Hitachi Virtual Storage Platform Hitachi Universal

Hitachi Virtual Storage Platform Hitachi Universal
Hitachi Virtual Storage Platform
Hitachi Universal Volume Manager User Guide
FASTFIND LINKS
Document Organization
Product Version
Getting Help
Contents
MK-90RD7033-12
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Microsoft product screen shots are reprinted with permission from Microsoft Corporation.
ii
Hitachi Virtual Storage Platform Hitachi Universal Volume Manager User Guide
Contents
Preface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .ix
Intended audience. . . . . . . . . . . . . . . . . . .
Product Version . . . . . . . . . . . . . . . . . . . .
Document revision level . . . . . . . . . . . . . . .
Changes in this revision . . . . . . . . . . . . . . .
Referenced documents. . . . . . . . . . . . . . . .
Document organization . . . . . . . . . . . . . . .
Document conventions. . . . . . . . . . . . . . . .
Convention for storage capacity values . . . .
Accessing product documentation . . . . . . . .
Getting help . . . . . . . . . . . . . . . . . . . . . . .
Comments . . . . . . . . . . . . . . . . . . . . . . . .
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. xi
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.xiii
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.xiv
.xiv
Overview. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1
Features—multiple systems, common management . . . . .
How Universal Volume Manager works . . . . . . . . . . . . . .
Typical components . . . . . . . . . . . . . . . . . . . . . . . . . . . .
External storage system . . . . . . . . . . . . . . . . . . . . . .
External volume . . . . . . . . . . . . . . . . . . . . . . . . . . .
Internal volume . . . . . . . . . . . . . . . . . . . . . . . . . . . .
License . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Interfaces . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Hitachi Storage Navigator . . . . . . . . . . . . . . . . . .
Hitachi Command Control Interface software (CCI) .
Spreadsheets . . . . . . . . . . . . . . . . . . . . . . . . . . .
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1-2
1-2
1-3
1-4
1-4
1-4
1-4
1-5
1-5
1-5
1-5
Requirements and planning. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1
Planning workflow . . . . . . . . . . . . . . . . . . . . . . . . .
System requirements . . . . . . . . . . . . . . . . . . . . . . .
Planning considerations for external storage systems
Application performance considerations . . . . . . . . . .
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Contents
Hitachi Virtual Storage Platform Hitachi Universal Volume Manager User Guide
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2-2
2-2
2-4
2-4
iii
Planning external volumes . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Cache use and external storage performance . . . . . . . . . . . . . .
Cache Mode effects with other Hitachi software . . . . . . . . . .
Mainframe volumes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Open systems volumes . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
External volume groups (ExGs) . . . . . . . . . . . . . . . . . . . . . . .
Capacity requirements for volumes . . . . . . . . . . . . . . . . . . . . .
LDEV capacities per emulation type. . . . . . . . . . . . . . . . . . .
Example: Determining capacity for OPEN-3 volume. . . . . . . .
Adjusting volume capacities for pairs . . . . . . . . . . . . . . . . . .
Planning external paths and path groups . . . . . . . . . . . . . . . . . . .
External paths. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Single path mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Multi path mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Supported external systems’ path mode for external volumes
External path configurations — direct and switch . . . . . . . . . . .
Default mapping settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
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VSP software supported for external volumes . . . . . . . . . . . . . . . . 3-1
Cache Residency Manager . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Copy-on-Write Snapshot . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Dynamic Provisioning, Dynamic Provisioning for Mainframe, Dynamic Tiering,
Dynamic Tiering for Mainframe, and Thin Image . . . . . . . . . . . . . . . . . . . .
Local replication software. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
LUN Manager and Configuration File Loader. . . . . . . . . . . . . . . . . . . . . . . . .
LUN Expansion . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Performance Monitor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Remote replication software . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
SNMP Agent . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Virtual LVI/LUN (VLL) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
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3-3
3-3
3-3
3-4
3-4
3-4
3-5
3-5
Setting up external volumes . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1
Setup workflow . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Setting up ports on the local system . . . . . . . . . . . . . .
Setting up ports on the external system . . . . . . . . . . .
Mapping an external volume . . . . . . . . . . . . . . . . . . .
Preparing mapped volumes for use . . . . . . . . . . . . . .
Using mapped volumes . . . . . . . . . . . . . . . . . . . . . . .
Recognizing the local system from the external system .
5
. 2-4
. 2-6
. 2-6
. 2-7
. 2-7
. 2-8
. 2-8
. 2-9
2-10
2-11
2-12
2-12
2-13
2-14
2-15
2-18
2-20
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. 4-2
. 4-2
. 4-4
. 4-5
4-11
4-12
4-12
Monitoring and maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-1
Monitoring external volumes and paths . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-2
Editing external volume policies (settings) . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-2
Editing mapping policies . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-3
iv
Contents
Hitachi Virtual Storage Platform Hitachi Universal Volume Manager User Guide
Changing external volume processor blade . . . . . . . . . . . . . . . . . .
Changing I/O system for external storage systems . . . . . . . . . . . . .
Editing external WWN settings . . . . . . . . . . . . . . . . . . . . . . . . . . .
Path maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Adding an external path to an existing path group . . . . . . . . . .
Changing external path priority . . . . . . . . . . . . . . . . . . . . . . .
Disconnecting an external path . . . . . . . . . . . . . . . . . . . . . . .
Reconnecting an external path . . . . . . . . . . . . . . . . . . . . . . . .
Changing the cache mode setting of the external volume . . . . .
Prerequisites . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Changing the cache mode . . . . . . . . . . . . . . . . . . . . . . . . .
Removing, replacing an external path . . . . . . . . . . . . . . . . . . .
Replacing all external paths . . . . . . . . . . . . . . . . . . . . . . . . . .
Disconnecting external systems and volumes . . . . . . . . . . . . . . . .
Prerequisite requirements. . . . . . . . . . . . . . . . . . . . . . . . . . . .
Disconnecting an external storage system, all mapped volumes
Disconnecting a single mapped volume . . . . . . . . . . . . . . . . . .
Reconnecting external systems and volumes . . . . . . . . . . . . . . . . .
Reconnecting an external storage system, all mapped volumes .
Reconnecting a single mapped volume . . . . . . . . . . . . . . . . . .
Deleting an external volume mapping . . . . . . . . . . . . . . . . . . . . . .
Powering off and on local, external storage systems . . . . . . . . . . .
Requirements for external storage system maintenance . . . . . .
Powering off and on the external storage system . . . . . . . . . . .
Powering off and on the local storage system . . . . . . . . . . . . . .
Powering off and on both storage systems . . . . . . . . . . . . . . . .
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. 5-4
. 5-5
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. 5-8
. 5-8
. 5-9
. 5-9
5-10
5-11
5-11
5-11
5-12
5-13
5-14
5-14
5-15
5-16
5-18
5-18
5-19
5-21
5-23
5-23
5-24
5-25
5-25
Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-1
Contacting the Hitachi Data Systems Support Center . . . . . . . . . . . . . . . . . . . 6-2
General troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-2
Troubleshooting external path status . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-4
Troubleshooting path errors for specific storage systems . . . . . . . . . . . . . . . . . 6-6
HUS VM, VSP G1000, Virtual Storage Platform, and Universal Storage Platform
V/VM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-7
Universal Storage Platform / TagmaStore NSC . . . . . . . . . . . . . . . . . . . . . 6-7
Lightning 9900 V . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-8
Lightning 9900 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-8
Thunder 9500V . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-9
HUS/AMS/WMS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-9
SVS200 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-10
Troubleshooting port and volume discovery problems . . . . . . . . . . . . . . . . . . 6-10
A
Supported external storage systems . . . . . . . . . . . . . . . . . . . . . . A-1
External systems . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-3
VSP G1000 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-3
Contents
Hitachi Virtual Storage Platform Hitachi Universal Volume Manager User Guide
v
HUS VM Storage System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Virtual Storage Platform . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Universal Storage Platform V/VM . . . . . . . . . . . . . . . . . . . . . . . . .
Universal Storage Platform/TagmaStore NSC . . . . . . . . . . . . . . . . .
Host mode option for a volume larger than 2 TB . . . . . . . . . . .
Lightning 9900 V . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Lightning 9900 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Thunder 9500V . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Identifying the 9500 V model using the serial number. . . . . . . .
Identifying the controller using the port WWN . . . . . . . . . . . . .
HUS/AMS/WMS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Identifying the HUS/AMS/WMS model using the serial number. .
Identifying the controller using the port WWN (HUS/AMS/WMS)
Identifying logical volumes using Characteristic1 . . . . . . . . . . .
Caution on using the power savings option . . . . . . . . . . . . . . .
AMS 2000 series guidelines . . . . . . . . . . . . . . . . . . . . . . . . . .
SVS200 storage system . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
EVA storage system. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Identifying logical volumes using Characteristic2 . . . . . . . . . . .
Sun StorEdge 6120/6320 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Sun StorageTek FlexLine 380 . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Sun StorageTek 2540 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Sun StorageTek V2X2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
EMC CLARiiON CX series . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
System option mode for connecting EMC CLARiiON CX series. . .
System parameters for connecting EMC CLARiiON CX series . . .
EMC VNX series. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
System option mode for connecting EMC VNX series . . . . . . . . .
System parameters for connecting EMC VNX series. . . . . . . . . .
EMC Symmetrix series . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
IBM DS3000/DS4000/DS5000 series . . . . . . . . . . . . . . . . . . . . . . .
IBM V7000 series . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
IBM SVC series . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
IBM XIV series . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Fujitsu FibreCAT CX series . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Fujitsu DX60/80/90 S2 and Fujitsu DX400 S2 . . . . . . . . . . . . . . . . .
SGI IS4600 series . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3Par T800, F400, V800, V400 series . . . . . . . . . . . . . . . . . . . . . . .
Storage system with a product name displayed as "(Generic)" . . . . .
Support conditions when product name displays as “(Generic)” .
Virtualization support requirements . . . . . . . . . . . . . . . . . . . . .
Suggested virtualization procedure . . . . . . . . . . . . . . . . . . . . .
B
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. A-3
. A-3
. A-3
. A-4
. A-4
. A-4
. A-4
. A-4
. A-5
. A-6
. A-6
. A-7
. A-8
. A-9
. A-9
. A-9
A-10
A-10
A-11
A-11
A-12
A-12
A-13
A-13
A-13
A-13
A-14
A-14
A-14
A-14
A-14
A-15
A-15
A-15
A-15
A-16
A-16
A-16
A-17
A-17
A-19
A-19
Remote command devices . . . . . . . . . . . . . . . . . . . . . . . . . . . . . B-1
Overview of remote command devices . . . . . . . . . . . . . . . . . . . . . . . . . . . . . B-2
Storage systems supported for remote command devices . . . . . . . . . . . . . . . . B-2
vi
Contents
Hitachi Virtual Storage Platform Hitachi Universal Volume Manager User Guide
Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . B-3
Restrictions and other information. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . B-4
Mapping a command device . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . B-4
C
Command Control Interface command reference . . . . . . . . . . . . . C-1
Storage Navigator Action names and CCI commands . . . . . . . . . . . . . . . . . . . C-2
D
Universal Volume Manager GUI reference . . . . . . . . . . . . . . . . . . D-1
External Storages window . . . . . . . . . . . . . . .
Selected external storage system window . . . .
Selected external path group window . . . . . . .
Add External Volumes wizard . . . . . . . . . . . . .
Select External Path Group window . . . . . .
Add External Volumes window . . . . . . . . .
Discovered External Volumes . . . . . . . .
Selected External Volumes . . . . . . . . . .
Confirm window . . . . . . . . . . . . . . . . . . .
Edit Policies window. . . . . . . . . . . . . . . . . . . .
Edit External Volumes wizard . . . . . . . . . . . . .
Edit External Volumes window . . . . . . . . .
Confirm window . . . . . . . . . . . . . . . . . . .
Edit External Path Configuration wizard . . . . . .
Edit External Path Configuration window . .
Confirm window . . . . . . . . . . . . . . . . . . .
Edit External WWNs wizard . . . . . . . . . . . . . .
Edit External WWNs window . . . . . . . . . . .
Confirm window . . . . . . . . . . . . . . . . . . .
Delete External Volumes wizard . . . . . . . . . . .
Delete External Volumes window. . . . . . . .
Confirm window . . . . . . . . . . . . . . . . . . .
Disconnect External Paths wizard . . . . . . . . . .
Disconnect External Paths window. . . . . . .
Confirm window . . . . . . . . . . . . . . . . . . .
Reconnect External Paths wizard. . . . . . . . . . .
Reconnect External Paths window . . . . . . .
Confirm window . . . . . . . . . . . . . . . . . . .
Discover External Target Ports window . . . . . .
Create External Path Group window . . . . . . . .
Change Settings window . . . . . . . . . . . . . . . .
View External LUN Properties window . . . . . . .
Reconnect External Storage Systems window . .
Reconnect External Volumes window . . . . . . . .
Disconnect External Storage Systems window .
Disconnect External Volumes window . . . . . . .
Assign Processor Blade wizard . . . . . . . . . . . .
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Contents
Hitachi Virtual Storage Platform Hitachi Universal Volume Manager User Guide
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. D-3
. D-5
. D-8
D-13
D-13
D-14
D-15
D-18
D-21
D-23
D-25
D-25
D-26
D-27
D-28
D-30
D-31
D-31
D-32
D-32
D-33
D-34
D-34
D-35
D-36
D-36
D-37
D-37
D-38
D-38
D-40
D-41
D-44
D-44
D-45
D-46
D-47
vii
Assign Processor Blade window . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . D-48
Confirm window . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . D-49
External LDEV Properties window . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . D-49
Glossary
Index
viii
Contents
Hitachi Virtual Storage Platform Hitachi Universal Volume Manager User Guide
Preface
This document describes and provides instructions for performing external
storage operations using the Universal Volume Manager software on the
Hitachi Virtual Storage Platform storage system.
Please read this document carefully to understand how to use this product
and keep a copy for reference.
This preface includes the following information:
□
Intended audience
□
Product Version
□
Document revision level
□
Changes in this revision
□
Referenced documents
□
Document organization
□
Document conventions
□
Convention for storage capacity values
□
Accessing product documentation
□
Getting help
□
Comments
Preface
Hitachi Virtual Storage Platform Hitachi Universal Volume Manager User Guide
ix
Intended audience
This document is intended for system administrators, Hitachi Data Systems
representatives, and authorized service providers who install, configure,
and operate Hitachi Virtual Storage Platform storage system.
Readers of this document should be familiar with the following:
•
Data processing and RAID storage systems and their basic functions.
•
The Hitachi Virtual Storage Platform storage system, and you should
have read the Hitachi Virtual Storage Platform User and Reference Guide
•
The Hitachi Storage Navigator software for the Hitachi Virtual Storage
Platform, and the Hitachi Storage Navigator User Guide.
•
The storage systems that are connected to the Hitachi Virtual Storage
Platform as external storage.
Product Version
This document revision applies to Hitachi VSP microcode 70-06-1x or later.
Document revision level
Revision
Date
Description
MK-90RD7033-00
October 2010
Initial release
MK-90RD7033-01
December 2010
Supersedes and replaces MK-90RD7033-00
MK-90RD7033-02
April 2011
Supersedes and replaces MK-90RD7033-01
MK-90RD7033-03
August 2011
Supersedes and replaces MK-90RD7033-02
MK-90RD7033-04
November 2011
Supersedes and replaces MK-90RD7033-03
MK-90RD7033-05
February 2012
Supersedes and replaces MK-90RD7033-04
MK-90RD7033-06
June 2012
Supersedes and replaces MK-90RD7033-05
MK-90RD7033-07
August 2012
Supersedes and replaces MK-90RD7033-06
MK-90RD7033-08
November 2012
Supersedes and replaces MK-90RD7033-07
MK-90RD7033-09
January 2013
Supersedes and replaces MK-90RD7033-08
MK-90RD7033-10
July 2013
Supersedes and replaces MK-90RD7033-09
MK-90RD7033-11
October 2013
Supersedes and replaces MK-90RD7033-10
MK-90RD7033-12
April 2014
Supersedes and replaces MK-90RD7033-11
Changes in this revision
•
x
Updates made to document support for RAID 800 connections. See Load
Balance Mode on page 2-16, HUS VM, VSP G1000, Virtual Storage
Platform, and Universal Storage Platform V/VM on page 6-7, VSP G1000
on page A-3, Storage systems supported for remote command devices
on page B-2, Mapping a command device on page B-4, Mapped Volumes
tab on page D-10, Discovered External Volumes on page D-15, Selected
External Volumes on page D-18, Confirm window on page D-21, Mapped
Preface
Hitachi Virtual Storage Platform Hitachi Universal Volume Manager User Guide
Volumes tab on page D-10, Discovered External Volumes on page D-15,
Selected External Volumes on page D-18, and Confirm window on page
D-21.
Referenced documents
Hitachi Virtual Storage Platform documentation:
•
Command Control Interface User and Reference Guide, MK-90RD7010
•
Hitachi Copy-on-Write Snapshot User Guide, MK-90RD7013
•
Hitachi Virtual Storage Platform Performance Guide, MK-90RD7020
•
Hitachi Virtual Storage Platform Provisioning Guide for Mainframe
Systems, MK-90RD7021
•
Hitachi Virtual Storage Platform Provisioning Guide for Open Systems,
MK-90RD7022
•
Hitachi ShadowImage® for Mainframe User Guide, MK-90RD7023
•
Hitachi ShadowImage® User Guide, MK-90RD7024
•
Hitachi Storage Navigator User Guide, MK-90RD7027
•
Hitachi Storage Navigator Messages, MK-90RD7028
•
Hitachi TrueCopy® User Guide, MK-90RD7029
•
Hitachi TrueCopy® for Mainframe User Guide, MK-90RD7030
•
Hitachi Universal Replicator User Guide, MK-90RD7031
•
Hitachi Universal Replicator for Mainframe User Guide, MK-90RD7032
•
Hitachi Virtual Storage Platform User and Reference Guide, MK90RD7042
Document organization
The following table provides an overview of the contents and organization
of this document. Click the chapter title in the left column to go to that
chapter. The first page of each chapter provides links to the sections in that
chapter.
Chapter
Description
Chapter 1, Overview
Provides an overview of Universal Volume Manager.
Chapter 2, Requirements and
planning
Provides system requirements and planning
information.
Chapter 3, VSP software
Provides interoperability information.
supported for external volumes
Chapter 4, Setting up external
volumes
Provides procedures for setting up Universal Volume
Manager.
Chapter 5, Monitoring and
maintenance
Provides information and procedures for monitoring
and maintaining Universal Volume Manager.
Chapter 6, Troubleshooting
Provides troubleshooting information.
Appendix A, Supported
external storage systems
Provides configuration information for connecting
external storage systems to the VSP storage system.
Preface
Hitachi Virtual Storage Platform Hitachi Universal Volume Manager User Guide
xi
Chapter
Description
Appendix B, Remote command Provides information for using remote command
devices
devices as command devices.
Appendix C, Command Control Provides CCI commands that correspond to Storage
Interface command reference Navigator operations.
Appendix D, Universal Volume
Manager GUI reference
Describes the Storage Navigator windows and dialog
boxes for Universal Volume Manager.
Document conventions
This document uses the following typographic conventions:
Convention
Description
Bold
Indicates text on a window or dialog box, including window and
dialog box names, menus, menu options, buttons, fields, and
labels. Example: Click OK.
Italic
Indicates a variable, which is a placeholder for actual text
provided by the user or system. Example: copy source-file
target-file
Note: Angled brackets (< >) are also used to indicate
variables.
screen/code
Indicates text that appears on screen or entered by the user.
Example: # pairdisplay -g oradb
< > angled brackets
Indicates a variable, which is a placeholder for actual text
provided by the user or system. Example: # pairdisplay -g
<group>
Note: Italic font is also used to indicate variables.
[ ] square brackets
Indicates optional values. Example: [ a | b ] indicates that you
can choose a, b, or nothing.
{ } braces
Indicates required or expected values. Example: { a | b }
indicates that you must choose either a or b.
| vertical bar
Indicates that you have a choice between two or more options
or arguments. Examples:
[ a | b ] indicates that you can choose a, b, or nothing.
{ a | b } indicates that you must choose either a or b.
This document uses the following icons to draw attention to information:
Icon
xii
Meaning
Description
Tip
Provides helpful information, guidelines, or suggestions for
performing tasks more effectively.
Note
Provides information that is essential to the completion of a
task.
Caution
Warns that failure to take or avoid a specified action can
result in adverse conditions or consequences (for example,
loss of access to data).
Preface
Hitachi Virtual Storage Platform Hitachi Universal Volume Manager User Guide
Icon
Meaning
WARNING
Description
Warns the user of severe conditions, consequences, or both
(for example, destructive operations).??Need icon.
Convention for storage capacity values
Physical storage capacity values (for example, disk drive capacity) are
calculated based on the following values:
Physical capacity unit
Value
1 KB
1,000 bytes
1 MB
1,0002 bytes
1 GB
1,0003 bytes
1 TB
1,0004 bytes
1 PB
1,0005 bytes
1 EB
1,0006 bytes
Logical storage capacity values (logical device capacity) are calculated
based on the following values:
Logical capacity unit
Value
1 KB
1,024 bytes
1 MB
1,024 KB or 1,0242 bytes
1 GB
1,024 MB or 1,0243 bytes
1 TB
1,024 GB or 1,0244 bytes
1 PB
1,024 TB or 1,0245 bytes
1 EB
1,024 PB or 1,0246 bytes
1 block
512 bytes
1 Cyl
For open systems:
•
OPEN-V: 960 KB
•
Other than OPEN-V: 720 KB
For mainframe systems: 870 KB
Accessing product documentation
The Hitachi Virtual Storage Platform user documentation is available on the
Hitachi Data Systems Support Portal: https://Portal.HDS.com. Please check
this site for the most current documentation, including important updates
that may have been made after the release of the product.
Preface
Hitachi Virtual Storage Platform Hitachi Universal Volume Manager User Guide
xiii
Getting help
If you need technical support, log on to the Hitachi Support Portal for
contact information: https://Portal.HDS.com.
Comments
Please send us your comments on this document:
doc.comments@hds.com. Include the document title, number, and revision.
Please refer to specific sections and paragraphs whenever possible.
Thank you! (All comments become the property of Hitachi Data Systems.)
xiv
Preface
Hitachi Virtual Storage Platform Hitachi Universal Volume Manager User Guide
1
Overview
With Hitachi Universal Volume Manager, you connect volumes in external
storage systems to Hitachi Virtual Storage Platform (VSP) and manage
them as if they were one system.
This guide provides information and instructions for planning, set up,
maintenance, and troubleshooting the use of external volumes with VSP
and its software products.
□
Features—multiple systems, common management
□
How Universal Volume Manager works
□
Typical components
Overview
Hitachi Virtual Storage Platform Hitachi Universal Volume Manager User Guide
1–1
Features—multiple systems, common management
When a system consists of multiple storage systems, a host must usually
be connected to all of the systems. When a system administrator configures
the connections from the host to volumes, he or she follows different
instructions for each of the storage systems.
With Universal Volume Manager, the administrator configures the
connection from the host to the VSP storage system, then can manipulate
mapped volumes in an external storage system in the same way as volumes
in the VSP storage system.
Operations between storage systems can also involve different procedures.
But with Universal Volume Manager, you perform them with the same
Hitachi software as when you use VSP systems.
For example, you will use the desired Hitachi replication program for copy
operations between VSP and the external systems, including the following:
•
Copying data from a volume in VSP to a volume in the external system.
•
Copying data from a volume in an external system to a volume in
another external system.
How Universal Volume Manager works
A volume in an external storage system becomes an internal volume in VSP
when you map to it.
1–2
•
A local system port must be connected to the external storage system
port with a fibre cable. This route between ports is the "external path".
•
The external volume is represented in the VSP as an internal volume,
and the path between them is the “mapping path”.
•
The figure below shows the connection between the local and external
storage systems. In this figure, the external system is connected to the
local system’s “external ports” via a switch using the Fibre-Channel
interface. An “external port” is an attribute assigned to VSP ports.
Overview
Hitachi Virtual Storage Platform Hitachi Universal Volume Manager User Guide
Multiple external storage systems can be connected to one external port.
You can add an additional external storage system even when the external
port is already in use.
Note: Mapped external volumes must be accessed and copied only by
hosts that are connected to the VSP, not by hosts connected to the external
systems.
Logical devices (LDEVs) are created during or after the mapping operation.
If created after mapping, the LDEVs are created in the same way they are
when you create normal internal volumes using Virtual LVI/Virtual LUN. As
shown in the figure, LDEVs in mapped external volumes are required for use
in the local system.
Typical components
Universal Volume Manager consists of the following components:
•
A VSP storage system, referred to as the “local storage system”
•
Universal Volume Manager license
•
An external storage system
•
An external volume mapped to the local system. In the local system, the
mapped external volume is referred to as an “internal volume”, and is a
virtual representation of the external volume.
•
LDEVs (logical devices).
•
Hitachi Storage Navigator, Hitachi Command Control Interface software,
and/or Hitachi Command Line Interface
•
External path
Overview
Hitachi Virtual Storage Platform Hitachi Universal Volume Manager User Guide
1–3
•
Mapping path
These components are illustrated in the following figure, and discussed in
more detail below.
External storage system
VSP can connect to other Hitachi storage systems, original equipment
manufacturer (OEM) systems, and other vendors' systems (such as IBM or
EMC). Hosts recognize volumes in these other systems as “internal
volumes” of the VSP.
External volume
A volume in the external storage system that is mapped to the local storage
system.
Internal volume
A volume managed by the local storage system. An internal volume can be
a physical volume or the virtual representation of an external volume.
License
Universal Volume Manager is a Hitachi software product requiring
installation of a license key. See the Hitachi Storage Navigator User Guide
for instructions.
1–4
Overview
Hitachi Virtual Storage Platform Hitachi Universal Volume Manager User Guide
Interfaces
You can perform Universal Volume Manager operations using the following
interfaces:
•
Storage Navigator
•
Command Control Interface
•
Spreadsheets
Hitachi Storage Navigator
The Hitachi graphical user interface used to manage the VSP system and the
connected external storage volumes. Storage Navigator is run from a
browser on the user-supplied computer. The operations described in this
document are performed using Storage Navigator.
Hitachi Command Control Interface software (CCI)
CCI provides a command line interface to perform most of the same
operations as Storage Navigator. CCI operations are issued directly from the
host, and can be automated using scripts. External volumes can be used as
remote command devices.
Spreadsheets
With spreadsheets, you can schedule and perform the following Universal
Volume Manager operations.
•
Map external volumes with multiple or single LDEVs to the local system
•
Retrieve information about mapped external volumes
•
Retrieve information about external volume groups configured to the
local system
•
Retrieve information about all SSIDs in the local system
•
Disconnect and reconnect an external volume or an external storage
system
•
Delete external volume mapping
•
Move an external volumes from one path group to another existing
group or to a new group.
See System Operations Using Spreadsheets for complete information.
Overview
Hitachi Virtual Storage Platform Hitachi Universal Volume Manager User Guide
1–5
1–6
Overview
Hitachi Virtual Storage Platform Hitachi Universal Volume Manager User Guide
2
Requirements and planning
This topic describes requirements and planning.
□
Planning workflow
□
System requirements
□
Planning considerations for external storage systems
□
Application performance considerations
□
Planning external volumes
□
Planning external paths and path groups
□
Default mapping settings
Requirements and planning
Hitachi Virtual Storage Platform Hitachi Universal Volume Manager User Guide
2–1
Planning workflow
Before mapping an external volume to VSP, review the information in this
chapter to make sure that you understand the Universal Volume Manager
requirements and implementation procedures.
Use the general order in the following to prepare for Universal Volume
Manager:
•
Review System requirements on page 2-2.
•
Ensure that the external system whose volumes you want to map is
supported by Universal Volume Manager. See Supported external
storage systems on page A-1.
•
Ensure the functionality you want is supported for mapped external
volumes. See VSP software supported for external volumes on page 3-1.
•
In the external system, select a port and set any necessary parameters.
See Setting up ports on the external system on page 4-4.
•
In the local system, identify the port that will connect to the external
system and make sure it is specified as an “external port”. See Setting
up ports on the local system on page 4-2.
•
Plan data paths from the local to the external system. See Planning
external paths and path groups on page 2-12.
•
In the external system, prepare volumes for use in the local system. For
example, if you plan to use an external volume for replication, make
sure it matches the Hitachi replication software’s requirements.
See the following for this and other considerations.
Planning external volumes on page 2-4
Mainframe volumes on page 2-7
Open systems volumes on page 2-7
Capacity requirements for volumes on page 2-8
•
In the local storage system, configure external volume groups to which
you will assign the external volume during the mapping operation. See
External volume groups (ExGs) on page 2-8.
•
You can change the defaults for some mapping settings before
performing the operation. See Editing external volume policies
(settings) on page 5-2.
System requirements
Universal Volume Manager (UVM) operations are performed between the
local storage system—VSP—and volumes in an external storage system.
General requirements for these and all UVM components are described
below.
Item
Description
Virtual Storage Platform •
(VSP)
•
2–2
Required for the UVM local storage system.
All hardware and microcode levels must be installed.
Requirements and planning
Hitachi Virtual Storage Platform Hitachi Universal Volume Manager User Guide
Item
Description
External storage
systems
One is required, multiple external systems are supported per
VSP. See Supported external storage systems on page A-1 for
related details about each supported external storage
system.
UVM license key
Required. See the Hitachi Storage Navigator User Guide for
installation and operations instructions.
Other VSP software
licenses
As needed. See VSP software supported for external volumes
on page 3-1 for VSP software and functions that can be used
with external volumes.
Storage Navigator
Required.
RAID level
External volumes are reported as RAID 1 in the following
displays:
•
VSP internal processing. (A bar (-) displays on the
Storage Navigator windows.)
•
Information about the external storage system that is
reported to a higher-level device (OS).
Internally, VSP uses RAID 1 cache management for external
volumes. The external storage controller is responsible for
physical RAID methods.
Ports in external storage •
system
•
Maximum = 1,024 ports can be connected with VSP.
No. of mapped ext. vols. •
Maximum = 63,232
(WWN is used as a port identification number)
•
Maximum per port = 4,096
•
For Thin Image, Copy-on-Write Snapshot and Dynamic
Provisioning:
Number of external volumes + Number of virtual
volumes ≤ 63,232
No. of ext. vol. groups
Maximum = 16,384
No. of vols. registered in Maximum = 4,096
ext. vol. group
No. of mapping paths
•
One required
•
Two or more recommended
•
Maximum = 8 per external volume
Minimum capacity of an The minimum capacity of an internal volume changes
internal volume
depending on the emulation type. See LDEV capacities per
emulation type on page 2-9.
Minimum capacity of an 77,760 blocks (about 38 MB).
ext. vol.
However, when the emulation type is OPEN-V, the minimum
capacity is 96,000 blocks (about 47 MB).
Maximum capacity of an •
ext. vol.
•
•
59.99TB (128,849,011,200 blocks)
You can use a volume with more than 59.99TB, but you
can only access 59.99TB as a mapped external volume.
Use Virtual LVI/Virtual LUN to create multiple LDEVs of
OPEN-V up to the maximum LDEV size of 3.99 TB each.
Requirements and planning
Hitachi Virtual Storage Platform Hitachi Universal Volume Manager User Guide
2–3
Planning considerations for external storage systems
An external storage system’s performance is affected by local system
operations; conversely, performance of the host and local system are
affected by the attributes assigned to the external system.
Note the following regarding performance:
•
Host I/O performance (sequential write performance only) to mapped
volumes can be improved by setting SOM 872 to ON. For more
information, call the Hitachi Data Systems Support Center.
•
The performance and status of the external system affect read/write
performance of the mapped external volume. A heavy load on the
external system slows the processing speed of read/write operations. In
this case, I/O from a mainframe host may receive a Missing Interrupt
error.
•
If the host connected to the local storage system issues numerous I/O
to be processed by the external storage system, the commands from the
host may time out.
•
When you execute VSP software commands that result in more I/O
processed than the external storage system can handle, the commands
could time out and an error may occur.
•
When you manipulate an external volume from the host, check the Path
Blockade Watch time for the external volume. If the value for this setting
is longer than the timeout period of the host command, the host
command may time out when the power supply is off or when an error
occurs in the external storage system. If host I/O is a significant
concern, make sure that the Path Blockade Watch time of the external
volume is the same as or shorter than the timeout period of the host
command.
Application performance considerations
Performance requirements for an application can be met when using
external storage, but note the following considerations in this regard:
•
Internal storage typically provides faster response times than external
storage when the storage is of the same type.
•
Storage used by the application must have the proper performance
characteristics.
For example, SATA type storage does not provide the performance
requirements usually needed for an OLTP application.
•
The mainframe Transaction Processing Facility (TPF) should not use
external storage.
Planning external volumes
External volumes must be set up to match Universal Volume Manager
requirements. Note the following:
•
2–4
You can use pre-existing data in an external volume after it is mapped
to the local system, with the following restrictions:
Requirements and planning
Hitachi Virtual Storage Platform Hitachi Universal Volume Manager User Guide
Emulation type must be set to OPEN-V when you map the volume.
To perform host I/O operations, an LU path from the Target port to
the mapped volume must be set.
•
An external volume’s maximum or minimum available capacity depends
on the emulation type you specify when mapping the volume.
See Capacity requirements for volumes on page 2-8 for more
information.
•
You cannot access data stored in an external volume beyond the allowed
maximum capacity. See “Maximum capacity of an external volume” in
System requirements on page 2-2.
•
You cannot map an external volume whose capacity is smaller than the
minimum capacity required for internal volumes.
•
Make sure that a mapped external volume is accessed only from the
local VSP storage system.
Make sure that a mapped external volume is not accessed from a
host that is connected to the external storage system.
Make sure that a mapped external volume is not manipulated by a
copy function or any other functions of the external storage system.
Accessing a mapped external volume from the external storage
system requires that the volume mapping be disconnected first.
•
External volumes that are reserved by a host cannot be mapped as
internal volumes. To map these volumes, cancel the reserve settings,
remove host access to the volumes, and then perform the mapping
operation.
•
Do not map multi-platform volumes of external storage systems as
internal volumes.
•
When an external storage system that uses control unit path ownership
is connected to VSP, configure the external path to the primary controller
in the external storage system as the primary path.
Ownership is the exclusive right to control volumes. A controller that has
ownership is called a primary controller. If the external path is connected
to a controller that does not have ownership, and the path is configured
as primary path, the ownership will be transferred, which may affect
performance.
•
A management LU cannot be used as an external volume.
A management LU receives commands from an application; it controls
or manages the application, and stores control information from the
application. An example of a management LU is a Universal Xport LU. (A
CCI command device is not a management LU.)
Before performing the external volume mapping operation, perform one
of the following operations on the external storage system.
Delete the management LU from the port to be connected to the VSP.
Make sure that at least one LU is used for data storage and has a
smaller LUN (LU number) than the management LU’s LUN. Also make
sure that the data storage LU is set to the port connected to VSP.
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Hitachi Virtual Storage Platform Hitachi Universal Volume Manager User Guide
2–5
Use the security function and configure the access attribute of the
management LU to prohibit read and write operations.
An external storage system that has a management LU might not be
recognized by the local storage system.
Cache use and external storage performance
Performance for external storage used with VSP is highly dependent on
proper cache configuration. The Cache Mode setting, which you specify
during the mapping operation, affects external storage performance.
When data is written to the mapped external volume, Cache Mode controls
when the write-complete response is sent to the host,
•
When Enabled is specified, the write-complete response is sent when the
write data is in VSP cache.
•
When Disabled is specified, the write-complete response is sent when
the write data is accepted by the external system.
Disabled is the safest setting and is recommended when there is a
possibility that the I/O rate will exceed the short term capabilities of the
external storage.
Enabled can adversely impact overall VSP performance if the I/O rate
exceeds the performance capabilities of the external system. If you specify
Enabled, you should use the same formula for sizing cache in both the
internal and external systems.
A cache partition should be defined when Enabled is used for the Cache
Mode setting. A CLPR helps to protect overall VSP performance when the I/
O rate tends to exceed the capabilities of the external system.
Cache Mode effects with other Hitachi software
Note the following additional effects regarding the Cache Mode setting:
2–6
•
If you perform the Cache Residency Manager bind mode operation on an
external volume, Cache Mode is set to Enabled. In this case, twice as
much cache capacity as user data area capacity is required for the
operation. (Bind mode is unavailable when UVM Cache Mode is set to
Disable.)
•
The external volumes in a LUSE must all use the same Cache Mode
setting, either Enabled or Disabled.
•
The external volumes in a Dynamic Provisioning pool must all use the
same Cache Mode setting, either Enabled or Disabled.
•
Dynamic Tiering pool volumes require Cache Mode to be set to Enabled.
•
Data that is not written by the host (for example, data written by
ShadowImage) is asynchronously destaged to the external storage
system regardless of the Cache Mode setting.
•
When you set emulation type for a mainframe system, note the
following:
Requirements and planning
Hitachi Virtual Storage Platform Hitachi Universal Volume Manager User Guide
Data written by a host using a Format Write command is
asynchronously destaged to the external storage system regardless
of the Cache Mode setting.
Data written by a host using other Write commands are destaged to
the external storage system as configured in the Cache Mode setting.
Mainframe volumes
Note the following requirements and considerations for mapping mainframe
external volumes:
•
Make sure that mainframe external volumes on a mainframe operating
system consist of at least one LDEV before mapping.
•
When multiple LDEVs exist in an external volume and numerous I/Os are
made to them, read/write commands may timeout. When the
commands timeout, the SIM (21D2xx) is reported.
•
Set the MIH (missing interrupt handler) timer to 45 seconds (which is
the recommended value) for mainframe external volumes on a
mainframe operating system.
•
Pre-existing mainframe volumes on an external system that are
accessed by FICON channels cannot be mapped to the local storage
system because VSP does not recognize these volumes
You can prepare mainframe external volumes for mapping using one of
the following methods:
Zero-format the external volumes on the external system, map the
volumes to VSP, then perform the Write to Control Blocks operation
using Virtual LVI/Virtual LUN on the local system side.
Map the external volumes to VSP, and then format the mapped
volumes on the local storage system using the Virtual LVI/Virtual
LUN.
Note:
The following relates to mapped volumes:
•
After the mapping operation, the status of the mapped volume
becomes Blockade; however, after the Write to Control Blocks
operation is performed or mapped volume is formatted on the local
system, the mainframe host can then access the new mainframe
volume through the local VSP system's FICON channels.
•
If you format the mapped volume from the external system, existing
data is deleted and there are no options for retaining it. This is the
reason for formatting from the local system side, as mentioned
above.
For information on formatting and the Write to Control Blocks
operations, see the Provisioning Guide for Mainframe Systems.
Open systems volumes
Note the following requirements and considerations for mapping OPEN
systems external volumes:
Requirements and planning
Hitachi Virtual Storage Platform Hitachi Universal Volume Manager User Guide
2–7
•
OPEN systems external volumes do not require reformatting because
the connection between VSP and the external system is Fibre Channel.
However, if you need to initialize the data area for the volume, format
the volume using the Virtual LUN function. See the Provisioning Guide
for Open Systems for instructions.
•
OPEN-V emulation provides the most efficient use of storage and the
best performance. Also, emulation types other than OPEN-V may not
retain existing data after being mapped.
External volume groups (ExGs)
During the mapping operation, you assign the external volume to an
external volume group. This allows you to organize external volumes used
for similar purposes a group or groups.
For example, you may want to assign mapped volumes in the same external
system to a specific ExG. Or, you may assign volumes used in a particular
function, such as ShadowImage or Universal Replicator, to an ExG, even if
the data is stored in different external storage systems.
You could also use ExGs to correspond to the external system’s physical disk
grouping, such as a RAID group.
You assign external volume group numbers during the mapping procedure.
Capacity requirements for volumes
An external volume's capacity is carved into LDEVs when mapped to the
local system as an internal volume. This topic provides information and
instructions for calculating the capacity that the internal volume will have.
Note the following regarding internal/external volume capacity:
•
The LDEV size in the internal volume varies according to the external
system’s emulation type.
•
An external volume whose capacity is less than the minimum LDEV
capacity cannot be used.
•
An external volume can be used whose capacity is less than the base
LDEV capacity for the emulation type; this causes a custom-sized
volume (CV) to be automatically created in the local system during
mapping.
A custom volume in the local system has a minimum capacity, called
minimum LDEV capacity.
Base LDEV capacity must equal or be greater than the minimum
LDEV capacity.
The following figure illustrates minimum and base LDEV capacities.
2–8
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Hitachi Virtual Storage Platform Hitachi Universal Volume Manager User Guide
Figure 2-1 Idea of LDEV capacity
•
An external volume whose capacity is more than the base LDEV capacity
for the emulation type results in multiple LDEVs created when the
volume is mapped. These LDEVs will have the base LDEV capacity.
•
When using VLL, a maximum 2,048 CVs can be created.
(VLL is not supported for the OPEN-L emulation type.)
•
For emulation types other than OPEN-V, usable capacity in the internal
volume is the capacity of the external volume minus control information
area capacity.
•
Data above the maximum capacity cannot be accessed.
LDEV capacities per emulation type
The following table shows LDEV capacities for each emulation type in units
of blocks and cylinders.
Emulation
Type
Minimum Data Area
Capacity
Blocks
Cylinders
Base Data Area Capacity
Blocks
Cylinders
Control Information
Area Capacity
Blocks
Cylinders
Mainframe
3380-3
72,000
50
4,808,160
3,339
10,080
7
3380-3A
72,000
50
4,808,160
3,339
10,080
7
3380-3B
72,000
50
4,808,160
3,339
10,080
7
3380-3C
72,000
50
4,808,160
3,339
10,080
7
3390-3
87,000
50
5,809,860
3,339
10,440
6
3390-3A
87,000
50
5,809,860
3,339
10,440
6
3390-3B
87,000
50
5,809,860
3,339
10,440
6
3390-3C
87,000
50
5,809,860
3,339
10,440
6
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Hitachi Virtual Storage Platform Hitachi Universal Volume Manager User Guide
2–9
Minimum Data Area
Capacity
Emulation
Type
Blocks
Cylinders
Base Data Area Capacity
Blocks
Control Information
Area Capacity
Cylinders
Blocks
Cylinders
3390-3R
87,000
50
5,809,860
3,339
10,440
6
3390-9
87,000
50
17,429,580
10,017
43,500
25
3390-9A
87,000
50
17,429,580
10,017
43,500
25
3390-9B
87,000
50
17,429,580
10,017
43,500
25
3390-9C
87,000
50
17,429,580
10,017
43,500
25
3390-L
87,000
50
57,002,400
32,760
40,020
23
3390-LA
87,000
50
57,002,400
32,760
40,020
23
3390-LB
87,000
50
57,002,400
32,760
40,020
23
3390-LC
87,000
50
57,002,400
32,760
40,020
23
3390-M
87,000
50
114,004,800
65,520
92,220
53
3390-MA
87,000
50
114,004,800
65,520
92,220
53
3390-MB
87,000
50
114,004,800
65,520
92,220
53
3390-MC
87,000
50
114,004,800
65,520
92,220
53
3390-A
1,936,620
1,113
457,042,320
262,668
12,180
7
3390-V
87,000
50
1,944,902,400
1,117,760
-
-
OPEN-3
72,000
-
4,806,720
-
11,520
-
OPEN-8
72,000
-
14,351,040
-
38,880
-
OPEN-9
72,000
-
14,423,040
-
38,880
-
OPEN-E
72,000
-
28,452,960
-
27,360
-
OPEN-L
71,192,160
-
71,192,160
-
10,080
-
OPEN-V
96,000
-
8,589,934,592
-
-
-
OPEN
•
For mainframe emulation types, LDEV capacity is an integer when converted to cylinders.
•
For 3380 mainframe volumes, 1 cylinder = 1,440 blocks
•
For 3390 mainframe volumes, 1 cylinder = 1,740 blocks
•
3390-A requires a control information area every 1,113 cylinders.
•
For OPEN-L, CVs cannot be created. Therefore, the base data area capacity and minimum data area
capacity are the same.
•
For OPEN-V:
- The maximum capacity of LDEVs is listed as the base data area capacity.
- The capacity of the external volume is equal to the capacity of the internal volume, when 4 TB or
less. This is because there is no control information area capacity.
•
For OPEN emulation types other than OPEN-V, LDEV capacity is divisible by 1,440 blocks.
Example: Determining capacity for OPEN-3 volume
The following figure illustrates capacity for an external volume with OPEN3 emulation type. The capacity is 1,610,612,640 blocks. Using the data for
OPEN-3 in LDEV capacities per emulation type on page 2-9, 334 LDEVS can
be created from the base LDEV capacity of 4,818,240 blocks (Base Data
Area plus Control Information Area).
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Hitachi Virtual Storage Platform Hitachi Universal Volume Manager User Guide
This results in 1,320,480 blocks of the mapped external volume becoming
free space. LDEVs can be created in free space using VLL.
Adjusting volume capacities for pairs
Mapped external volumes can be used for replication. All VSP replication
software requires a pair’s secondary volume (S-VOL) to have the same
capacity as the primary volume (P-VOL).
If you need to adjust the capacity of the VSP volume or the external volume
before creating the pair, proceed as shown in the following subtopics.
Decreasing the size of the VSP S-VOL
When the VSP volume S-VOL is larger than the mapped external volume PVOL, adjust the VSP volume’s capacity as follows:
1. Map the external volume with emulation type OPEN-V.
2. Make sure the VSP volume’s emulation type is OPEN-V.
3. Decrease the size of the VSP S-VOL by creating a custom volume (CV)
using Virtual LVI/Virtual LUN, as shown in the following figure.
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2–11
Base the CV capacity on Blocks, which displays in the Capacity column
on the LDEV Information dialog box in Storage Navigator. See the
Provisioning Guide for Open Systems and the Provisioning Guide for
Mainframe Systems for instructions on creating CVs.
4. Create the pair.
Decreasing the size of the external volume S-VOL
When the mapped external volume S-VOL is larger than the VSP P-VOL,
adjust the external volume’s capacity as follows:
1. Map the external volume with the same emulation type as the VSP
primary volume.
2. After mapping, check the new internal volume’s capacity. If it is larger
than the VSP P-VOL, decrease the size by creating a CV that is the same
size as the VSP P-VOL using Virtual LVI/Virtual LUN (see the following
figure).
3. Create the pair.
Planning external paths and path groups
The external path is the physical link from the local storage system port to
the external storage system port. You prepare the ports on the local and
external systems and then set up the external path prior to mapping your
external volumes.
To prepare and set up ports, see the following sections:
•
Setting up ports on the local system on page 4-2
•
Setting up ports on the external system on page 4-4
External paths
A path consists of cables and possibly switches. You configure your path
according to bandwidth considerations, which include distance, speed, and
performance requirements.
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Because workload can spike and cable or switch failures can occur, Hitachi
strongly recommends that you set up redundant external paths. A
maximum of eight paths can be used per mapped external volume. Multiple
paths—redundancy—allows you to perform I/O operations with external
volumes regardless of workload and/or path failure.
With multiple paths, the external storage system determines how they are
used: some systems use one primary path with alternates available as
backups (Single path mode); other systems allow all paths to be used at the
same time, distributing I/O among them (Multi path mode). The path
storage system’s mode cannot be changed. With both modes, you place the
paths in path groups and prioritize each path.
Single path mode
For Single path mode, the external path with the highest priority (primary
path) is used to execute I/O to the external volume. If the primary path
cannot be used, it is switched to an alternative path, after a 3-minute
period.
The following figure illustrates how failure is handled with redundant paths
in Single path mode.
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Hitachi Virtual Storage Platform Hitachi Universal Volume Manager User Guide
2–13
When you restore a path with higher priority than the currently-used path,
I/O is switched to the restored path.
Multi path mode
For Multi path mode, all paths are used for I/O to the external volume. This
distributes workload in a round-robin process.
The following figure illustrates how failure is handled with redundant paths
in Multi mode.
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Hitachi Virtual Storage Platform Hitachi Universal Volume Manager User Guide
Note:
When you restore a path, use of the restored path is resumed.
Supported external systems’ path mode for external volumes
“Single” or “Multi” path mode displays in Storage Navigator for external
volumes on the External Path Group window. Path modes are based on
the external storage system and cannot be changed.
In APLB mode, all paths that are defined are used. I/O operation for external
volumes is performed through load balancing with the use of several paths
(round-robin control). External paths connected to ports in Passive status
are not used.
Requirements and planning
Hitachi Virtual Storage Platform Hitachi Universal Volume Manager User Guide
2–15
Load Balance Mode
When the path mode of an external volume is Multi or APLB, you can select
an I/O control system for the external storage system.
•
Normal Round-robin: Normal multi-path I/O control system. This
distributes I/O to several paths on which I/O operation is enabled for the
external storage system. This mode is applied to external volumes
mapped before 70-04-XX-XX/XX. Specify this if Extended Round-robin
may lower I/O performance. This mode is recommended when the
number of sequential I/O operations is small.
•
Extended Round-robin: Extended multi-path I/O control system. I/O
is distributed to several paths on which I/O operation is enabled for the
external storage system. For sequential I/O, the external volume is
divided into sections at regular intervals. In this case, the same path is
used for I/O within the same section which reduces the frequency of I/
O distribution. Read speed can be improved by using the cache function
of the external storage system for sequential I/O operations. This mode
is recommended when the number of sequential I/O operations is large.
•
Disable: I/O operation is performed with only one path that is normal
and has the highest priority. The same operation applies as that for
Single path mode. When Disable is set for Load Balance Mode, load
distribution is not performed. This mode is not recommended.
Caution: Depending on the external storage type and system
configuration, performance may not be improved when Extended Roundrobin is set. In that case, Normal Round-robin is recommended.
The following table shows the path mode for many of the supported external
storage systems. The table also shows the abbreviation used in Storage
Navigator.
If your system is not shown below, refer to http://www.hds.com/products/
storage-systems/specifications/supported-external-storage.html.
Storage System
Reference
Hitachi Virtual
Storage Platform
G1000
•
Path Mode: Multi
•
Displays as "VSP G1000".
Hitachi Virtual
Storage Platform
•
Path Mode: Multi
•
Displays as "VSP".
Hitachi Universal
Storage Platform V
•
Path Mode: Multi
•
Displays as "USP V".
Hitachi Universal
Storage Platform VM
•
Path Mode: Multi
•
Displays as "USP VM".
Hitachi TagmaStore® •
Universal Storage
•
Platform
Hitachi TagmaStore® •
Universal Storage
•
Platform
2–16
Path Mode: Multi
Displayed "USP".
Path Mode: Multi
Displays as "NSC".
Requirements and planning
Hitachi Virtual Storage Platform Hitachi Universal Volume Manager User Guide
Storage System
Reference
Hitachi Unified
Storage
•
Path Mode: Multi
•
Displays as "HUS".
Hitachi Adaptable
Modular Storage
•
Path Mode:
- Multi: AMS2500, AMS2300, AMS2100, or AMS2010
- Single: AMS1000, AMS500, or AMS200
•
Displays as "AMS".
Hitachi Workgroup
Modular Storage
•
Path Mode: Single
•
Displays as "WMS".
Hitachi Simple
Modular Storage
•
Path Mode: Multi
•
Displays as "SMS".
Hitachi Lightning
9900 V Series
•
Path Mode: Multi
•
Displays as "9970V" and "9980V".
Hitachi Lightning
9900
•
Path Mode: Multi
•
Displays as:
- Lightning 9960: "0400".
- Lightning 9910: "0401".
Hitachi Thunder
9500V series
•
Path Mode: Single
•
Displays as "9500V".
Hitachi SANRISE
Universal Storage
Platform
•
Path Mode: Multi
•
Displays as "USP".
Hitachi SANRISE
Network Storage
Controller
•
Path Mode: Multi
•
Displays as "NSC".
Hitachi SANRISE
9900V series
•
Path Mode: Multi
•
Displays as "9970V" and "9980V".
Hitachi SANRISE
9500V series
•
Path Mode: Single
•
Displays as "9500V".
Hitachi SANRISE
2000 series
•
Path Mode: Multi
•
Displays as:
- SANRISE 2800: "0400".
- SANRISE 2200: "0401".
HP Virtual Storage
Platform VX7
•
Path Mode: Multi
•
Displays as "XP7".
HP Virtual Storage
Platform VP9500
•
Path Mode: Multi
•
Displays as "P9500".
A/H-6593
•
Path Mode: Multi
•
Displays as "300".
•
Path Mode: Multi
•
Displays as "24000".
HP H24000
HP H20000
•
Path Mode: Multi
•
Displays as "20000".
Requirements and planning
Hitachi Virtual Storage Platform Hitachi Universal Volume Manager User Guide
2–17
Storage System
Reference
HP SANRISE H12000 •
•
HP SANRISE H10000 •
Path Mode: Multi
Displays as "12000".
Path Mode: Multi
•
Displays as "10000".
HP SANRISE H1024/
H128
•
Path Mode: Multi
•
Displays as "1024" and "128".
HP SANRISE H512/
H48
•
Path Mode: Multi
•
Displays as "512" and "48".
HP SANRISE H256
•
Path Mode: Multi
•
Displays as "256".
•
Path Mode: Multi
•
Displays as "XP7".
•
Path Mode: Multi
•
Displays as "P9500".
HP XP7
HP StorageWorks
P9500
HP XP24000
HP XP20000
HP XP12000
HP XP10000
HP XP1024/XP128
HP XP512/XP48
•
Path Mode: Multi
•
Displays as "24000".
•
Path Mode: Multi
•
Displays as "20000".
•
Path Mode: Multi
•
Displays as "12000".
•
Path Mode: Multi
•
Displays as "10000".
•
Path Mode: Multi
•
Displays as "1024" and "128".
•
Path Mode: Multi
•
Displays as "512" and "48".
•
Path Mode: Multi
•
Displays as "256".
HP StorageWorks
Enterprise Virtual
Array 3000/4000/
5000/6000/8000
•
Path Mode: Single
•
Displays as "EVA".
SVS200
•
Path Mode: Multi
•
Displays as "SVS200".
HP XP256
External path configurations — direct and switch
This topic provides recommendations for setting up direct and switch
external path configurations.
2–18
Requirements and planning
Hitachi Virtual Storage Platform Hitachi Universal Volume Manager User Guide
Direct connection
The following figure shows redundant paths in a direct connection
configuration. External storage system ports, "WWN A" and "WWN B", are
connected to the local system ports, "CL1-A" and "CL2-A" (which are
specified as external ports). For greater redundancy, Path 2, the alternate
path, uses ports of a different cluster in both the local and external storage
systems.
Switch connection
The following figure shows redundant paths with switches. Ports in the local
system are connected to ports in the external system through the switch.
The paths use ports of different clusters for increased redundancy.
Requirements and planning
Hitachi Virtual Storage Platform Hitachi Universal Volume Manager User Guide
2–19
Default mapping settings
Mapped volumes have default values that you can use or change before (or
after) mapping.
See Editing external volume policies (settings) on page 5-2 to review the
settings and edit them if desired.
2–20
Requirements and planning
Hitachi Virtual Storage Platform Hitachi Universal Volume Manager User Guide
3
VSP software supported for external
volumes
You will use VSP software products and functionality to manage and
manipulate data in your mapped volumes: for example, Virtual LVI/Virtual
LUN, TrueCopy, LUN Manager, and so on.
This topic provides requirements and restrictions for the Hitachi software
supported with external volumes.
□
Cache Residency Manager
□
Copy-on-Write Snapshot
□
Dynamic Provisioning, Dynamic Provisioning for Mainframe, Dynamic
Tiering, Dynamic Tiering for Mainframe, and Thin Image
□
Local replication software
□
LUN Manager and Configuration File Loader
□
LUN Expansion
□
Performance Monitor
□
Remote replication software
□
SNMP Agent
□
Virtual LVI/LUN (VLL)
VSP software supported for external volumes
Hitachi Virtual Storage Platform Hitachi Universal Volume Manager User Guide
3–1
Cache Residency Manager
Review the following when using external volumes with Cache Residency
Manager:
•
If you set bind mode, a cache of twice as much capacity as the user data
area of the mapped volume is required for the Cache Residency Manager
operation.
•
Bind mode cannot be specified for an external volume if the Cache
Mode is set to Disable You can specify the Cache Mode setting before,
during, or after mapping. See Editing external volume policies (settings)
on page 5-2 for more information.
Copy-on-Write Snapshot
Mapped volumes can be used in pairs for Copy-on-Write Snapshot, with the
following restrictions:
•
Both internal and external volumes cannot be used together in the same
pool.
•
All external volumes in a pool must use the same Cache Mode setting.
After mapping and formatting an external volume, it is ready to use as a
pair volume. The following figure shows an example of an external volume
used as a Pool-Vol.
3–2
VSP software supported for external volumes
Hitachi Virtual Storage Platform Hitachi Universal Volume Manager User Guide
Dynamic Provisioning, Dynamic Provisioning for
Mainframe, Dynamic Tiering, Dynamic Tiering for
Mainframe, and Thin Image
Mapped external volumes can be used as pool volumes for Dynamic
Provisioning, Dynamic Provisioning for Mainframe, Dynamic Tiering,
Dynamic Tiering for Mainframe, and Thin Image.
•
A mapped volume that is used as a pool volume must use OPEN-V
emulation for open systems and 3390-V emulation for mainframe
systems.
•
All external volumes in the same pool must use the same Cache Mode
setting. For more information about this setting, see Cache use and
external storage performance on page 2-6.
•
With Dynamic Tiering, the Cache Mode setting must be Enabled.
Local replication software
Mapped volumes can be used in pairs for ShadowImage and ShadowImage
for Mainframe.
After mapping and formatting an external volume, it is ready to use as a
pair volume. The following figure shows an example of an external volume
used as an S-VOL (R-VOL in an SIz pair).
LUN Manager and Configuration File Loader
Use LUN Manager to set the LU path for the mapped volume with OPEN
systems emulation types.
VSP software supported for external volumes
Hitachi Virtual Storage Platform Hitachi Universal Volume Manager User Guide
3–3
Some LUN Manager operations can be performed using spreadsheets and
the Configuration File Loader function. When using external volumes, you
can use Configuration File Loader for the following operations:
•
Set the LU path definition for an external volume (add, delete, or change
LU paths).
•
Set an external volume as a command device (add or delete the setting).
•
Setting the channel adapter (CHA) mode, host group, and WWN for the
external port is not supported. When an external volume is mapped
through an external port, the port setting operation of the topology is
not available.
LUN Expansion
External volumes can be used in a LUSE volume with the following
restrictions:
•
An internal volume in the local storage system and a mapped external
volume cannot be combined to form a LUSE volume.
•
Only LDEVs from the same external storage system can be used in a
LUSE volume. Do not combine LDEVs of multiple external storage
systems to create a LUSE volume, otherwise the following occurs:
When one external volumes is lower performing than others, it
affects the performance of the LUSE volume.
If an external volume that is part of a LUSE volume is blocked, the
data reliability of the LUSE volume deteriorates because the LUSE
volume has both accessible areas and inaccessible areas from a host.
If an external volume in a LUSE volume is disconnected or
reconnected, all external volumes in the LUSE volume must be
disconnected or reconnected at the same time.
•
All external volumes in a LUSE volume must use the same Cache Mode
setting. For more information about this setting, see Cache use and
external storage performance on page 2-6.
Performance Monitor
Performance Monitor can be used to display monitoring information for
mapped external volumes.
Remote replication software
Mapped external volumes can be used with the following remote replication
software:
3–4
•
TrueCopy
•
TrueCopy for Mainframe
•
Universal Replicator
•
Universal Replicator for Mainframe
VSP software supported for external volumes
Hitachi Virtual Storage Platform Hitachi Universal Volume Manager User Guide
After mapping and formatting an external volume, it is ready to use as a
pair volume. The following figures show examples of an external volume
used as an S-VOL (T-VOL in a TCz pair).
Figure 3-1 UR and URz example using a mapped external volume
Figure 3-2 TC and TCz example using a mapped external volume
SNMP Agent
Information about both the mapped external volume and the External port
can be displayed by SNMP Agent.
Virtual LVI/LUN (VLL)
For mainframe external volumes, use the Virtual LVI function to format or
to perform the Write to Control Blocks operation immediately after
mapping. See the Provisioning Guide for Mainframe Systems for
information.
VSP software supported for external volumes
Hitachi Virtual Storage Platform Hitachi Universal Volume Manager User Guide
3–5
If you create LDEVs from an external volume using the Virtual LVI or Virtual
LUN function, the Cache Mode setting of the created LDEVs is the same as
the mapped external volume.
3–6
VSP software supported for external volumes
Hitachi Virtual Storage Platform Hitachi Universal Volume Manager User Guide
4
Setting up external volumes
You set up ports and external paths, map the external volume, then begin
using it with native storage on the VSP. This topic provides setup procedures
and information.
□
Setup workflow
□
Setting up ports on the local system
□
Setting up ports on the external system
□
Mapping an external volume
□
Preparing mapped volumes for use
□
Using mapped volumes
□
Recognizing the local system from the external system
Setting up external volumes
Hitachi Virtual Storage Platform Hitachi Universal Volume Manager User Guide
4–1
Setup workflow
When you begin setting up Universal Volume Manager, all planning tasks
and considerations should be completed. Consult the topics in Planning
workflow on page 2-2 to review.
Set up external volumes as follows:
1. Set up ports on the local and external storage systems. See the
following:
Setting up ports on the local system on page 4-2
Setting up ports on the external system on page 4-4
2. To edit certain mapping settings prior to the mapping operation, see
Editing external volume policies (settings) on page 5-2. Otherwise, you
can make changes during the operation or accept the default settings.
3. Map the external volume to the VSP.
See Mapping an external volume on page 4-5.
4. When the external volume is successfully mapped, perform the one of
the following based on the volume’s emulation type:
For mainframe emulations, format the volume or perform the Write
to Control Blocks operation using Virtual LVI. See the Provisioning
Guide for Mainframe Systems.
For OPEN-system emulation, define LU paths to a host using LUN
Manager. See the Provisioning Guide for Open Systems.
See Also:
Recognizing the local system from the external system on page 4-12.
Setting up ports on the local system
A port on the VSP must connect with the port on the external system via
the external path. The VSP port must be specified as an “External” port. This
topic provides instructions for changing the Fibre Channel port attribute to
“External”.
Prerequisites
•
Before changing the port’s attribute, release LU paths that may be
assigned to the port.
•
Ports with RCU target and Initiator attributes can be changed to
External, but ensure that they are no longer used for remote copy.
•
For more information about setting up the external path, see Planning
external paths and path groups on page 2-12.
To set a port attribute to external
1. In the Storage Navigator Storage Systems tree, click the Ports/Host
Groups link.
2. In the Ports/Host Groups window, select the Ports tab.
4–2
Setting up external volumes
Hitachi Virtual Storage Platform Hitachi Universal Volume Manager User Guide
3. On the Ports tab, select the desired port row.
Setting up external volumes
Hitachi Virtual Storage Platform Hitachi Universal Volume Manager User Guide
4–3
4. On the menu bar, click Actions, Ports/Host Groups, and then Edit
Ports.
5. On the Edit Ports window, select External in the Port Attribute box.
6. For help with other settings, see the Provisioning Guide for Mainframe
Systems or Provisioning Guide for Open Systems.
7. When ready, click Finish.
8. In the Confirm window, check all settings, accept or enter a new task
name, and then click Apply.
Setting up ports on the external system
Make sure the external system ports you use can handle the read and write
workload planned for the external volumes. See the discussion in External
paths on page 2-12 for more information.
The following are general steps for setting up external-system ports. Refer
to the documentation for the external system for full information.
1. Set the topology information according to the configuration of the
connection (fabric or loop).
2. Set the data transfer speed according to the connection configuration.
3. Set parameters for the ports on the external system as required for
connecting with VSP. For your specific external system, see Supported
external storage systems on page A-1.
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Hitachi Virtual Storage Platform Hitachi Universal Volume Manager User Guide
If you do not find your external system in the section, see http://
www.hds.com/products/storage-systems/specifications/supportedexternal-storage.html to make sure your system is supported, then refer
to the documentation for the system’s ports.
4. Define LUNs and present them on the port on the external system.
Mapping an external volume
After setting the attribute of the port used for Universal Volume Manager to
the external port, you can map the external volume as an internal volume.
Prerequisite information
•
Attributes set for the external volume before mapping, such as port
security, LUN security, Volume Retention Manager attributes, and so on
are discarded when the external volume is mapped. If the original
attributes are required, reset them in the local storage system after
mapping.
•
When the external volume is a command device, it is mapped as a
remote command device. For important information about mapping
command devices, see Remote command devices on page B-1.
•
Before you map the external volume, check whether any application is
using the volume. If so, stop the application before mapping.
For example, if mapping a command device, make sure CCI commands
are not being executed during the mapping operation.
Note: When you create an LDEV at the same time that you map an
external volume, you cannot select the following LDEV numbers:
•
Numbers already in use.
•
Numbers already assigned to another emulation group (grouped every
32 LDEV numbers).
•
Numbers not assigned to the user.
For emulation groups, see Provisioning Guide for Open Systems or
Provisioning Guide for Mainframe Systems. To determine whether the LDEV
number can be assigned, click the View LDEV IDs button in the Add
External Volumes window when you map the external volume.
To map an external volume
1. In Storage Navigator, select Add External Volumes from the General
Tasks menu.
2. In the Add External Volumes window, add the external volume by
clicking either By New External Path Group or By Existing External
Path Group.
Setting up external volumes
Hitachi Virtual Storage Platform Hitachi Universal Volume Manager User Guide
4–5
To add the external volume By New External Path Group:
a. Click Create External Path Group.
b. In the Create External Path Group window, enter the following:
4–6
Setting up external volumes
Hitachi Virtual Storage Platform Hitachi Universal Volume Manager User Guide
— Initial External Path Group ID. The storage system searches
IDs from the initial ID you specify in ascending order and allocates
an ID that can be used. The range can be from 0 to 63,231. 0 is the
default.
— External Paths. If you do not see the port or WWN you want
in the Available External Paths box, click Discover External
Target Ports. In the new window, select the desired ports and click
Add, then click OK.
— External Storage System. If the external system is not
selected, scroll down the list and select it.
— Available External Paths. Select the desired port IDs and click
Add, then click OK.
c. Set the priority for a path by selecting it and clicking Raise
Priority or Lower Priority.
d. Click OK.
To add the external volume By Existing External Path Group:
a. Click By Existing External Path Group.
Setting up external volumes
Hitachi Virtual Storage Platform Hitachi Universal Volume Manager User Guide
4–7
b. If you have not identified the external storage system that you
want to connect the external path to, click the storage system button
and select the system.
c. In the Available External Paths list, select the desired path
group. Path groups consist of the external paths previously set up
and prioritized.
d. Click Next.
3. In the Add External Volumes window’s Discovered External
Volumes box, select the desired external volumes.
4. In Initial Parity Group ID, enter an external volume group number
and sequential number. A group allows you to place similar external
volumes in a group; for example, volumes used for a copy function.
The range is from 1 - 1 to 16384 - 4096.
5. In Allow Simultaneous Creation of LDEVs, select Yes to allow the
system to automatically create LDEVs in the external volume, otherwise
select No.
If the external volume is a command device, select Yes in both Allow
Simultaneous Creation of LDEVs and Use External Storage
System Configuration.
6. In Use External Storage System Configuration, select Yes to use
the external storage system’s configuration when the local system
create LDEVs (if Allow Simultaneous Creation of LDEVs is also Yes).
Otherwise, select No.
If you select Yes, an LDEV whose emulation type is OPEN-V and has
the same capacity as the external volume is created (maximum
capacity of an OPEN-V LDEV is 4 TB).
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Setting up external volumes
Hitachi Virtual Storage Platform Hitachi Universal Volume Manager User Guide
If you select No, the Options list expands. You must select an
Emulation Type when you select No.
If the external volume is a command device, select Yes in both Allow
Simultaneous Creation of LDEVs and Use External Storage
System Configuration.
7. In LDEV Name, enter the prefix character and the initial number.
The entire value can be a maximum of 32 characters including the initial
number (numerical value of 9 digits or less), or blank. Blank is displayed
by default. Note the following numbering rule:
1:total 9 numbers (1,2,3,…9)
08:total 92 numbers (08,09,10,…99)
23:total 77 numbers (23,24,25,…99)
098:total 902 numbers (098,099,100…999)
8. Click Options (if not already expanded). If you have previously edited
mapping settings (policies), you may not want to change the options.
However, review the following steps—since some fields in Options are
affected by preceding steps.
9. In the expanded Options box, for Initial LDEV ID enter the initial LDEV
ID for the external volume. The local storage system searches from this
number in ascending order and allocates the next available ID. You can
review used, available, and disabled LDEVS by clicking View LDEV IDs.
For LDKC, enter 00.
For CU, enter the CU number, which can from 00 to FE. 00 is the
default.
Setting up external volumes
Hitachi Virtual Storage Platform Hitachi Universal Volume Manager User Guide
4–9
For DEV, enter the LDEV ID, which can be from 00 to FF. 00 is the
default.
For Interval, enter an interval between LDEV IDs, which can be from
0 to 255. 0 is the default.
10.In Initial SSID, enter the SSID, which can be from 0004 to FFFE. 0004
is the default.
You can review the current SSIDs by clicking View SSIDs.
11.In Base Emulation Type, select the emulation type of the external
volume.
If you selected Yes in Allow Simultaneous Creation of LDEVs and
No in Use External Storage System Configuration, you must select
an emulation type. If you selected Yes in both fields, Base Emulation
Type is greyed out, and OPEN-V is automatically set.
12.In Number of LDEVs per External Volume, enter the number of
LDEVs to be created when the volume is mapped. This field is greyed out
if you selected Yes in Allow Simultaneous Creation of LDEVs and
Use External Storage System Configuration, and 1 displays (since
OPEN-V is the emulation type). See Capacity requirements for volumes
on page 2-8 for more information.
13.In Cache Partition, select the CLPR for accessing the mapped external
volume.
Note: For more information about the Cache Partition, Cache
Mode, and Inflow Control settings, see Editing external volume
policies (settings) on page 5-2.
14.In Cache Mode, click Enable to propagate write data asynchronously
from cache to the external storage system. Click Disable to propagate
data synchronously.
If you specify Disable, the Cache Residency Manager bind mode
cannot be set.
When the external volume is a command device, Cache Mode for
the remote command device is automatically set to Disable
regardless of your setting.
Data that is not written by the host (for example, data written by pair
operation) is asynchronously destaged to the external storage
system regardless of the Cache Mode setting.
15.In Inflow Control, click Enable to limit or prevent write data from
being written to cache memory when the write operation to the external
volume cannot be performed. Click Disable to allow write data to be
written to cache.
16.In Processor Blade, select the processor blade for the external volume.
Processor blade assignment should evenly distribute work across the
available processors.
The range is from MPB0 to MPB7. The value depends on the
configuration of the device.
4–10
Setting up external volumes
Hitachi Virtual Storage Platform Hitachi Universal Volume Manager User Guide
Select Auto (the default) to cause a processor blade to be automatically
assigned by the system. If Auto cannot be selected, the processor blade
with the lowest number is selected by default.
17.Click Add.
18.If you need to change the added volume’s settings, in the Selected
External Volumes list click the volume, click Change Settings, make
necessary changes, and click OK.
19.To to add LUN paths, click Next in the Add External Volumes window.
See the Provisioning Guide for Open Systems for information.
20.Click Finish when ready.
21.In the Confirm window, check all settings, accept or enter a new task
name, and then click Apply.
Preparing mapped volumes for use
After your external volume is mapped to the local storage system, proceed
as follows:
To prepare mapped volumes for use
1. Based on emulation type, perform one of the following:
For mainframe emulation, the status of the mapped volume becomes
Blockade after mapping. Format the volume using Virtual LVI to
change to a normal status.
For zero-formatted external volumes, use Virtual LVI to perform the
Write to Control Blocks operation to restore the volume. Even if
you formatted the volume from the external storage side after
recovering the mapped volume, you must perform the Write to
Control Blocks operation of the VLL feature after the formatting.
For instructions, see the Provisioning Guide for Mainframe Systems.
For open-system emulation, the status of the mapped volume
automatically becomes Normal. If you need to initialize the data
area of the mapped volume, format the volume using Virtual LUN.
2. For both emulation types, set an LU path from a Target port to the
internal volume, as shown in the following figure.
The LU path enables host I/O to the mapped volume.
Setting up external volumes
Hitachi Virtual Storage Platform Hitachi Universal Volume Manager User Guide
4–11
Using mapped volumes
When external volumes are mapped and ready for use, you can perform the
operations supported by Universal Volume Manager. Review supported
software products and operations in VSP software supported for external
volumes on page 3-1.
Note: A mapped external volume can be accessed only from the local
system. Do not access the volume from a host connected to the external
storage system.
Also, do not use external storage system functions to access the mapped
external volume, including copy functions.
Recognizing the local system from the external system
Though the local and external systems are connected, the external system
may not recognize the local system. If desired, you can try to make this
happen by performing the Discover External Target Ports operation. See
Adding an external path to an existing path group on page 5-8 for
instructions. If the path does not become mapped after 15 minutes, though,
the external system might not be able to recognize the local system.
4–12
Setting up external volumes
Hitachi Virtual Storage Platform Hitachi Universal Volume Manager User Guide
5
Monitoring and maintenance
This topic provides monitoring, editing, and maintenance instructions for
external volumes, paths, and systems.
□
Monitoring external volumes and paths
□
Editing external volume policies (settings)
□
Changing external volume processor blade
□
Changing I/O system for external storage systems
□
Editing external WWN settings
□
Path maintenance
□
Disconnecting external systems and volumes
□
Reconnecting external systems and volumes
□
Deleting an external volume mapping
□
Powering off and on local, external storage systems
Monitoring and maintenance
Hitachi Virtual Storage Platform Hitachi Universal Volume Manager User Guide
5–1
Monitoring external volumes and paths
You can view system details about mapped external volumes, the ports
used, and the external paths.
To view mapped external volumes and paths
1. In Storage Navigator, click External Storages in the Storage Systems
tree.
2. Select an external storage system.
3. Select a path group.
4. Select the Mapped Volumes tab.
5. Select an external volume row. Click View External LUN Properties at
the bottom of the window.
Editing external volume policies (settings)
When you map new external volumes, preset mapping policies are used.
You can change default mapping values without affecting settings in
previously mapped volumes.
To reset the values for previously mapped volumes, go to the Edit External
Volumes window and change settings volume by volume.
The settings and their functions are described in the following bullets. To
skip to the procedure, see Editing mapping policies on page 5-3.
•
Base Emulation Type
Specify OPEN-V to use existing data in the external volume from VSP.
If you use an emulation type other than OPEN-V, the volume requires
a specific area for management data. This results in a volume
capacity after mapping that is less than the actual external volume
capacity.
See Capacity requirements for volumes on page 2-8 for more
information about capacity and calculating the capacity of your
external volume.
•
Cache Mode. I/O to and from the local storage system always uses
cache. Write operations are always backed up in duplex cache. The
Cache Mode setting specifies whether write data from the host is
written to the external volume asynchronously (Enable) or
synchronously (Disable).
If Enable is specified: After receiving the data into the local system’s
cache memory, the system signals the host that the I/O operation
has completed and then asynchronously destages the data to the
external volume.
When Disable is specified (the default): After synchronously writing
the data to the external volume, the local system signals the host
that an I/O operation has completed.
For further discussion, see Cache use and external storage performance
on page 2-6.
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•
Cache Partition. Cache memory can be partitioned using Virtual
Partition Manager to configure a cache logical partition (CLPR) for the
mapped volumes. Cache logical partitions are often used to limit cacheuse by accessing slower external storage volumes.
Hitachi strongly recommends that you place external storage array
groups in a CLPR other than CLPR0. See the Hitachi Virtual Partition
Manager User Guide for detailed information on CLPR.
•
Inflow Control. When the write operation to the external volume
cannot be completed, Inflow Control specifies whether the write
operation to cache memory is limited (Enable) or continued (Disable).
If Enable is specified, the write operation to cache is limited and I/
O from the host is not accepted. Limiting the write operation
prevents the accumulation of data that cannot destage to cache
memory.
When Disable (the default) is specified, I/O from the host during the
retry operation is written to cache memory. When write operations
to the external volume are again possible, data in cache memory is
written to the external volume (all data is destaged).
•
Load Balance Mode. When the Path mode is Multi or APLB, select
Normal Round-robin, Extended Round-robin, or Disable as a Load
Balance Mode for the external storage system. By default, Normal
Round-robin is used. However, when the product name of the storage
system is displayed as “generic”, Disable is used by default.
Normal Round-robin: I/O is distributed to several paths on which
I/O operation is enabled for the external storage system.
Extended Round-robin: I/O is distributed to several paths on
which I/O operation is enabled for the external storage system. For
sequential I/O, the external volume is divided into sections at regular
intervals. In this case, the same path is used for I/O within the same
section which reduces the frequency of I/O distribution.
Disable: As in Single mode, I/O operation is performed using the
path that has the highest priority of all paths on which I/O operation
is enabled for the external storage system.
Editing mapping policies
1. In Storage Navigator, click External Storages in the Storage Systems
tree.
2. In the External Storages window, select the row for an external
storage system.
3. At the bottom of the window, click More Actions > Edit Policies.
4. In the Edit Policies window, use the information in the previous
sections to enter new settings.
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Note: You can also edit Cache Mode and Inflow Control for
individual external volumes. In Storage Navigator, select an external
volume in the Mapped Volumes tab. Then click Edit External
Volumes.
5. Click Apply.
Changing external volume processor blade
To change the processor blade
1. In Storage Navigator, click External Storages in the Storage Systems
tree.
2. In the External Storages window, select the desired external storage
system.
3. In the window for the selected external storage system, select a path
group.
4. In the window for the selected path group, select the external volume
whose processor blade you want to change.
5. At the bottom of the window, click More Actions > Assign MP Blade.
6. In the Assign Processor Blade window, select the desired processor
blade.
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The current setting for the external volume displays, unless you have
selected multiple external volumes with different values. Then the field
is blank.
The choices you see are dependent on the configuration of the device.
They range from MPB0 to MPB7.
Note: Processor blade assignment should be set to evenly distribute
work across all the available processors.
Selecting Auto allows the system to assign the blade.
7. Click Finish.
8. In the Confirm window, check settings, accept or enter a new task
name, and then click Apply.
Changing I/O system for external storage systems
With Load Balance Mode settings, you can change the I/O system for
external storage systems for each of the external volumes.
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This section describes operations to change the Load Balance Mode of
external volumes in the Edit External Volumes window. For more
information, see Load Balance Mode on page 2-16.
Note: To change the Load Balance Mode, the path mode of the external
volume must be either Multi or APLB.
To change the Load Balance Mode for each external volume:
1. Click External Storages in the Storage Systems.
The list of available external storage systems appears in the tree.
2. In the tree, select an external storage system.
The path groups corresponding to the external storage system appear.
3. Select a path group.
4. Select the Mapped Volumes tab.
5. Select an external volume.
6. In the menu bar, click Actions > External Storage > Edit External
Volumes.
The Edit External Volumes window opens.
7. In Load Balance Mode, select Extended Round-robin, Normal
Round-robin, or Disable.
8. Click Finish to display the Confirm window displays.
9. Confirm the settings and enter the task name in the Task Name box.
10.In the Confirm window, click Apply.
Editing external WWN settings
You can change the external system’s WWN port setting. However, note the
following:
•
If the current setting is error-free, it is best to continue using it.
•
For an external volume with normal I/O, set I/O Timeout from 5 - 15
seconds.
•
Use the external system’s recommended values for other port settings.
To edit the WWN port setting
1. In Storage Navigator, click External Storages in the Storage Systems
tree.
2. In the External Storages window, select the External Paths tab.
3. In the External Path window, select the row for the external path whose
external WWN you want to change.
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4. At the bottom of the window, click Edit External WWNs.
5. In the Edit External WWNs window, change the desired settings.
Note: The current values for the external WWN display unless you
have selected multiple paths with different values. Then the fields are
blank.
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QDepth. Enter the number of Read/Write commands that can be
issued (queued) to the external volume at one time. The number can
range from 2 to 128.
I/O Timeout. Enter the number of seconds that should pass before
I/O to the external volume times out. The range is 5 to 240
(seconds).
Path Blockade Watch. Enter a time that should elapse from the
time when the connection to the external volume goes down to the
time when the external volume is blocked. Commands from the host
are accepted until Path Blockade Watch passes, then the status of the
external volume and all paths to that volume becomes Blockade. The
range is from 5 to 180 (seconds).
6. Click Finish.
7. In the Confirm window, check settings, accept or enter a new task
name, and then click Apply.
Path maintenance
You can add external paths to a path group, change a path’s priority,
disconnect and reconnect paths (which must be performed before removing
or replacing paths), remove or replace a path, or replace all paths. The
following topics provide instructions.
•
Adding an external path to an existing path group on page 5-8
•
Changing external path priority on page 5-9
•
Disconnecting an external path on page 5-9
•
Reconnecting an external path on page 5-10
•
Removing, replacing an external path on page 5-12
•
Replacing all external paths on page 5-13
Adding an external path to an existing path group
1. In Storage Navigator, click External Storages in the Storage Systems
tree.
2. In the External Storages window, select an external storage system.
3. In the window for the external system, click the External Path Groups
tab and then select a path group row.
4. Click Edit External Path Configuration at the bottom of the window.
5. In the Edit External Path Configuration window, select an external
path or paths from the Available External Paths list and click Add.
If the External Storage System or the External WWN that you want
is not available in the dialog box, click Discover External Target Ports
and add the port that connects to the WWN.
6. To change the priority of external paths, click Raise Priority or Lower
Priority in the Selected External Paths list.
7. Click Finish.
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8. In the Confirm window, check settings, accept or enter a new task
name, and then click Apply.
Changing external path priority
You can change the priority of your primary and alternate external paths,
moving them higher or lower depending on your requirements. See External
paths on page 2-12 for more information on path priorities for Single and
Multi mode.
To change current path priority
1. In Storage Navigator, click External Storages in the Storage Systems
tree.
2. In the External Storages window, select an external storage system.
3. In the window for your external system, click the External Path
Groups tab and then select a path group row.
4. Click Edit External Path Configuration at the bottom of the window.
5. In the Edit External Path Configuration window, in the Selected
External Paths list, select the desired path and click Raise Priority or
Lower Priority.
6. Repeat the previous step to continue moving the path higher or lower.
Move other paths as needed.
7. Click Finish.
8. In the Confirm window, check settings, accept or enter a new task
name, and then click Apply.
Disconnecting an external path
You can disconnect all external paths connected either to a port on the local
system or to a WWN on the external system. Disconnecting paths affects
the external volumes mapped using the port.
An external path is disconnected for the following reasons:
•
Before removing a path.
•
To replace a path or switch
•
To perform maintenance on a path
•
To perform maintenance on the external system or volume
Prerequisite information
•
When you disconnect a path, make certain that alternate paths are
available for mapped external volumes using the path.
To disconnect an external path
1. In Storage Navigator, click External Storages in the Storage Systems
tree.
2. In the External Storages window, select the External Paths tab.
3. Select a path group row, then click Disconnect External Paths at the
bottom of the window.
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4. In the Disconnect External Paths window, select one of the following
(illustrated in the figure below:
By Ports to disconnect all external paths connected to the specified
port in the local storage system.
By External WWNs to disconnect all external paths connected to
the specified WWNs (ports) in the external storage system.
5. Click Finish.
6. In the Confirm window, check settings, accept or enter a new task
name, and then click Apply.
Reconnecting an external path
You can reconnect an external path that was disconnected. You reconnect
paths either to a port on the local system or to a WWN on the external
system. When you reconnect, original path settings are resumed.
Prerequisite information
•
Make sure the path is in a status that can be restored.
To reconnect an external path to an external volume
1. In Storage Navigator, click External Storages in the Storage Systems
tree.
2. In the External Storages window, select the External Paths tab.
3. Select a path row, then click Reconnect External Paths at the bottom
of the window.
4. In the Reconnect External Paths window, select one of the following:
By Ports to reconnect all external paths connected to the specified
port in the local storage system.
By External WWNs to reconnect all external paths connected to the
specified WWNs (ports) in the external storage system.
5. Click Finish.
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6. In the Confirm window, check settings, accept or enter a new task
name, and then click Apply.
Changing the cache mode setting of the external volume
You can change the cache mode of the external volume in the Edit External
Volumes window.
Prerequisites
Before changing the cache mode of the external volume, check each item
listed in the following table.
Item to Check
Description
Cache mode and LUSE
volumes
If an external volume is a part of a LUSE volume, the cache
mode setting should be the same among all volumes that
constitute a LUSE volume.
Cache Residency
Manager and cache
mode
When the bind mode is set, you cannot change the cache
mode from Enable to Disable. To change the cache mode to
Disable, cancel the setting for Cache Residency Manager or
change the cache residency mode to the priority mode.
Cache mode and pool
volumes
When a volume is registered to a pool as a pool volume, the
cache mode setting should be the same among all the pool
volumes in the pool.
Cache mode and remote When the volume is a remote command device, you cannot
command devices
change the cache mode from Disable to Enable.
Nondisruptive Migration The cache mode of external volume whose attribute is set to
Attribute
nondisruptive migration cannot be changed.
Changing the cache mode
To change the cache mode setting
1. Click External Storage in the Storage Systems tree.
The list of available external storage systems appear in the tree.
2. In the tree, select an external storage system.
The path groups corresponding to the external storage system appear.
3. Select a path group.
4. Select the Mapped Volumes tab.
5. Select an external volume.
6. In the menu bar, click Actions >External Storage > Edit External
Volumes. The Edit External Volumes window opens.
7. Select Enable or Disable in Cache Mode.
8. Click Finish to display the Confirm window.
9. Confirm the settings and enter the task name in the Task Name box.
10.In the Confirm window, click Apply.
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Removing, replacing an external path
You can remove a path so it is no longer available to the external volume.
You remove a path to replace it with another external path or to perform
maintenance on the physical link.
Note: All external paths must be removed before detaching a channel
adaptor, otherwise the channel adaptor cannot be detached.
Prerequisite information
•
Before removing a path, make sure it is disconnected. See
Disconnecting an external path on page 5-9 for instructions.
To remove an external path
1. In Storage Navigator, click External Storages in the Storage Systems
tree.
2. In the External Storages window, select an external system.
3. In the window for the external system, select a path group row.
4. Click Edit External Path Configuration at the bottom of the window.
5. In the Edit External Path Configuration window, in the Selected
External Paths list, select the path to be removed and click Remove.
The external path is deleted from the Selected External Paths list.
6. Click Finish.
7. In the Confirm window, check settings, accept or enter a new task
name, and then click Apply.
If you are replacing the path, see Adding an external path to an existing
path group on page 5-8.
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Replacing all external paths
You can replace the primary and alternate paths used by an external
volume. Doing this requires one path to remain in Normal status at all
times, which is shown in the following figure.
To replace the external paths for an external volume
1. This procedure uses the illustration above.
Disconnect external path A. See Disconnecting an external path on
page 5-9.
2. Disconnect the cable for external path A, then remove it. See
Removing, replacing an external path on page 5-12.
3. Make sure the cable for external path C is connected, and then add this
path to an existing path group. See Adding an external path to an
existing path group on page 5-8.
When external path C status is Normal, then both external path B
and external path C are set, and you can replace the next path.
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4. Disconnect external path B.
5. Disconnect the cable for external path B, then remove it.
6. Make sure the cable for external path D is connected, and then add this
path to an existing path group.
When external path D status is Normal, then both external path C
and external path D are set. The paths have all been replaced.
Disconnecting external systems and volumes
You can disconnect a single mapped external volume, or all the mapped
volumes in an external system. You disconnect all volumes by disconnecting
the system itself.
You disconnect a volume or system in order to perform the following
operations:
•
Turn off the power supply of the local or external storage system
•
Delete an external volume’s mapping
•
Access a mapped external volume or volumes from the external storage
system
When you disconnect a volume or volumes, they stop accepting host I/O,
and all data in cache is written to the volumes (data is destaged). Also, the
mapping settings are preserved. When the volumes are reconnected, they
are assigned the same settings.
Prerequisite requirements
Before disconnecting volumes or systems, processes must be resolved or
stopped, as described in the following table.
Activity in the external
volume
Required operation
I/O to the external volume
Stop I/O to the volume and un-mount the volume from
from the open system host is the host.
in progress.
Host I/O is forcibly stopped if you disconnect when I/O
is in progress.
The external volume is online Stop the host I/Os to the volume and perform the Vary
from the mainframe host.
Offline operation.
The external volume includes Delete the pair.
LDEVs used in a copy pair*
You can disconnect without deleting a ShadowImage or
ShadowImage for Mainframe pair when pair status is
PSUE or Suspend/SUSPER.
The external volume includes Change pair status to PAIR.
LDEVs registered to a Copyon-Write Snapshot data pool.
The external volume includes Delete the Thin Image data pool.
LDEVs registered to a Thin
Image data pool.
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Activity in the external
volume
Required operation
The external volume includes Perform the following operations on DP-VOLs associated
LDEVs registered to a
with the external volume:
Dynamic Provisioning pool
• Stop using the DP-VOLs.
volume (DP-VOL).
• Block the DP-VOLs using Virtual LVI/Virtual LUN.
The external volume includes Delete the migration plans.
LDEVs for which Volume
Migration processing is in
progress.
* Copy software products are: ShadowImage, ShadowImage for Mainframe, Universal
Replicator, Universal Replicator for Mainframe, TrueCopy, TrueCopy for Mainframe, Thin
Image, and Copy-on-Write Snapshot.
Disconnecting an external storage system, all mapped volumes
When you disconnect an external system, the mapped external volumes in
the system are also disconnected. This is the primary method for
disconnecting all the mapped volumes in an external system.
Before disconnecting a mapped volume, review Prerequisite requirements
on page 5-14.
To disconnect an external system and its mapped volumes
1. In Storage Navigator, click External Storages in the Storage Systems
tree.
2. In the External Storages window, select the row for the external
storage system to be disconnected.
3. Click Disconnect External Storage Systems at the bottom of the
window.
4. In the Disconnect External Storage Systems window, review the
volumes that will be disconnected, then click Apply.
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5. In the Confirm window, click Apply again.
When you finish the procedure, external volume’s status displays as Cache
Destage, even if there is no data left in the cache. You can click Refresh
View to update the status. When processing is completed, the volumes’
status changes to Disconnect.
Disconnecting a single mapped volume
Before disconnecting a mapped volume, review Prerequisite requirements
on page 5-14.
To disconnect a mapped volume
1. In Storage Navigator, click External Storages in the Storage Systems
tree.
2. In the External Storages window, click the storage system where the
mapped volume lives.
3. In the window for the selected external system, select the desired path
group.
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4. In the window for the selected path group, in the Mapped Volumes tab,
select the row for the volume you want to disconnect.
At the bottom of the window, click More Actions > Disconnect
External Volumes.
5. In the Disconnect External Volumes window, check the volume to be
disconnected, accept or enter a new task name, and then click Apply.
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When you finish the procedure, the external volume’s status displays as
Cache Destage, even if there is no data left in the cache. You can click
Refresh View to update the status. When processing is completed, the
volumes’ status changes to Disconnect.
Reconnecting external systems and volumes
When you disconnect an external volume or volumes, you can start using
them again by reconnecting.
When you reconnect a volume or system, the preserved mapping settings
and path status are compared to the current status of the volume. When
the status and settings match, the volume is again placed in mapped,
Normal status and is available for I/O operations. However, if the external
volume is not ready to be resumed, the status of the disconnected volume
is Blockade. If this occurs, see General troubleshooting on page 6-2 and
proceed as directed.
Reconnecting an external storage system, all mapped volumes
When you reconnect an external system, all the mapped external volumes
in the system are also reconnected. This is the primary method for
reconnecting the disconnected volumes in an external system.
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To reconnect a disconnected external system and mapped volumes
1. In Storage Navigator, click External Storages in the Storage Systems
tree.
2. In the External Storages window, select the row for the external
system to be reconnected.
3. Click Reconnect External Storage Systems at the bottom of the
window.
4. In the Reconnect External Storage Systems window, check the
volumes that will be reconnected, accept or enter a new task name, and
then click Apply.
5. In the Confirm window, click Apply again.
When you finish the procedure, the external volumes’ status displays as
Checking, then Normal. If the external storage system cannot be
reconnected, the status becomes Blockade.
Reconnecting a single mapped volume
To reconnect a disconnected volume
1. In Storage Navigator, click External Storages in the Storage Systems
tree.
2. In the External Storages window, click the storage system where the
volume to be reconnected resides.
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3. In the window for the selected external system, select the desired path
group.
4. In the window for the selected path group, in the Mapped Volumes tab,
select the row for the volume you want to reconnect. Status must be
Disconnect.
At the bottom of the window, click More Actions > Reconnect
External Volumes.
5. In the Reconnect External Volumes window, check the volume to be
reconnected, accept or enter a new task name, and then click Apply.
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6. Click Apply in the Confirm window.
When you finish the procedure, the external volume status displays as
Checking, then Normal. If the volume cannot be resumed because the
mapped settings and the external volume status are not in sync, the status
becomes to Blockade.
Deleting an external volume mapping
You can delete the mapping for an external volume. The data in the external
volume is not deleted.
Prerequisite information
•
The external volume or volumes to be deleted must first be
disconnected, which results in all data in cache memory being written to
the external volume.
However, you can delete a volume without disconnecting, meaning that
data in cache is not destaged to the external volume.
•
You cannot delete a mapping while the external volume is used in the
following:
LUSE volume
TrueCopy, Universal Replicator, ShadowImage, Thin Image, or Copyon-Write Snapshot pair
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A reserved volume for ShadowImage or Volume Migration.
A pool-VOL
•
For command devices, stop the application using the external volume as
a command device.
To delete the mapping for an external volume
1. In Storage Navigator, click External Storages in the Storage Systems
tree.
2. In the External Storages window, select the desired external storage
system.
3. In the window for the external system, select a path group.
4. In the window for the path group, select the external volume or volumes
that you want to delete.
5. Click More Actions > Delete External Volumes at the bottom of the
window.
6. In the Delete External Volumes window, verify the external volumes
you want to delete.
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7. For Have you already disconnected external volume of above
table?, click one of the following:
Yes if you have already disconnected the volumes.
No if you have not disconnected the volumes.
8. If you clicked No in the previous field, in the Do you want to execute
Delete External Volumes operation without writing the cache
data to the volumes?, click one of the following:
Yes to delete the external volumes without writing the data in cache
memory into the volumes.
Note: When Yes is selected, the data remaining in cache is not
guaranteed.
Cancel to disconnect the volume or volumes and then perform the
delete operation again.
You cannot continue the operation if No is selected.
9. Click Finish.
10.In the Confirm window, check settings and accept the task name shown
or enter a new one. When satisfied click Apply.
Powering off and on local, external storage systems
You must temporarily halt Universal Volume Manager functionality before
powering off external storage systems. When the systems are powered on,
you resume all functions.
The instructions in these topics should be closely followed.
•
Prerequisite operations are required.
•
A specific order must be followed:
When powering off both local and external systems, the local system
must be turned off first, then the external system.
To power on both systems, the external system must be turned on
first, then the local system.
Requirements for external storage system maintenance
You must disconnect the external system and delete external volume
mapping before making changes on the external system. When the changes
are concluded, you reconnect the system and remap the external volume.
The following changes to the external system require the removal and
remapping of the external volume:
•
Changing WWNs of target ports that connect to the local storage system
•
Changing the serial number of the external system
•
Changing LUNs of volumes in the external system
•
Reducing the volume capacity of the external volume
•
Modification on the host connected directly to a external storage system.
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If you want to change the WWNs of part of the target ports that are
connected to the local storage system, you do not need to delete the
volumes that are mapped to the local storage system.
To change the WWNs of the external storage system without
deleting the external volume mapping
1. Change the WWN of the external storage.
See the Provisioning Guide for Open Systems and the Provisioning Guide
for Mainframe Systems for detailed procedures. Changing the WWN
blocks the external path that uses the target port with a WWN that has
been changed.
2. Add an external path between the local storage system and target port
with a WWN that has been changed
3. Delete the external path that was blocked in step 1.
Before deleting external volume mapping, make sure that the volume has
no LU paths and is not part of a copy pair. See Deleting an external volume
mapping on page 5-21 for instructions.
Powering off and on the external storage system
To power off the external system
1. Stop read and write I/O to the mapped external volume.
2. If the external volume is defined as a DP-VOL in the internal system,
block all DP-VOLs for maintenance as follows:
To
a.
b.
c.
d.
e.
block all DP-VOLs in the pool
Click Pools in the Storage Systems tree.
In the tree, select the pool to be blocked.
Select the Virtual Volumes tab.
Click Select All Pages.
On the menu bar, click Actions, Logical Device, and then Block
LDEVs.
f. In the Block LDEVs window, confirm the settings and enter the task
name in the Task Name box.
g. Click Apply in the Confirm window.
3. Disconnect the external storage system. See Disconnecting external
systems and volumes on page 5-14 for instructions.
4. Perform the procedure for powering off the external storage system.
To power on the external system
1. Power on the external storage system.
2. Reconnect the external system. See Reconnecting external systems and
volumes on page 5-18 for instructions.
3. If the external volume was defined as a DP-VOL in the local system,
restore all blocked DP-VOLs.
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Monitoring and maintenance
Hitachi Virtual Storage Platform Hitachi Universal Volume Manager User Guide
To
a.
b.
c.
d.
e.
restore all DP-VOLs in the pool
Click Pools in the Storage Systems tree.
In the tree, select the pool to be restored.
Select the Virtual Volumes tab.
Click Select All Pages.
On the menu bar, click Actions, Logical Device, and then Restore
LDEVs.
f. In the Restore LDEVs window, confirm the settings and enter the
task name in the Task Name box.
g. Click Apply in the Confirm window.
Powering off and on the local storage system
Prerequisite information
You do not need to disconnect the external system when powering off only
the local system. However, if you do disconnect, when you power on the
local system again, access is disabled to the external system until you
reconnect.
To power off the local system, then power on again
1. Stop read and write I/O to the mapped external volume.
2. Perform all necessary operations for powering off the local system.
3. Turn off the power supply of the local storage system.
Data in local cache memory is written in the external volume when the
local system is powered off (all data is destaged).
4. When ready, make sure that the external system is on, and then power
on the local system.
Powering off and on both storage systems
To power off both local and external storage systems
1. Stop read or write I/O to the local storage system, including read and
write I/O with Fibre Channel connections.
2. Check the documentation for any software functions used with the
mapped external volume. For example, if the external volume is used in
a ShadowImage pair, see the Hitachi ShadowImage® User Guide.
3. Power off the local storage system.
4. When the power supply of the local system is completely off, power off
the external system.
To power on both local and external storage systems
1. Power on the external system.
2. When the power supply of the external system is completely on, power
on the local system.
3. Resume use of the mapped external volume.
4. Start read or write I/O to the local storage system.
Monitoring and maintenance
Hitachi Virtual Storage Platform Hitachi Universal Volume Manager User Guide
5–25
All read and write I/Os with Fibre Channel connections can be started.
5–26
Monitoring and maintenance
Hitachi Virtual Storage Platform Hitachi Universal Volume Manager User Guide
6
Troubleshooting
This topic provides troubleshooting information.
□
Contacting the Hitachi Data Systems Support Center
□
General troubleshooting
□
Troubleshooting external path status
□
Troubleshooting path errors for specific storage systems
□
Troubleshooting port and volume discovery problems
Troubleshooting
Hitachi Virtual Storage Platform Hitachi Universal Volume Manager User Guide
6–1
Contacting the Hitachi Data Systems Support Center
If you need to contact the Hitachi Data Systems Support Center, please
provide as much information about the problem as possible, including:
•
The circumstances surrounding the error or failure.
•
The content of any error messages displayed on the host systems.
•
The content of any error messages displayed on Storage Navigator.
•
The Storage Navigator configuration information (use the FD Dump
Tool).
•
The service information messages (SIMs), including reference codes and
severity levels, displayed by Storage Navigator.
The HDS customer support staff is available 24 hours a day, seven days a
week. If you need technical support, log on to the HDS Support Portal for
contact information: https://Portal.HDS.com.
General troubleshooting
Check the following table for the problem. After removing an error, retry the
operation.
Problem
Possible causes
Storage Navigator cannot access the •
external volume.
The external volume cannot be
mapped.
The external path is blocked.
An error occurred in the switch, or the switch
is off.
•
The cables are not properly connected.
•
The external volume was deleted in the
external system.
•
An error occurred in the external volume.
•
The path is changed in the external system.
•
The port attribute in the local storage system
is changed.
•
Topology information is not properly set.
•
The number of mapped volumes exceeds the
maximum number (63,232) available for the
local storage system.
•
There are not enough LDKC:CU:LDEV
numbers available for external volume
mapping.
•
See the problem above, “Storage Navigator
cannot access the external volume”. If the
problem persists after correcting any errors,
continue to the next item.
•
Confirm that the cable between the local and
external system is connected properly.
•
If the cable is properly connected, disconnect
it and then reconnect. After 30 seconds,
check the path status.
If the path is not restored, call the Hitachi
Data Systems Support Center.
6–2
Troubleshooting
Hitachi Virtual Storage Platform Hitachi Universal Volume Manager User Guide
Problem
Possible causes
Action is required for a path status in See Troubleshooting external path status on
the View External LUN Properties page 6-4.
dialog box.
The volume in the external system
cannot be found even after port
discovery or volume discovery was
performed.
Perform any required action in the message and
then retry the operation. If the problem persists,
see Troubleshooting port and volume discovery
problems on page 6-10.
The external volume is blocked.
•
All external paths are blocked (paths are not
connected).
•
The external volume is not set to Read/
Write.
•
The external volume is blocked by an error.
The status of the external volume is When errors occur in all external paths, the local
blockade.
storage system changes the status of the
external volume to Blockade.
•
Reconnect the volume or storage system.
•
If the volume’s status still does not change to
Normal, restore the path as described in the
problem above, “The external path is
blocked”, and then reconnect the volume
again.
"?" displays in the LUN ID (Highest
Priority) column of the Discovered
External Volumes table (Add
External Volumes window).
A corresponding external volume was not found
for the external path with the highest priority.
External volume discovery was not
completed because of failure.
Confirm the connection with the external
system; also confirm that the external volume is
correctly configured in the external system, then
perform the operation again.
After reconnecting an external
volume or system, 10 minutes have
passed but the status has not
change from Checking.
Click Refresh View on the Storage Navigator
main window. If the status remains Checking,
perform the reconnect operation again.
After disconnecting an external
volume or system, the status does
not change from Cache Destage.
Click Refresh View on the Storage Navigator
main window.
Confirm the connection with the external system
that failed during volume discovery, and perform
the operation again.
If the problem persists after a reasonable time,
call the Hitachi Data Systems Support Center.
Note that the time required for write processing
from cache to the external volume depends on
volume capacity. More time is required for larger
volumes. Processing speed is about 20 MB/s.
However, this also depends on the performance
and status of the external system.
If status does not change from Cache Destage
after a reasonable time, call the Hitachi Data
Systems Support Center.
Troubleshooting
Hitachi Virtual Storage Platform Hitachi Universal Volume Manager User Guide
6–3
Problem
Possible causes
The message, "INTERVENTION
REQUIRED", is issued to the
mainframe host as the device
status.
The device status is currently changing. Wait a
few minutes, and then check the status again.
When the transition of the device status has
completed normally, the device can be used
immediately. If the device is blocked as a result
of the status transition, see the problem above,
"The external volume is blocked".
The message, “DEVICE ERROR", is See the problem above, "The external volume is
issued to the mainframe host as the blocked"
device status.
Troubleshooting external path status
The following table shows path statuses in the View External LUN
Properties window. Descriptions and corrective actions you can take are
provided.
Also, see Troubleshooting path errors for specific storage systems on page
6-6.
Status
Description
Unknown
The path status cannot be
determined.
Call the Hitachi Data Systems
Support Center.
Blockade
The external port is blocked.
The port is blocked because of
microcode replacement, package
replacement, or other factor.
Check the status of the local
storage system. If you cannot
restore the path, call the Hitachi
Data Systems Support Center.
External
An external system setting has
device setting changed. For example, the path
changed
definition was deleted, or the
external system itself was replaced
by another device.
The port of the external system is
recognized. See your device
manufacturer's documentation to
verify that the settings on the
volumes in question have not
changed.
LDEV size
reduced
The external volume capacity was
reduced.
Check the external volume
capacity. Delete the external
volume, and then remap to it.
Not ready
The reply of the external system
was NOTREADY. Either the drive is
spinning up or the system is being
formatted.
The path cannot be used to
access the external system.
Check the status of the external
system. If you cannot restore the
path, call the Hitachi Data
Systems Support Center.
Illegal request The reply of the external system
was ILLEGALREQUEST. The
command cannot be executed to the
external system. Data protection
may be set on the external system.
6–4
Corrective action
The external system port is
recognized. Check the external
system settings. If you cannot
restore the path, call the Hitachi
Data Systems Support Center.
Troubleshooting
Hitachi Virtual Storage Platform Hitachi Universal Volume Manager User Guide
Status
Description
Corrective action
Command
aborted
The reply of the external system
was ABORTEDCOMMAND. An error
may have occurred on the external
system side.
The external system port is
recognized. Check external
system settings and the physical
connection to the external
system (cables and switches). If
you cannot restore the path, call
the Hitachi Data Systems Support
Center.
Busy
The external system is in the BUSY
status.
The external system port is
recognized. Check whether the
external system configuration
causes excessive load on the
system. If you cannot restore the
path, call the Hitachi Data
Systems Support Center.
LDEV
reserved
The external system is in Reserve
status. The system cannot be
accessed.
Remove the Reserve status on
the external system.
Response
error
The external system is in blocked
status caused by an abnormal reply
(Response). You may not be able to
access the system, or data
protection may be set.
The external system port is
recognized. Check the setting and
status of the external system. If
you cannot restore the path, call
the Hitachi Data Systems Support
Center.
Initiator port
The port attribute of the external
system has been changed to
“initiator”.
Set the port attribute of the
external system to “target”. If
you cannot restore the path, call
the Hitachi Data Systems Support
Center.
Destage
Failed
The writing of data from cache
memory to the external volume
failed.
Reconnect the external volume or
system. When status is Normal,
disconnect the volume or system.
You may need to try this multiple
times. If the problem remains,
call the Hitachi Data Systems
Support Center.
Unknown port The port attribute of the external
system is unknown.
The external system port is
recognized. Check external
system settings and the physical
connection to the external
system (cables and switches). If
you cannot restore the path, call
the Hitachi Data Systems Support
Center.
Troubleshooting
Hitachi Virtual Storage Platform Hitachi Universal Volume Manager User Guide
6–5
Status
Description
Corrective action
Cannot detect The external path has been removed If you cannot restore the path
port
or the external system port cannot after checking the possible
be found. Possible causes are:
causes, call the Hitachi Data
Systems Support Center.
• The fibre cable is not properly
connected.
•
The topology does not match
between the external and target
ports.
•
Because security is set on the
port, the external system
cannot be recognized from the
local system.
•
If the external system is
connected through switches, the
switch setting may be incorrect.
Internal error
A program error occurred, or there
is a logical contradiction.
Call the Hitachi Data Systems
Support Center.
Timeout
Processing was retried because of
an abnormal reply; however,
processing was stopped because of
timeout.
The external system port is
recognized. Check external
system settings and the physical
connection to the external
system (cables and switches). If
you cannot restore the path, call
the Hitachi Data Systems Support
Center.
Device check
error
An external volume is mapped, but Check the volume’s status in the
you cannot access the volume in the external system and take any
external system.
necessary corrective action.
Format the volume if it is not
formatted.
Medium error
The external volume has become
inaccessible.
Check the volume’s status in the
external system and take any
necessary corrective action.
Format the volume if it is not
formatted.
Troubleshooting path errors for specific storage systems
Storage system-specific recovery information is provided for the following
errors:
6–6
•
External device setting changed
•
Illegal request
•
Cannot detect port
Troubleshooting
Hitachi Virtual Storage Platform Hitachi Universal Volume Manager User Guide
HUS VM, VSP G1000, Virtual Storage Platform, and Universal
Storage Platform V/VM
Path Status
Description and corrective actions
External device •
setting changed
Illegal request
or
•
The volume’s access attribute may have been changed by Data
Retention Utility. If the volume is protected by the access
attribute, release the protection.
•
If the volume is a pair volume, it may be protected because of the
pair status. If this is the case, change the pair status or delete the
pair.
•
The volume’s access attribute may have been changed by Data
Retention Utility. If the volume is protected by the access
attribute, release the protection.
•
There is a problem with connection to the external storage
system. The possible causes are:
Response error
Cannot detect
port
LU path settings may have been changed by LUN Manager. Either
change the settings back to the values used when the volume was
mapped, or perform the Delete Volume and then Add Volume
operations using Universal Volume Manager.
- Make sure the fibre cable is connected correctly.
- The setting of the topology may not match between the external
port and the target port. Make sure that the Fibre Channel ports
are set properly using LUN Manager.
- If the external storage system is connected through switches,
make sure that the switch settings are correct.
•
LUN security may have been enabled by LUN Manager. If so,
disable it.
Universal Storage Platform / TagmaStore NSC
Path Status
Description and corrective actions
External device •
setting changed
Illegal request
or
LU path settings may have been changed by LUN Manager. Either
change the settings back to the values used when the volume was
mapped, or perform the Delete LU and then Add LU operations
using Universal Volume Manager.
•
The volume’s access attribute may have been changed by Data
Retention Utility. If the volume is protected by the access
attribute, release the protection.
•
If the volume is a pair volume, it may be protected because of the
pair status. If this is the case, change the pair status or delete the
pair.
•
The volume’s access attribute may have been changed by Data
Retention Utility. If the volume is protected by the access
attribute, release the protection.
Response error
Troubleshooting
Hitachi Virtual Storage Platform Hitachi Universal Volume Manager User Guide
6–7
Path Status
Cannot detect
port
Description and corrective actions
•
There is a problem with connection to the external storage
system. The possible causes are:
- Make sure the fibre cable is connected correctly.
- The setting of the topology may not match between the external
port and the target port. Make sure that the Fibre Channel ports
are set properly using LUN Manager.
- If the external storage system is connected through switches,
make sure that the switch settings are correct.
•
LUN security may have been enabled by LUN Manager. If so,
disable it.
Lightning 9900 V
Path Status
Description and corrective actions
External device •
setting changed
LU path settings may have been changed by LUN Manager. Either
change the settings back to the values used when the volume was
mapped, or perform the Delete LU and then Add LU operations
using Universal Volume Manager.
•
The volume’s access attribute may have been changed by Open
LDEV Guard. If the volume is protected by the access attribute,
release the protection.
•
If the volume is a pair volume, it may be protected because of the
pair status. If this is the case, change the pair status or delete the
pair.
•
The volume’s access attribute may have been changed by Open
LDEV Guard. If the volume is protected by the access attribute,
release the protection.
•
There is a problem with connection to the external storage
system. The possible causes are:
Illegal request
or
Response error
Cannot detect
port
- Make sure the fibre cable is connected correctly.
- The setting of the topology may not match between the external
port and the target port. Make sure that the Fibre Channel ports
are set properly using LUN Manager.
- If the external storage system is connected through switches,
make sure that the switch settings are correct.
•
LUN security may have been enabled by LUN Manager. If so,
disable it.
Lightning 9900
Path Status
Description and corrective actions
External device LU path settings may have been changed by LUN Manager. Either
setting changed change the settings back to the values used when the volume was
mapped, or perform the Delete LU and then Add LU operations using
Universal Volume Manager.
Illegal request
or
Response error
6–8
If the volume is a pair volume, it may be protected because of the
pair status. If this is the case, change the pair status or delete the
pair.
Troubleshooting
Hitachi Virtual Storage Platform Hitachi Universal Volume Manager User Guide
Path Status
Cannot detect
port
Description and corrective actions
•
There is a problem with connection to the external storage
system. The possible causes are:
- Make sure the fibre cable is connected correctly.
- The setting of the topology may not match between the external
port and the target port. Make sure that the Fibre Channel ports
are set properly using LUN Manager.
- If the external storage system is connected through switches,
make sure that the switch settings are correct.
•
LUN security may have been enabled by LUN Manager. If so,
disable it.
Thunder 9500V
Path Status
Description and corrective actions
External device •
setting changed
LU path settings may have been changed by LUN Management.
Either change the settings back to the values used when the
volume was mapped, or perform the Delete LU and then Add LU
operations using Universal Volume Manager.
•
The volume’s access attribute may have been changed by Open
SDEV Guard. If the volume is protected by the access attribute,
release the protection.
•
If the volume is a pair volume, it may be protected because of the
pair status. If this is the case, change the pair status or delete the
pair.
•
The volume’s access attribute may have been changed by Open
SDEV Guard. If the volume is protected by the access attribute,
release the protection.
•
There is a problem with connection to the external storage
system. The possible causes are:
Illegal request
or
Response error
Cannot detect
port
- Make sure the fibre cable is connected correctly.
- The setting of the topology may not match between the external
port and the target port. Make sure that the Fibre Channel ports
are set properly using LUN Management.
- If the external storage system is connected through switches,
make sure that the switch settings are correct.
•
The host group LUN security may have been enabled by LUN
Management. If so, disable it.
HUS/AMS/WMS
Path Status
Description and corrective actions
External device •
setting changed
•
LU path settings may have been changed by LUN Manager. Either
change the settings back to the values used when the volume was
mapped, or perform the Delete LU and then Add LU operations
using Universal Volume Manager.
The volume’s access attribute may have been changed by Data
Retention Utility. If the volume is protected by the access
attribute, release the protection.
Troubleshooting
Hitachi Virtual Storage Platform Hitachi Universal Volume Manager User Guide
6–9
Path Status
Illegal request
or
Description and corrective actions
•
If the volume is a pair volume, it may be protected because of the
pair status. If this is the case, change the pair status or delete the
pair.
•
The volume’s access attribute may have been changed by Data
Retention Utility. If the volume is protected by the access
attribute, release the protection.
•
There is a problem with connection to the external storage
system. The possible causes are:
Response error
Cannot detect
port
- Make sure the fibre cable is connected correctly.
- The setting of the topology may not match between the external
port and the target port. Make sure that the Fibre Channel ports
are set properly using LUN Manager.
- If the external storage system is connected through switches,
make sure that the switch settings are correct.
•
The host group LUN security may have been enabled by LUN
Manager. If so, disable it.
SVS200
Path Status
Description and corrective actions
External device •
setting changed
Illegal request
or
•
The volume’s access attribute may have been changed by LUN
Security XP Extension. If the volume is protected by the access
attribute, release the protection.
•
If the volume is a pair volume, it may be protected because of the
pair status. If this is the case, change the pair status or delete the
pair.
•
The volume’s access attribute may have been changed by LUN
Security XP Extension. If the volume is protected by the access
attribute, release the protection.
•
There is a problem with connection to the external storage
system. The possible causes are:
Response error
Cannot detect
port
LU path settings may have been changed by LUN Management.
Either change the settings back to the values used when the
volume was mapped, or perform the Delete LU and then Add LU
operations using Universal Volume Manager.
- Make sure the fibre cable is connected correctly.
- The setting of the topology may not match between the external
port and the target port. Make sure that the Fibre Channel ports
are set properly using LUN Management.
- If the external storage system is connected through switches,
make sure that the switch settings are correct.
•
LUN security may have been enabled by LUN Management. If so,
disable it.
Troubleshooting port and volume discovery problems
The following table shows corrective actions you can take for port and
volume discovery problems.
6–10
Troubleshooting
Hitachi Virtual Storage Platform Hitachi Universal Volume Manager User Guide
Problem
Corrective action
The port on the local storage
system and port on the external
system are not connected.
Connect the External port of the local system and
the external system port.
The cable for the switch is not
Connect the cable to the correct port on the
connected correctly, or the switch’s switch. Or change the port status to the normal
port is blocked.
status.
Zoning for the switch is not set
appropriately.
Make sure the zoning configuration is correct so
that the External port of the local system can
communicate with the external system port.
The external system is not
connected to the External port on
the local system.
Connect the external system to the External port
of the local system. If necessary, change the local
system port to “External”.
External volume returned
RESERVATION CONFLICT.
Release the reserved state of the external
volume.
Port security is set on the external
system.
Cancel the port security setting or change the
security of the external system so that the local
system can access the port of the external
system.
No LU is configured on the external Configure an LU on the port.
system port.
External volume capacity is less
than the supported capacity for
Universal Volume Manager.
The external volume is configured
as a management LU.
Remote command devices of the
external system are cascaded.
Perform one of the following:
•
Increase the external volume’s capacity to be
equal or larger than the supported capacity.
•
Use a security function or delete the LU
setting from the external system port so that
the local system cannot recognize a volume
with insufficient capacity.
If a management LU, such as Universal Xport LU,
is configured on the external system port,
perform one of the following:
•
Make sure that at least one LU is used for data
storage and has a smaller LUN than the
management LU’s LUN. Also make sure that
the data storage LU is set to the port
connected to the local system.
•
Delete the management LU from the port
connected to the local system.
•
Use a security function and configure the
access attribute of the management LU to
prohibit read and write operations.
Perform one of the following:
•
Change the configuration so that the remote
command devices are not cascaded.
•
Use a security function or delete the LU
setting from the port of the connected
external system so that the local system
cannot recognize the remote command
devices.
Troubleshooting
Hitachi Virtual Storage Platform Hitachi Universal Volume Manager User Guide
6–11
Problem
Corrective action
External system information
retrieved by port discovery is not
found in the profile information.
Perform one of the following:
•
Connect an external system supported by
Universal Volume Manager.
•
Call the Hitachi Data Systems Support Center
to ask if the external system is supported by
Universal Volume Manager. If the system is
supported, install the microcode version that
supports the external system or install the
profile information of the external system.
Login to the external system failed. Perform one of the following:
The external volume is not in
Normal status, or a failure or error
occurred in retrieving information
from the external system.
•
Make sure that the port of the external system
is in Normal status.
•
Register the WWN to the external system to
allow login from the local system.
Make sure that the external system or the
external volume is in the Normal status.
If none of the actions suggested in the table provide volume discovery,
remove the cable connection between the local and external storage
systems, and then reconnect the storage systems. After 30 seconds, retry
the operation.
6–12
Troubleshooting
Hitachi Virtual Storage Platform Hitachi Universal Volume Manager User Guide
A
Supported external storage systems
This topic provides required configuration settings for many of the
supported external storage systems.
□
External systems
□
VSP G1000
□
HUS VM Storage System
□
Virtual Storage Platform
□
Universal Storage Platform V/VM
□
Universal Storage Platform/TagmaStore NSC
□
Lightning 9900 V
□
Lightning 9900
□
Thunder 9500V
□
HUS/AMS/WMS
□
SVS200 storage system
□
EVA storage system
□
Sun StorEdge 6120/6320
□
Sun StorageTek FlexLine 380
□
Sun StorageTek 2540
Supported external storage systems
Hitachi Virtual Storage Platform Hitachi Universal Volume Manager User Guide
A–1
A–2
□
Sun StorageTek V2X2
□
EMC CLARiiON CX series
□
EMC VNX series
□
EMC Symmetrix series
□
IBM DS3000/DS4000/DS5000 series
□
IBM V7000 series
□
IBM SVC series
□
IBM XIV series
□
Fujitsu FibreCAT CX series
□
Fujitsu DX60/80/90 S2 and Fujitsu DX400 S2
□
SGI IS4600 series
□
3Par T800, F400, V800, V400 series
□
Storage system with a product name displayed as "(Generic)"
Supported external storage systems
Hitachi Virtual Storage Platform Hitachi Universal Volume Manager User Guide
External systems
The storage systems in the following sections can be connected to VSP as
external storage systems.
Note: Not all supported systems’ information is provided here. If you do
not find your storage system, refer to http://www.hds.com/products/
storage-systems/specifications/supported-external-storage.html for a
complete listing.
VSP G1000
Use the following settings on the external system:
•
The port must be set to the host group for the Windows hosts (host
mode 0C: Windows, host mode 2C: Windows Extension).
•
The port attribute must be set to Target port or RCU target port.
•
If the external VSP G1000 system uses Open LDEV Guard, set System
Option Mode (SOM) 701 to ON on the local VSP system.
HUS VM Storage System
Use the following settings on the external system:
•
The port must be set to the host group for the Windows hosts (host
mode 0C: Windows, host mode 2C: Windows Extension).
•
The port attribute must be set to Target port or RCU target port.
•
If the external HUS VM Storage System uses Open LDEV Guard, set
System Option Mode (SOM) 701 to ON on the local VSP system.
Virtual Storage Platform
Use the following settings on the external system:
•
The port must be set to the host group for the Windows hosts (host
mode 0C: Windows, host mode 2C: Windows Extension).
•
The port attribute must be set to Target port or RCU target port.
•
If the external VSP system uses Open LDEV Guard, set System Option
Mode (SOM) 701 to ON on the local VSP system.
Universal Storage Platform V/VM
Use the following settings on the external system:
•
The port must be set to the host group for the Windows hosts (host
mode 0C: Windows, host mode 2C: Windows Extension).
•
The port attribute must be set to Target port or RCU target port.
•
If the external USP V/VM system uses Open LDEV Guard, set SOM 701
to ON on the local VSP system.
Supported external storage systems
Hitachi Virtual Storage Platform Hitachi Universal Volume Manager User Guide
A–3
Universal Storage Platform/TagmaStore NSC
Use the following settings on the external system:
•
The port must be set to the host group for the Windows hosts (host
mode 0C: Windows, host mode 2C: Windows Extension).
•
The port attribute must be set to Target port or RCU target port.
•
If the external USP system uses Open LDEV Guard, set SOM 701 to ON
on the local VSP system.
Host mode option for a volume larger than 2 TB
If a volume’s capacity is more than 2 TB, host mode option No. 24 must be
enabled before mapping it as an external volume. For instructions, see the
LUN Manager User's Guide for the Universal Storage Platform / TagmaStore
NSC storage system.
Lightning 9900 V
Use the following settings on the external system:
•
The port must be set to the host group for the Windows hosts (host
mode 0C: Windows, host mode 2C: Windows Extension).
•
The port attribute must be set to Target port or RCU target port.
Lightning 9900
Use the following settings on the external system:
•
The port’s host mode must be set to PC Server (0C).
•
The port attribute must be set to Target port or RCU target port.
Thunder 9500V
The following versions are recommended. If you use an earlier version, the
SATA drive information may not display correctly.
•
For Thunder 9530V, Thunder 9520V, Thunder 9570V: version 0658 or
later.
•
For Thunder 9580V, Thunder 9585V: version 1658 or later.
The following table shows the system parameters that must be specified for
ports on the Thunder 9500V storage system.
A–4
Supported external storage systems
Hitachi Virtual Storage Platform Hitachi Universal Volume Manager User Guide
Window Names
System Startup
Settings
Parameters
Parameter Settings
Start Attribute
Single Mode
Use when the Thunder 9500V is in a
one-controller configuration.
Dual Active Mode
Use when the Thunder 9500V is in a
two-controller configuration.
Be sure to specify that Data Share
Mode will be used.
Hot Stand-By Mode
Do not specify this parameter.
Common 1
Delay Planned Shutdown
Optional
OPTION 1
SCSI Fibre Channel
Common Options
Optional
OPTION 2
SCSI Fibre Channel
Common Options
Optional
Data Striping
Operation if the processor
failure occurs
Reset of occurred
Inquiry Setting
Command Queuing Mode
ON
Vendor ID
HITACHI (default)
Product ID
DF600F (default)
ROM Microprogram Version Optional
Port Type
Controller Option
Host Connection
Mode
RAM Microprogram Version
Optional
WEB Title
Optional
Reset/LIP Mode
Reset/LIP Mode (Signal)
Optional
Reset/LIP Mode (Process)
Optional.
LIP Reset Mode
Optional
RS232C Error Information
Outflow Mode
Optional
Write and verify mode
ON
Host Connection Mode 1
Standard Mode
Host Connection Mode 2
HISUP Mode (do not specify any
other parameter).
Identifying the 9500 V model using the serial number
You can identify the storage system model from the serial number displayed
in the Vendor / Model / Serial Number column in the External Storage
System tab.
The following table shows the relationship between the number in the
Serial Number column and the storage system model.
Displayed Serial Number
Model
D600XXXX
9570V, 9520V
D60JXXXX
9530V
Supported external storage systems
Hitachi Virtual Storage Platform Hitachi Universal Volume Manager User Guide
A–5
Displayed Serial Number
D60HXXXX
Model
9580V, 9585V
Note: In serial numbers, "X" is an arbitrary number or character.
Identifying the controller using the port WWN
You can identify the controller (controller 0 or controller 1) from the WWN
of the port.
The following table describes the relationship between the port WWN and
the controller.
Model
9570V
Controller
Controller 0
9530V
9520V
WWN of Port
XXXXXXXXXXXXXXX0
XXXXXXXXXXXXXXX1
Controller 1
XXXXXXXXXXXXXXX2
XXXXXXXXXXXXXXX3
9580V
Controller 0
9585V
XXXXXXXXXXXXXXX0
XXXXXXXXXXXXXXX1
XXXXXXXXXXXXXXX2
XXXXXXXXXXXXXXX3
Controller 1
XXXXXXXXXXXXXXX4
XXXXXXXXXXXXXXX5
XXXXXXXXXXXXXXX6
XXXXXXXXXXXXXXX7
Note: In WWNs, "X" is an arbitrary number or character. The ports in the same physical
storage system have the identical value.
HUS/AMS/WMS
The table below shows the system parameters that must be specified for
ports on HUS, AMS, and WMS storage systems when used with Universal
Volume Manager. You can specify or omit any other parameters.
Also, confirm the following two settings using Storage Navigator Modular or
Storage Navigator Modular2:
A–6
•
Set the data transfer speed of the external port to a fixed value other
than Auto.
•
Set the data transfer speed of the target port of the HUS/AMS/WMS
storage system to a fixed value consistent with the data transfer speed
of the external port.
Supported external storage systems
Hitachi Virtual Storage Platform Hitachi Universal Volume Manager User Guide
Window
Names
Boot Options
System
Parameter
Parameters
Parameter Settings
Start Attribute
Single Mode
Specify when HUS/AMS/WMS is in a
one-controller configuration.
Dual Active Mode
Specify when HUS/AMS/WMS is a twocontroller configuration.
Delay Planned Shutdown
Optional
Drive blocking mode
Optional
Vendor ID
HITACHI (default-do not change)
Product ID
DF600F (default-do not change)
ROM Microprogram Version
Optional
RAM Microprogram Version
Optional
Option
Optional
Operation if the processor
failure occurs
Reset of occurred.
WEB Title
Optional
Write and verify mode
For AMS 1000, AMS 500, AMS 200 and
WMS 100: ON
For HUS 150, HUS 130, HUS 110, AMS
2500, AMS 2300, AMS 2100, and AMS
2010: OFF
Port Options
Port Option
Optional
Host
Connection
Mode
Host Connection Mode 1
Set AMS common setting to Standard
Mode.
Host Connection Mode 2
Do not specify any parameters for AMS
additional settings.
For AMS 1000, AMS 500, AMS 200 and
WMS 100, do not specify HISUP OFF
mode.
Identifying the HUS/AMS/WMS model using the serial number
When the external storage system is HUS, AMS, or WMS, you can identify
the storage system model from the serial number displayed in the Serial
Number column in the Volume Operation window.
The following table describes the relationship between the number in the
Serial Number column and the storage system model.
Storage System
HUS
Displayed Serial Number
Model
95XXXXX
HUS 150
93XXXXX
HUS 130
91XXXXX
HUS 110
Supported external storage systems
Hitachi Virtual Storage Platform Hitachi Universal Volume Manager User Guide
A–7
Storage System
AMS
WMS
Displayed Serial Number
Model
87XXXXXX
AMS 2500
85XXXXXX
AMS 2300
83XXXXXX
AMS 2100, AMS 2010
77XXXXXX
AMS 1000
75XXXXXX
AMS 500
73XXXXXX
AMS 200
71XXXXXX
WMS 100
In serial numbers, "X" is an arbitrary number or character.
When the model of HUS/AMS/WMS storage system is changed, the Serial
Number is changed as well. If the HUS/AMS/WMS storage system is used
as an external storage system, the mapped external volume may be
blocked. To correct this problem, you can delete the mapping of the external
volume and remap it to use the blocked external volume. See Requirements
for external storage system maintenance on page 5-23 for detailed
information on remapping.
Identifying the controller using the port WWN (HUS/AMS/WMS)
When the external storage system is HUS, AMS, or WMS, you can identify
the controller (controller 0 or controller 1) from the port WWN.
The following table describes the relationship between the port WWN and
the controller.
Model
Controller
WWN of Port
AMS 200
Controller 0
XXXXXXXXXXXXXXX0
WMS 100
Controller 1
XXXXXXXXXXXXXXX1
AMS 2100
Controller 0
XXXXXXXXXXXXXXX0
AMS 2010
AMS 500
XXXXXXXXXXXXXXX1
Controller 1
XXXXXXXXXXXXXXX2
XXXXXXXXXXXXXXX3
HUS 110
Controller 0
XXXXXXXXXXXXXXX0
HUS 130
XXXXXXXXXXXXXXX1
AMS 2300
XXXXXXXXXXXXXXX2
AMS 1000
XXXXXXXXXXXXXXX3
Controller 1
XXXXXXXXXXXXXXX4
XXXXXXXXXXXXXXX5
XXXXXXXXXXXXXXX6
XXXXXXXXXXXXXXX7
A–8
Supported external storage systems
Hitachi Virtual Storage Platform Hitachi Universal Volume Manager User Guide
Model
HUS 150
Controller
Controller 0
AMS 2500
WWN of Port
XXXXXXXXXXXXXXX0
XXXXXXXXXXXXXXX1
XXXXXXXXXXXXXXX2
XXXXXXXXXXXXXXX3
XXXXXXXXXXXXXXX4
XXXXXXXXXXXXXXX5
XXXXXXXXXXXXXXX6
XXXXXXXXXXXXXXX7
Controller 1
XXXXXXXXXXXXXXX8
XXXXXXXXXXXXXXX9
XXXXXXXXXXXXXXXA
XXXXXXXXXXXXXXXB
XXXXXXXXXXXXXXXC
XXXXXXXXXXXXXXXD
XXXXXXXXXXXXXXXE
XXXXXXXXXXXXXXXF
Note: In WWNs, "X" is an arbitrary number or character. The ports in a physical storage
system have the identical value.
When the model of HUS/AMS/WMS storage system is changed, the WWN of
the port is changed as well. If the HUS/AMS/WMS storage system is used
as an external storage system, the mapped external path may be blocked.
To correct this problem, you can delete the mapping of the external path
and remap it to use the blocked external path. See Requirements for
external storage system maintenance on page 5-23 for detailed information
on remapping.
Identifying logical volumes using Characteristic1
The Characteristic1 value is the internal LUN number of the LUNS from the
AMS/WMS.
Caution on using the power savings option
When an HUS 150, HUS 130, HUS 110, AMS 2500, AMS 2300, AMS 2100,
or AMS 2010 storage system is connected as an external system with the
Power Savings option is enabled, do not access external volumes from a
host if the external volumes are spinning down. This prevents the external
volume status from changing to Blockade.
If external volume status changes to Blockade, the volume is automatically
restored in several hours. You can also manually restore the external
volumes by reconnecting the external volume.
AMS 2000 series guidelines
•
Avoid unnecessary load to the external storage system. Path mode
between storage systems is Multi mode; therefore, when many external
paths and mapping volumes are mapped, the load to the external
Supported external storage systems
Hitachi Virtual Storage Platform Hitachi Universal Volume Manager User Guide
A–9
system is high; some commands from host to VSP or from VSP to the
external system may time out. To keep the proper load, the following is
recommended.
Specify two external paths. Set the paths to the ports of each
controller of the AMS 2000 series system.
Set the queue to 500 or fewer commands issued at the same time
from a AMS 2000 series system. The formula to calculate the number
of queue commands per system is as follows.
(number of queues) x (number of external paths) x (number
of concurrent external volume commands) < 500
For more information about command queue settings, see Editing
external WWN settings on page 5-6.
•
When using external volumes for replication, the copy operation needs
to be distributed to two or more RAID groups.
There is an upper bound to the number of pairs that can be used for
initial copy or resynchronization. Therefore, the copy operation may
focus on a specific RAID group according to the order of the operation
when it is performed to two or more external volumes.
If the copy operation focuses on a specific RAID group, then the AMS
2000 drive could bottleneck.
SVS200 storage system
Use the following settings on the external system:
•
The port must be set to the host group for the Windows hosts (host
mode 0C: Windows, host mode 2C: Windows Extension).
•
The port attribute must be set to Target port or RCU target port.
EVA storage system
Use the following settings on the external system:
•
The port must be configured as a target attached to a Windows host.
•
EVA storage systems with microcode version 4.000 or later can be
connected as an external system.
•
On the local VSP storage system, set SOM 720 to ON for active path
load-balancing support.
Set EVA system parameters in the following table. For parameters not
shown, refer to the EVA system documentation for connection parameters.
Parameter
Add a Host
Host OS
Parameter Setting
Windows
The WWN of each VSP port connected to an EVA storage system must be
registered to the EVA system. See EVA storage system documentation for
details on registering WWNs
A–10
Supported external storage systems
Hitachi Virtual Storage Platform Hitachi Universal Volume Manager User Guide
Identifying logical volumes using Characteristic2
With an EVA external storage system, LUNs appear as Characteristic1 in
Storage Navigator windows.
If you search for the logical volumes by specifying the WWN for EVA Port A
as illustrated in the following figure, logical volumes LUN 1 and LUN 2 are
found for each of HostGroup-1 and HostGroup-2.
In this case, two different logical volumes with the same name (LUN 1 and
LUN 2) are found that can be connected from EVA Port A. But you cannot
determine which LUN 1 and LUN 2 belong to HostGroup-1 or HostGroup-2
only by Characteristic1.
However, in Storage Navigator, you can identify the logical volumes
referring to Characteristic2. The first 32 characters of Characteristic2
indicate the World Wide LUN Name. Identify the logical volume of the EVA
storage system by this World Wide LUN Name.
Sun StorEdge 6120/6320
System option mode for connecting Sun StorEdge 6120/6320
When you connect Sun StorEdge 6120/6320 as an external storage system,
you must set SOM 725 of the local storage system to ON. If SOM 725 is not
set to ON, the external storage system might be blocked when performing
maintenance tasks such as rebooting the controller of the external storage
system before the firmware update.
For more information about using SOM 725, log on to the Hitachi Data
Systems Support Portal: https://Portal.HDS.com.
System option parameters for connecting Sun StorEdge 6120/
6320
The port must be configured as a target attached to a Windows host.
Supported external storage systems
Hitachi Virtual Storage Platform Hitachi Universal Volume Manager User Guide
A–11
Set system parameters according to the following table. For connection
parameters not shown, refer to the Sun StorEdge 6120/6320 system
documentation.
On the local VSP storage system, set system option mode 725 to ON for
support of Sun online maintenance operation.
Parameter
Parameter Setting
port host
SUN
Sun StorageTek FlexLine 380
System option mode for connecting Sun StorageTek FlexLine 380
When you connect Sun StorageTek FlexLine 380 as an external storage
system, you must set SOM 725 of the local storage system to ON. If SOM
725 is not set to ON, the external storage system might be blocked when
performing maintenance tasks such as rebooting the controller of the
external storage system before the firmware update.
For more information about using SOM 725, log on to the Hitachi Data
Systems Support Portal: https://Portal.HDS.com.
System option parameters for connecting Sun StorageTek
FlexLine 380
The port must be configured as a target attached to a Windows host.
Set system parameters according to the following table. For connection
parameters not shown, refer to the Sun StorageTek FlexLine 380
documentation.
Parameter
host type
Parameter Setting
Windows Non-clustered (DMP Support)
Sun StorageTek 2540
System option mode for connecting Sun StorageTek 2540
When you connect Sun StorageTek 2540 as an external storage system, you
must set SOM 725 of the local storage system to ON. If SOM 725 is not set
to ON, the external storage system might be blocked when performing
maintenance tasks such as rebooting the controller of the external storage
system before the firmware update.
For more information about using SOM 725, log on to the Hitachi Data
Systems Support Portal: https://Portal.HDS.com.
System option parameters for connecting Sun StorageTek 2540
The port must be configured as a target attached to a Windows host.
A–12
Supported external storage systems
Hitachi Virtual Storage Platform Hitachi Universal Volume Manager User Guide
Set system parameters according to the following table. For connection
parameters not shown, refer to Sun StorageTek 2540 documentation.
Parameter
host type
Parameter Setting
Windows 2K non Clustered DMP
Sun StorageTek V2X2
The port must be configured as a target attached to a Windows host.
Important: Use only one external path when you mapping external
volumes. Do not add alternate paths after you finish mapping external
volumes.
EMC CLARiiON CX series
The port must be configured as a target attached to a Windows host.
System option mode for connecting EMC CLARiiON CX series
When you connect an EMC CLARiiON CX series as an external storage
system, you must set SOM 725 of the local storage system to ON. If SOM
725 is not set to ON, the external storage system might be blocked when
performing maintenance tasks such as rebooting the controller of the
external storage system before the firmware update.
For more information about using SOM 725, log on to the Hitachi Data
Systems Support Portal: https://Portal.HDS.com.
System parameters for connecting EMC CLARiiON CX series
When you connect an EMC CLARiiON CX series as an external storage
system, set the system parameters according to the following table.
Parameter
Setting
Initiator Type
CLARiiON Open
Failover Mode
2
ArrayCommPath
Disabled
For system parameters not shown in the table, see the EMC CLARiiON CX
series documentation.
Note: Volumes created with Individual Disk Units (JBOD disks) of EMC
CLARiiON CX series are not supported. Make sure that LUN0 is defined for
each port on the EMC CLARiiON CX series side.
Supported external storage systems
Hitachi Virtual Storage Platform Hitachi Universal Volume Manager User Guide
A–13
EMC VNX series
System option mode for connecting EMC VNX series
When you connect an EMC VNX series as an external storage system, you
must set SOM 725 of the local storage system to ON. If SOM 725 is not set
to ON, the external storage system might be blocked when performing
maintenance tasks such as rebooting the controller of the external storage
system before the firmware update.
For more information about using SOM 725, log on to the Hitachi Data
Systems Support Portal: https://Portal.HDS.com.
System parameters for connecting EMC VNX series
When you connect an EMC VNX series as an external storage system, set
the system parameters of the EMC VNX series according to the following
table:
Parameter
Setting
Initiator Type
CLARiiON Open
Failover Mode
2
ArrayCommPath
Disabled
For system parameters not shown in the table, see the EMC VNX series
documentation.
Note: Volumes created with Individual Disk Units (JBOD disks) of EMC
VNX series are not supported. Make sure that LUN0 is defined for each port
on the EMC VNX series side.
EMC Symmetrix series
The port must be configured as a target attached to a Windows host.
Set system parameters according to the following table. For connection
parameters not shown, refer to EMC Symmetrix series documentation
Parameter
Parameter Setting
SC3 flag
Enable
SPC2 flag
Disable
On the local VSP system, system option mode 745 needs to be ON.
IBM DS3000/DS4000/DS5000 series
The port must be configured as a target attached to a Windows host.
Set system parameters according to the following table. For connection
parameters not shown, refer to IBM DS3000/DS4000/DS5000 series
documentation.
A–14
Supported external storage systems
Hitachi Virtual Storage Platform Hitachi Universal Volume Manager User Guide
Parameter
Parameter Setting
host type
When alternate paths are connected to different clusters on
the DS3000/DS4000/DS5000 series side: Linux
IBM V7000 series
Set system parameters according to the following table. For connection
parameters not shown, refer to the IBM V7000 series documentation.
Table A-1 System parameters for connecting IBM V7000 series
Parameter
Parameter setting
host type
Generic
The model name of the IBM V7000 series is displayed as "SVC" on the
Storage Navigator window.
IBM SVC series
The port must be configured as a target attached to a Windows host.
Set system parameters according to the following table. For connection
parameters not shown, refer to IBM SVC series documentation.
Parameter
Parameter Setting
host type
Generic
IBM XIV series
The port must be configured as a target attached to a Windows host.
Device serial number differs between IBM XIV series and VSP, as shown in
the following table.
Display in VSP
Item
Display in IBM XIV
Type
Item
Type
First 2 digits of Serial
Number
Decimal value
First 2 digits of (System)
Serial number
Decimal value
Last 5 digits of Serial
Number
Hexadecimal
value
Last 5 digits of (System)
Serial number
Decimal value
Characteristic 1
Hexadecimal
value
Device serial number
Decimal value
Fujitsu FibreCAT CX series
The port must be configured as a target attached to a Windows host.
Set system parameters according to the following table. For connection
parameters not shown, refer to Fujitsu FibreCAT CX series documentation.
Supported external storage systems
Hitachi Virtual Storage Platform Hitachi Universal Volume Manager User Guide
A–15
Parameter
Parameter Setting
Initiator Type
CLARiiON Open
Failover Mode
2
Volumes created with the RAID0 level or Individual Disk Units (JBOD disks)
of Fujitsu FibreCAT CX series are not supported.
System option mode for connecting Fujitsu FibreCAT CX series
When you connect the Fujitsu FibreCAT CX series as an external storage
system, you must set SOM 725 of the local storage system to ON. If SOM
725 is not set to ON, the external storage system might be blocked when
maintenance tasks such as rebooting the controller of the external storage
system is performed before the firmware update.
For more information about using SOM 725, log on to the Hitachi Data
Systems Support Portal: https://Portal.HDS.com.
Fujitsu DX60/80/90 S2 and Fujitsu DX400 S2
The port must be configured as a target attached to a Windows host.
Set system parameters according to the following table. For connection
parameters not shown, refer to Fujitsu DX60/80/90 S2 or Fujitsu DX 400 S2
documentation.
Parameter
Parameter Setting
Inquiry VPD ID Type in Setup Host
Response screen
Type1 + Type3
Load Balance Response in Setup Host
Response screen
Busy
SGI IS4600 series
The port must be configured as a target attached to a Windows host.
Set system parameters according to the following table. For connection
parameters not shown, refer to SGI IS4600 series documentation.
Parameter
host type
Parameter Setting
When alternate paths are connected to
different clusters on the SGI IS4600 series
side: Linux
3Par T800, F400, V800, V400 series
The port must be configured as a target attached to a windows host.
Set system parameters according to the following tables. For connection
parameters not shown, refer to 3Par T800, F400, V800 or V400 series
documentation.
A–16
Supported external storage systems
Hitachi Virtual Storage Platform Hitachi Universal Volume Manager User Guide
For 3Par T800 and F400 series
Parameter
host mode
Parameter Setting
generic-legacy (or generic)
For 3Par V800 and V400 series
Parameter
host mode
Parameter Setting
generic-legacy
The volumes in which "Dynamic optimization" or "Adaptive optimization" is
applied must not be used as the external volume of VSP; otherwise the
performance of the external volume may possibly be degraded and the
operation cannot be guaranteed.
Storage system with a product name displayed as
"(Generic)"
The generic Universal Volume Manager profile (available with 70-04-x)
provides support for connecting Fibre channel attached, external storage
systems without testing them individually. It will automatically support
storage systems that conform to a subset of the standard SCSI Primary
Commands. (If you need further information, please contact the Hitachi
Data Systems Support Center). An HDS representative can perform a stepwise process to install and connect external storage. These steps (defined
below) follow a standard process to ensure that no obvious problems exist
in the virtualization. Updating a VSP to the minimum firmware level 70-050x automatically installs the generic UVM profile and makes it available.
Support conditions when product name displays as “(Generic)”
When an external storage system is connected to a VSP and is supported
with the generic UVM profile, the following support conditions exist.
•
Vendor name that corresponds to the external storage system is
displayed.
•
Product name is displayed as “Generic”.
Note: If multiple generic storage systems of the same vendor are
connected, they are displayed as a single storage system. As a result,
if Disconnect External Storage Systems or Reconnect External
Storage Systems is run for generic storage systems, all the generic
storage system volumes are disconnected or reconnected. For
disconnecting or reconnecting a particular generic storage system
volume, the best practice is to run the command in the external volume
unit rather than the external storage system unit.
•
Serial number is not displayed.
•
Characteristic1(device information). LUN assigned to the path with
the highest priority is displayed.
•
Path Mode and Load Balance Mode. Load Balance Mode is set to
Disable by default. Three Path Mode settings are available:
Supported external storage systems
Hitachi Virtual Storage Platform Hitachi Universal Volume Manager User Guide
A–17
a. Normal Round-robin (For Multi Path)
b. Extended Round-robin (For Multi Path)
c. Disable (For Single Path and ALUA)
By default, Load Balance Mode is set to Disable for the generic UVM
profile. As a result, UVM uses Single Mode (Active/Passive). If the
attached external storage supports Multi pathing (Active/Active), the
Load Balance Mode setting must be changed to Extended Round-robin
or Normal Round-robin.
The Load Balance Mode can be changed in the Add External Volumes
window of Storage Navigator.
Note: If you need a profile that models your specific storage system,
please contact the Hitachi Data Systems Support Center. HDS will gather
the required information and may provide the requested profile in a
microcode update. Upgrading to the new microcode will allow the Universal
Volume Manager to display the vendor name, product name, serial number,
and path mode of the external volumes.
A–18
Supported external storage systems
Hitachi Virtual Storage Platform Hitachi Universal Volume Manager User Guide
Virtualization support requirements
•
The external storage system conforms to SCSI Primary commands
(SPC-3).
•
Inquiry page 0x83 contains device identifier 2h (EUI-64-based) or 3h
(NAA).
•
The alternate path mode is not Active/Standby. (Active/Standby is a
Single Mode much like Active/Passive, but it does not failover
automatically.)
•
A profile specific to the storage system does not exist.
•
A special device driver or path manager is not required to control the
external storage system.
•
All other restrictions referenced in this guide apply to virtualization
specifications.
Suggested virtualization procedure
1. Set up VSP External ports.
2. Connect the external storage FC ports to the VSP External ports.
3. Virtualize at least four LUNs from the external storage.
- If virtualization fails, please contact the Hitachi Data Systems Support
Center.
4. Connect two FC ports of the VSP to two HBAs of the server.
5. Provision the ELUNs mapped to the LUNs (step 3) on the ES to the UVM
FC ports.
6. Run an I/O generator to the virtualized LUNs. IOMETER or VDBENCH can
be used.
a. Delete the external path of the highest priority during the I/O.
b. Add the external path as the highest priority during the I/O.
7. Stop the I/O.
Note: The collection of information is optional but recommended. HDS
asks that if new branded storage is attached that the local HDS
representative collect the required data to send to Hitachi. After reviewing
the data, Hitachi will add the External Storage Model to a listing of
supported models on the HDS website. Hitachi may also provide a profile
that models your specific storage system. You have the option of continuing
to use the external storage system or waiting for your customized profile.
If the required data is not provided, HDS support may be limited until the
data is sent to Hitachi.
Supported external storage systems
Hitachi Virtual Storage Platform Hitachi Universal Volume Manager User Guide
A–19
A–20
Supported external storage systems
Hitachi Virtual Storage Platform Hitachi Universal Volume Manager User Guide
B
Remote command devices
This topic provides information for mapping to command devices in external
storage systems.
□
Overview of remote command devices
□
Storage systems supported for remote command devices
□
Requirements
□
Restrictions and other information
□
Mapping a command device
Remote command devices
Hitachi Virtual Storage Platform Hitachi Universal Volume Manager User Guide
B–1
Overview of remote command devices
You can map to a volume used as a command device in an external system.
From the local system, the mapped command device volume becomes a
remote command device.
From an OPEN-systems host connected to the local system, you can send
Command Control Interface (CCI) commands to the remote command
device, which relays them to the external system where they are executed.
This is shown in the following figure.
Figure B-1 Outline of remote command device
See the Command Control Interface User and Reference Guide for
information about command devices.
Storage systems supported for remote command devices
You can map a command device in one of the following external storage
system as a remote command device in VSP:
B–2
•
Virtual Storage Platform G1000
•
Unified Storage VM
•
Virtual Storage Platform
•
Universal Storage Platform V
•
Universal Storage Platform VM
Remote command devices
Hitachi Virtual Storage Platform Hitachi Universal Volume Manager User Guide
•
SANRISE Universal Storage Platform
•
SANRISE Network Storage Controller
•
Unified Storage
•
Adaptable Modular Storage
•
Workgroup Modular Storage
•
SANRISE9900V series
•
SANRISE9500V series
•
TagmaStore Universal Storage Platform
•
TagmaStore Network Storage Controller
•
Lightning 9900V series
•
Thunder 9500V series
•
Virtual Storage Platform VX7
•
VP9500
•
H24000
•
H20000
•
SANRISE H12000
•
SANRISE H10000
•
SANRISE H1024/H128
•
HP XP7 Storage
•
P9500
•
XP24000
•
XP20000
•
XP12000
•
XP10000
•
XP1024/XP128
Requirements
The following table shows requirements for mapping a command device as
a remote command device.
Table B-1 Restrictions on remote command device
Item
Requirement
Emulation type
OPEN-V
Number of LDEVs in an external volume
1
Cache mode
Disable
Minimum capacity
96,000 Blocks (about 47 MB)
Maximum capacity
4TB
Maximum number of the available CCI
instances per remote command device
16*
Remote command devices
Hitachi Virtual Storage Platform Hitachi Universal Volume Manager User Guide
B–3
Item
Requirement
* Maximum number of available CCI instances may be less than 16, dependent upon
the number of paths between a local storage system and an external storage system.
Restrictions and other information
Before mapping a command device as a remote command device, note the
following information.
•
The remote command device cannot be identified by port discovery or
volume discovery process that takes place during the mapping
operation.
•
When an external storage system (A) has a remote command device (B)
(that is, when a command device in another external storage system (C)
is mapped to this external storage system (A)), make sure that the
remote command device (B) does not have the smallest LUN on the port
in the external storage system (A).
•
You cannot execute I/O to the remote command device.
•
You cannot set command device disable on the remote command device.
•
You cannot set command device security on the remote command
device.
•
Do not set the command device security on the external storage system
side for the command device that is mapped as a remote command
device.
•
You cannot create a LUSE volume using a remote command device.
•
You cannot create CVs using the VLL function in the remote command
device.
•
Cache Residency Manager is not available on the remote command
device.
•
Command device information reported to the local host by the remote
command device includes the following:
Serial number
Vendor
Device name. The name displayed for many individual storage
system is listed in Supported external systems’ path mode for
external volumes on page 2-15.
•
Errors can occur when operations are performed on the remote
command device, even though the status of the remote command
device is normal. In this case, check the status of the command device
on the external storage system where the error actually exists.
Mapping a command device
To map a command device, select a command device that can be mapped
and follow the procedure in Mapping an external volume on page 4-5.
B–4
Remote command devices
Hitachi Virtual Storage Platform Hitachi Universal Volume Manager User Guide
When mapped, the remote command device appears in the Storage
Navigator Mapped Volumes window, Device Name column as follows:
Displayed information in Device
Name column
Storage system
Virtual Storage Platform G1000
Format: "Emulation Type" + "-CM"
Unified Storage VM
Example: OPEN V-CM, OPEN-3-CM
Virtual Storage Platform
Universal Storage Platform V
Universal Storage Platform VM
SANRISE Universal Storage Platform
SANRISE Network Storage Controller
SANRISE9900V series
TagmaStore Universal Storage Platform
TagmaStore Network Storage Controller
Lightning 9900V series
Virtual Storage Platform VX7
VP9500
H24000
H20000
SANRISE H12000
SANRISE H10000
SANRISE H1024/H128
XP7 Storage
P9500
XP24000
XP20000
XP12000
XP10000
XP1024/XP128
Unified Storage
DF600F-CM
Adaptable Modular Storage
Workgroup Modular Storage
SANRISE9500V series
Thunder 9500V series
Remote command devices
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B–5
B–6
Remote command devices
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C
Command Control Interface command
reference
This topic lists Command Control Interface (CCI) commands that
correspond to the Actions you select in Storage Navigator.
□
Storage Navigator Action names and CCI commands
Command Control Interface command reference
Hitachi Virtual Storage Platform Hitachi Universal Volume Manager User Guide
C–1
Storage Navigator Action names and CCI commands
The following table compares Actions you take in Storage Navigator and
corresponding CCI commands.
SN location
External
Storages
SN Action name
CCI command
Add External Volumes
raidcom add external_grp
Delete External Volumes
raidcom delete external_grp
Disconnect External Storage
Systems
raidcom disconnect external_grp
Reconnect External Storage
Systems
raidcom check_ext_storage
external_grp
Edit External Volumes
raidcom modify external_grp
Assign MP Blade
raidcom modify external_grp
Disconnect External Volumes
raidcom disconnect external_grp
Reconnect External Volumes
raidcom check_ext_storage
external_grp
Disconnect External Paths
raidcom disconnect path
Reconnect External Paths
raidcom check_ext_storage path
Edit External Path Configuration
raidcom add path
raidcom delete path
C–2
Command Control Interface command reference
Hitachi Virtual Storage Platform Hitachi Universal Volume Manager User Guide
D
Universal Volume Manager GUI
reference
This appendix describes Storage Navigator windows, dialog boxes, and
fields related to Universal Volume Manager.
□
External Storages window
□
Selected external storage system window
□
Selected external path group window
□
Add External Volumes wizard
□
Edit Policies window
□
Edit External Volumes wizard
□
Edit External Path Configuration wizard
□
Edit External WWNs wizard
□
Delete External Volumes wizard
□
Disconnect External Paths wizard
□
Reconnect External Paths wizard
□
Discover External Target Ports window
□
Create External Path Group window
□
Change Settings window
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D–1
D–2
□
View External LUN Properties window
□
Reconnect External Storage Systems window
□
Reconnect External Volumes window
□
Disconnect External Storage Systems window
□
Disconnect External Volumes window
□
Assign Processor Blade wizard
□
External LDEV Properties window
Universal Volume Manager GUI reference
Hitachi Virtual Storage Platform Hitachi Universal Volume Manager User Guide
External Storages window
Use this window to view external storage systems.
You can perform these operations from the window:
•
Mapping an external volume on page 4-5
•
Editing mapping policies on page 5-3
•
Disconnecting an external path on page 5-9
•
Reconnecting an external path on page 5-10
Information areas in this window:
•
Summary on page D-4
•
External Storage Systems tab on page D-4
•
External Paths tab on page D-5
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D–3
Summary
Displays summary information for external storage.
Item
Description
Number of External
Storage Systems
Number of external storage systems in which mapped
external volumes reside.
Number of External Paths
Number of external paths.
Number of External
Volumes
Number of mapped external volumes.
External Volume Capacity
Total capacity of mapped external volumes.
External Storage Systems tab
Displays the external storage systems in which mapped external volumes
reside.
Item
Vendor / Model / Serial
Number
Description
Identifying information for the selected external storage
system.
When the link is clicked, more information for the system
is shown.
Status
D–4
Any of the following statuses can display for the external
system.
•
Normal: There are no problems, the system is usable.
•
Disconnect: The external system or one of its
mapped volumes has been intentionally disconnected.
•
Checking: The system is checking the mapping path
status.
•
Unknown: The status of the mapping path is not
known.
•
Cache Destage: Writing of data from cache memory
to the volume is in progress.
•
Warning: There are mapping paths whose status is
not normal. You can check their status in the View
External LUN Properties window.
•
Blockade: The mapping path is blocked.
•
Destage Failed: The writing of data from cache
memory to the volume failed.
Number of External Path
Groups
Number of external path groups in the external system.
Add External Volumes
When clicked, launches the Add External Volumes
window.
Disconnect External
Storage Systems
When clicked, launches the Disconnect External
Storage Systems window.
Reconnect External
Storage Systems
When clicked, launches the Reconnect External Storage
Systems window.
Edit Policies*
When clicked, launches the Edit Policies window.
Export*
When clicked, allows you to save table information to a file.
Universal Volume Manager GUI reference
Hitachi Virtual Storage Platform Hitachi Universal Volume Manager User Guide
Item
Description
* Appears when you click More Actions.
External Paths tab
Displays the paths connecting mapped external volumes in the external
system to VSP.
Item
Description
Port ID
Local system port number.
External WWN
External system port identification number.
Vendor / Model / Serial
Number
Identifying information for the external system.
Status
Status of external paths.
•
Normal: There are no problems, the system is usable.
•
Disconnect: The path has been intentionally
disconnected.
•
Checking: The system is checking the external path
status.
•
Unknown: The status of the external path is not
known.
•
Warning: There are external paths whose status is
not normal. You can check their status in the View
External LUN Properties window.
•
Blockade: The external path is blocked.
QDepth
Number of Read/Write commands that can be queued to
the external volume. 8 is set by default.
I/O Timeout (sec.)
Number of seconds that should pass before I/O to the
external volume times out. 15 seconds is the default.
Path Blockade Watch(sec.) Time that will elapse from the time that a path goes down
to the time when the external volume is blocked. 10
seconds is the default.
Disconnect External Paths
When clicked, launches the Disconnect External Paths
window.
Reconnect External Paths
When clicked, launches the Reconnect External Paths
window.
Edit External WWNs
When clicked, launches the Edit External WWNs window.
Edit Policies*
When clicked, launches the Edit Policies window.
Export*
When clicked, allows you to save table information to a file.
* Appears when you click More Actions.
Selected external storage system window
Use this window to view information about the selected external storage
system.
You can perform these operations from the window:
•
Mapping an external volume on page 4-5
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D–5
•
Adding an external path to an existing path group on page 5-8
•
Changing external path priority on page 5-9
•
Removing, replacing an external path on page 5-12
•
Editing external volume policies (settings) on page 5-2
•
Export table information to a file.
Information areas in this window:
•
Summary on page D-6
•
External Path Groups tab on page D-7
Summary
Displays summary information about the selected external storage.
D–6
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Item
Status
Description
Status of external storage systems.
•
Normal: There are no problems, the system is usable.
•
Disconnect: The external system or one of its
mapped volumes has been intentionally disconnected.
•
Checking: The system is checking the mapping path
status.
•
Unknown: The status of the mapping path is not
known.
•
Cache Destage: Writing of data from cache memory
to the volume is in progress.
•
Warning: There are mapping paths whose status is
not normal. You can check their status in the View
External LUN Properties window.
•
Blockade: The mapping path is blocked.
•
Destage Failed: The writing of data from cache
memory to the volume failed.
Vendor / Model / Serial
Number
Identifying information for the external system.
Number of External Path
Groups
Number of external path groups in the external system.
Number of External
Volumes
Number of mapped external volumes.
External Volume Capacity
Total capacity of mapped external volumes.
External Path Groups tab
Displays the external path groups in which external paths are grouped.
Item
External Path Group ID
Description
Name of the external path group.
When the link is clicked, the list of the group’s external
paths displays.
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D–7
Item
Status
Description
Status of external path groups.
•
Normal: There are no problems, the path group is
usable.
•
Disconnect: The path group has been intentionally
disconnected.
•
Checking: The system is checking the mapping path
status.
•
Unknown: The status of the mapping path is not
known.
•
Cache Destage: The writing of data from cache
memory to the external volume is in progress.
•
Warning: There are mapping paths whose status is
not normal. You can check their status in the View
External LUN Properties window.
•
Blockade: The mapping path is blocked.
•
Destage Failed: The writing of data from cache
memory to the volume is failed.
Top Path
Highest priority external path.
Port ID
Local system port number.
External WWN
External system port identification number.
Number of External Paths
Number of external paths in the path group.
Number of External
Volumes
Number of external volumes using the external path
group.
Add External Volumes
When clicked, launches the Add External Volumes
window.
Edit External Path
Configuration
When clicked, launches the Edit External Path
Configuration window.
Edit Policies
When clicked, launches the Edit Policies window.
Export
When clicked, allows you to save table information to a file.
Selected external path group window
Use this window to view the mapped external volumes using the external
path, and view the external paths in the path group.
You can perform these operations from the window.
D–8
•
Mapping an external volume on page 4-5
•
Edit Cache Mode and Inflow Control settings for individual mapped
volumes (see Editing mapping policies on page 5-3)
•
View path status and external LUN information (see the Status
description in the External Storage Systems tab on page D-4 section.)
•
Deleting an external volume mapping on page 5-21
•
Disconnecting a single mapped volume on page 5-16
•
Reconnecting a single mapped volume on page 5-19
•
Changing external volume processor blade on page 5-4
Universal Volume Manager GUI reference
Hitachi Virtual Storage Platform Hitachi Universal Volume Manager User Guide
•
Editing external volume policies (settings) on page 5-2
•
Export table information to a file (see the Export button description in
External Storage Systems tab on page D-4 section.)
Information areas in this window:
•
Summary on page D-9
•
Mapped Volumes tab on page D-10
•
External Paths tab on page D-13
Summary
Displays summary information about the selected external path group.
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D–9
Item
Status
Description
Status of path groups.
•
Normal: There are no problems, the path group is
usable.
•
Disconnect: The path group has been intentionally
disconnected.
•
Checking: The system is checking the mapping path
status.
•
Unknown: The status of the mapping path is not
known.
•
Cache Destage: The writing of data from cache
memory to the external volume is in progress.
•
Warning: There are mapping paths whose status is
not normal. You can check their status in the View
External LUN Properties window.
•
Blockade: The mapping path is blocked.
•
Destage Failed: The writing of data from cache
memory to the volume is failed.
Vendor / Model / Serial
Number
Identifying information for the external system.
Number of External Paths
Number of external paths in the external path group.
Number of External
Volumes
Number of mapped external volumes using the external
path group.
External Volume Capacity
Total capacity of mapped external volumes using the path
group.
Mapped Volumes tab
Displays the external volumes mapped to the VSP using the selected path
group.
Item
Parity Group ID
Description
Displays parity group numbers for the mapped external
volumes. When the link is clicked, a list of LDEVs in the
mapped volume and parity group displays.
When the link is clicked, a list of LDEVs in the mapped
volume and parity group displays.
D–10
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Item
Status
Description
Status of the external volume
•
Normal: There are no problems, the volume is usable.
•
Disconnect: The external system or one of its
mapped volumes has been intentionally disconnected.
•
Checking: The system is checking the mapping path
status
•
Unknown: The status of the mapping path is not
known.
•
Cache Destage: Writing of data from cache memory
to the volume is in progress.
•
Warning: There are mapping paths whose status is
not normal. You can check their status in the View
External LUN Properties window.
•
Blockade: The mapping path is blocked.
•
Destage Failed: The writing of data from cache
memory to the volume failed.
Top LDEV ID
External volume’s top LDEV ID.
Top LDEV Name
External volume’s top LDEV name.
Device Name
Product ID of Standard Inquiry. This is the name defined
by the standard body that controls SCSI. This name varies
according to the storage system vendor. For example, for
Hitachi enterprise storage, this field displays the emulation
type.
Number of LDEVs
Number of LDEVs created in the external volume.
Capacity
Capacity of the external volume.
Characteristic1
Identification number of the external volume.
The value is used by UVM to identify the LUN across
multiple paths. The value is provided by the external
system and may reflect internal numbering.
Characteristic2
Identification number of the external volume.
Drive Info
Information about the external volume’s drive type.
SATA displays when the external volume is a SATA drive
of following storage systems.
•
VSP
•
Universal Storage Platform V/VM
•
HUS/AMS/WMS
•
SMS
•
Thunder 9500V
SSD displays when the external volume is the SSD of
following storage systems.
MP Blade ID
•
VSP G1000
•
VSP
•
HUS VM
•
Universal Storage Platform V/VM
Processor blade IDs allocated to the external volume.
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D–11
Item
Path Mode
Description
Path mode for the external volume’s external path.
•
Single: One path is used for I/O to the external
volume, with alternate paths available in case of
failure.
•
Multi: Multiple paths are used at the same time.
•
APLB: Like Multi, all paths are used; however, they are
not used when connected to ports in Passive status.
See External paths on page 2-12 for more information.
Load Balance Mode
Displays I/O load balance system for external storage
system.
•
Normal Round-robin: Performs load balance in
round-robin system.
•
Extended Round-robin: Load balance system is
automatically switched for sequential I/O and random
I/O.
•
Disable: Performs I/O operation with a single path,
without load balance.
•
A hyphen (-) displays when the Path mode is Single.
Cache Mode
Write data from the host to the external system is
propagated synchronously (Disable) or asynchronously
(Enable). When the attribute Nondisruptive Migration is
selected, - is displayed.
Inflow Control
Write operation to cache memory is limited (Enable) or
continued (Disable) when the write operation to the
external volume cannot be performed.
Attribute
Displays an attribute of the parity group.
•
Nondisruptive Migration: The parity group is set to
nondisruptive migration.
•
- (hyphen): Parity group whose attribute is not set.
Add External Volumes
Displays the Add External Volumes window.
Edit External Volumes
Displays the Edit External Volumes window.
View External LUN
Properties
View external system LUN information for the external
volume, as well as external and mapping path information
in the Displays the View External LUN Properties
window.
Delete External Volumes*
When clicked, launches the Delete External Volumes
window.
Disconnect External
Volumes
When clicked, launches the Disconnect External
Volumes window.
Reconnect External
Volumes
When clicked, launches the Reconnect External
Volumes window.
Assign MP Blade*
When clicked, launches the Assign Processor Blade
window.
Edit Policies*
When clicked, launches the Edit Policies window.
Export*
When clicked, allows you to save table information to a file.
* Appears when you click More Actions.
D–12
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External Paths tab
Displays the external paths within the selected path group.
Item
Description
Priority
Priority of external paths.
Port ID
Local system port number.
External WWN
External system port identification number.
Status
Status of external paths.
•
Normal: There are no problems, the system is usable.
•
Disconnect: The path has been intentionally
disconnected.
•
Checking: The system is checking the external path
status.
•
Unknown: The status of the external path is not
known.
•
Warning: There are external paths whose status is
not normal. You can check their status in the View
External LUN Properties window.
•
Blockade: The external path is blocked.
QDepth
Number of Read/Write commands that can be queued to
the external volume. 8 is set by default.
I/O Timeout (sec.)
Number of seconds that should pass before I/O to the
external volume times out. 15 seconds is the default.
Path Blockade Watch(sec.) Time that will elapse from the time that a path goes down
to the time when the external volume is blocked. 10
seconds is the default.
Edit External Path
Configuration
When clicked, launches the Edit External Path
Configuration window.
Edit Policies*
When clicked, launches the Edit Policies window.
Export*
When clicked, allows you to save table information to a file.
Add External Volumes wizard
Use this wizard to connect external volumes to VSP.
See Mapping an external volume on page 4-5 for instructions.
Each window in the wizard is identified below the wizard title. The windows
are:
•
Select External Path Group window on page D-13
•
Add External Volumes window on page D-14
•
Confirm window on page D-21
Select External Path Group window
Part of the Add External Volumes wizard, use this window to select and set
parameters for an external path group.
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D–13
Item
By New External Path
Group.
Description
Option for setting up a new external path group.
Create External Path Group When clicked, launches the Create External Path Group
window.
External Path Group ID
Number to identify the new external path group.
By Existing External Path
Group.
Option for using an existing external path group.
Storage system button
When clicked, displays a list of external systems.
Available External Path
Groups
External path groups for the ports assigned to the user.
External Path Group ID
Name of the external path group.
External Path (Highest
Priority)
External path in the path group with the highest priority.
Port ID
Local system port number.
External WWN
External system port identification number.
Vendor / Model / Serial
Number
Identifying information for the external system.
Number of Paths
Number of external paths in the path group.
Add External Volumes window
Part of the Add External Volumes wizard, use this window to select and set
parameters for external volumes.
Sections in this window:
D–14
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•
Discovered External Volumes on page D-15
•
Selected External Volumes on page D-18
•
Confirm window on page D-26
Discovered External Volumes
Displays discovered external volumes.
Item
Description
Discovered External Volumes
Volumes in the external system associated with the
external port side of the external path and path group.
LUN ID(Highest Priority)
The external LUN with the highest priority.
"?" indicates that an external volume is not found. In
this case, confirm the connection with the external
system, and then perform the operation again.
Device Name
Name of the storage system reported to the host by the
external volume. The displayed name differs by vendor.
For some Hitachi enterprise storage, this field displays
emulation type.
Capacity
External volume capacity.
Characteristic1
Identification number of the external volume.
The value is used by UVM to identify the LUN across
multiple paths. The value is provided by the external
system and may reflect internal numbering.
Characteristic2
Identification number of the external volume.
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D–15
Item
Drive Info
Description
Information about the external volume’s drive type.
SATA displays when the external volume is a SATA
drive of following storage systems.
•
VSP
•
Universal Storage Platform V/VM
•
HUS/AMS/WMS
•
SMS
•
Thunder 9500V
SSD displays when the external volume is the SSD of
following storage systems.
Path Mode
•
VSP G1000
•
VSP
•
HUS VM
•
Universal Storage Platform V/VM
Displays operation mode of the external path.
Discovery Result
•
Single: Ordinarily, external paths that are set from
only one port are used even if alternate paths are
set, In Single mode, alternate paths are operated
only in case of maintenance work failure.
•
Multi: When alternate paths are set, external
paths from several ports are simultaneously used
with load balancing.
•
APLB: When alternate paths are set, external
paths from several ports are simultaneously used
with load balancing. External paths that are
connected to ports in Passive status are not used.
Displays one of the following:
•
Normal
•
An error code
When clicked, the link displays the Discovery Result
Detail window with details of the search.
D–16
Initial Parity Group ID
An external volume group number and sequence
number. Values range from 1 - 1 (default) to 16384 4096.
Allow Simultaneous Creation
of LDEVs
LDEVs are automatically created in the internal volume
when Yes is selected. If No is selected, you must create
LDEV’s manually.
Use External Storage System
Configuration
If Yes is specified in “Allow Simultaneous Creation of
LDEVs”, the external volume’s configuration for the
LDEVs is used when Yes is selected. If No is selected,
you must configure LDEV’s manually.
Universal Volume Manager GUI reference
Hitachi Virtual Storage Platform Hitachi Universal Volume Manager User Guide
Item
LDEV Name
Description
Requires a prefix character and initial number, 32
characters maximum (including the initial number).
Numbering rule for Initial Number:
1: total 9 numbers (1,2,3,…9)
08: total 92 numbers (08,09,10,…99)
23: total 77 numbers (23,24,25,…99)
098: total 902 numbers (098,099,100…999)
Options
Optional default settings for the external volume.
Options can be affected by values entered in previous
fields.
Initial LDEV ID
VSP searches from this number in ascending order and
allocates the next available LDEV ID to the external
volume. Ranges for each item:
•
LDKC: 00
•
CU: From 00 (default) to FE.
•
DEV: The LDEV ID. From 00 (default) to FF.
•
Interval: Interval between LDEV IDs. From 0
(default) to 255.
View LDEV IDs
Shows used, available, and disabled LDEV IDs.
Initial SSID
SSID number. Range can be from 0004 (default) to
FFFE.
View SSID
Shows current SSIDs.
Base Emulation Type
External system’s emulation type. All supported
emulation types except OPEN-L can be specified. See
Editing external volume policies (settings) on page 5-2
for more information.
Number of LDEVs per External Number of LDEVs to be created in the local system
Volume
when the volume is mapped. Depends on base
emulation type.
Cache Partition
CLPR for accessing the external volume.
See Editing external volume policies (settings) on page
5-2 for more information.
Cache Mode
•
Enable: Write data from the host is propagated
asynchronously
•
Disable: Write data from the host is propagated
synchronously
See Cache use and external storage performance on
page 2-6 for more information.
Inflow Control
•
Enable: Limits or prevents write data from being
written to cache memory when the write operation
cannot be performed.
•
Disable: Allows write data to be written to cache
when the write operation cannot be performed.
See Editing external volume policies (settings) on page
5-2 for more information.
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D–17
Item
Load Balance Mode
Description
Select I/O load balance system for external storage
system.
•
Normal Round-robin: Performs load balance in
round-robin system.
•
Extended Round-robin: Load balance system is
automatically switched for sequential I/O and
random I/O.
•
Disable: Performs I/O operation with a single
path, without load balance.
The default is the value set in the Edit Policies window.
If the product name of an external storage system is
displayed as "(generic)", Disable is used by default.
When the path mode of the external volume is Single,
this item cannot be selected.
Processor Blade
Add
Processor blade for the external volume.
•
Range is from MPB0 to MPB7.
•
Auto (default): Blade is automatically selected by
the system.
•
Blade with lowest number is used when Auto
cannot be selected.
When clicked, moves selected volumes to the Selected
External Volumes list.
Selected External Volumes
Displays selected external volumes.
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Hitachi Virtual Storage Platform Hitachi Universal Volume Manager User Guide
Item
Description
LUN ID(Highest Priority)
External volume’s LUN with the highest priority.
Device Name
Name of the storage system reported to the host by the
external volume. The displayed name differs by vendor.
For some Hitachi enterprise storage, this field displays
emulation type.
Characteristic1
Identification number of the external volume.
The value is used by UVM to identify the LUN across
multiple paths. The value is provided by the external
system and may reflect internal numbering.
Characteristic2
External volume’s identification number.
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Hitachi Virtual Storage Platform Hitachi Universal Volume Manager User Guide
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Item
Drive Info
Description
Information about the external volume’s drive type.
SATA displays when the external volume is a SATA
drive of following storage systems.
•
VSP
•
Universal Storage Platform V/VM
•
HUS/AMS/WMS
•
SMS
•
Thunder 9500V
SSD displays when the external volume is the SSD of
following storage systems.
VSP G1000
•
VSP
•
HUS VM
•
Universal Storage Platform V/VM
Parity Group ID
Parity group numbers.
Base Emulation Type
External volume’s emulation type.
Top LDEV ID
External volume’s top LDEV ID.
Top LDEV Name
External volume’s top LDEV name.
Number of LDEVs
External volume’s number of LDEVs.
Capacity
External volume’s capacity.
SSID
SSIDs.
CLPR
CLPR used for accessing to the mapped external
volume.
Path Mode
Displays operation mode of the external path.
Load Balance Mode
D–20
•
•
Single: Ordinarily, external paths that are set from
only one port are used even if alternate paths are
set, In Single mode, alternate paths are operated
only in case of maintenance work failure.
•
Multi: When alternate paths are set, external
paths from several ports are simultaneously used
with load balancing.
•
APLB: When alternate paths are set, external
paths from several ports are simultaneously used
with load balancing. External paths connected to
ports in Passive status are not used.
Displays I/O load balance system for external storage
system.
•
Normal Round-robin: Performs load balance in
round-robin system.
•
Extended Round-robin: Load balance system is
automatically switched for sequential I/O and
random I/O.
•
Disable: Performs I/O operation with a single
path, without load balance.
•
A hyphen (-) displays when the Path mode is
Single.
Universal Volume Manager GUI reference
Hitachi Virtual Storage Platform Hitachi Universal Volume Manager User Guide
Item
Description
MP Blade ID
External volume’s processor blade IDs.
Change Settings
When clicked, the Change Setting dialog box opens.
Remove
When clicked, removes external volumes from the
Selected External Volumes table.
Edit SSIDs*
When clicked, opens the Change SSIDs dialog box.
Path Detail*
When clicked, opens the View External LUN Properties
dialog box.
Next Task Option
When clicked, opens the Select LDEV window.
* Appears when you click More Actions.
Confirm window
Item
Description
Task Name
Identifies the operation within the system when Apply
is clicked. Allows you to track the status of the
operation.
External Path Group ID
Name of the external path group.
Vendor / Model / Serial
Number
Identifying information for the external system.
Priority
Priority of external paths.
Port ID
Local system port number.
External WWN
External system port identification number.
LUN ID(Highest Priority)
The LUN which is connected to the external path with
the highest priority.
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Hitachi Virtual Storage Platform Hitachi Universal Volume Manager User Guide
D–21
Item
Description
Device Name
Name of the storage system reported to the host by the
external volume. The displayed name differs by vendor.
For some Hitachi enterprise storage, this field displays
emulation type.
Capacity
External volume capacity.
Characteristic1
Identification number of the external volume.
The value is used by UVM to identify the LUN across
multiple paths. The value is provided by the external
system and may reflect internal numbering.
Characteristic2
Identification number of the external volume.
Drive Info
Information about the external volume’s drive type.
SATA displays when the external volume is a SATA
drive of following storage systems.
•
VSP
•
Universal Storage Platform V/VM
•
HUS/AMS/WMS
•
SMS
•
Thunder 9500V
SSD displays when the external volume is the SSD of
following storage systems.
D–22
•
VSP G1000
•
VSP
•
HUS VM
•
Universal Storage Platform V/VM
Parity Group ID
Parity group numbers.
Base Emulation Type
External volume’s emulation type.
Top LDEV ID
External volume’s top LDEV ID.
Top LDEV Name
External volume’s top LDEV name.
Number of LDEVs
External volume’s number of LDEVs.
Capacity
External volume’s capacity.
SSID
SSIDs.
CLPR
CLPR used for accessing to the mapped external
volume.
Path Mode
Displays operation mode of the external path.
•
Single: Ordinarily, external paths that are set from
only one port are used even if alternate paths are
set, In Single mode, alternate paths are operated
only in case of maintenance work failure.
•
Multi: When alternate paths are set, external
paths from several ports are simultaneously used
with load balancing.
•
APLB: When alternate paths are set, external
paths from several ports are simultaneously used
with load balancing. External paths connected to
ports in Passive status are not used.
Universal Volume Manager GUI reference
Hitachi Virtual Storage Platform Hitachi Universal Volume Manager User Guide
Item
Load Balance Mode
Description
Displays I/O load balance system for external storage
system.
•
Normal Round-robin: Performs load balance in
round-robin system.
•
Extended Round-robin: Load balance system is
automatically switched for sequential I/O and
random I/O.
•
Disable: Performs I/O operation with a single
path, without load balance.
•
A hyphen (-) displays when the Path mode is
Single.
MP Blade ID
External volume’s processor blade IDs.
LDEV Detail
External volume’s LDEV details.
Note: Information in this Confirm window assumes only a single task is
executed. If multiple tasks are executed, the window displays all
configuration items. For information on these items, return to the
configuration window by clicking Back and refer to the topic on each
configuration window by clicking Help.
Edit Policies window
Use this window to change settings for mapped external volumes.
See Editing external volume policies (settings) on page 5-2 for information.
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Hitachi Virtual Storage Platform Hitachi Universal Volume Manager User Guide
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Item
Description
Allow Simultaneous Creation
of LDEVs
LDEVs are automatically created in the internal volume
when Yes is selected. If No is selected, you must create
LDEV’s manually.
Use External Storage System
Configuration
If Yes is specified in “Allow Simultaneous Creation of
LDEVs”, the external volume’s configuration for the
LDEVs is used when Yes is selected. If No is selected,
you must configure LDEV’s manually.
Base Emulation Type
External system’s emulation type. All supported
emulation types except OPEN-L can be specified. See
Editing external volume policies (settings) on page 5-2
for more information.
Number of LDEVs per External Number of LDEVs to be created in the local system
Volume
when the volume is mapped. Depends on base
emulation type.
Cache Partition
CLPR for accessing the external volume.
See Editing external volume policies (settings) on page
5-2 for more information.
Cache Mode
•
Enable: Write data from the host is propagated
asynchronously
•
Disable: Write data from the host is propagated
synchronously
See Cache use and external storage performance on
page 2-6for more information.
Inflow Control
•
Enable: Limits or prevents write data from being
written to cache memory when the write operation
cannot be performed.
•
Disable: Allows write data to be written to cache
when the write operation cannot be performed.
See Editing external volume policies (settings) on page
5-2 for more information.
Load Balance Mode
Select I/O load balance system for external storage
system.
•
Normal Round-robin: Performs load balance in
round-robin system.
•
Extended Round-robin: Load balance system is
automatically switched for sequential I/O and
random I/O.
•
Disable: Performs I/O operation with a single
path, without load balance.
The default is Normal Round-robin.
Processor Blade
Internal Volume Usage
D–24
Processor blade for the external volume.
•
Range is from MPB0 to MPB7.
•
Auto (default): Blade is automatically selected by
the system.
•
Blade with lowest number is used when Auto
cannot be selected.
Specifies whether to use the internal volume as an
external volume (Enable) or not (Disable). The default
is Disable.
Universal Volume Manager GUI reference
Hitachi Virtual Storage Platform Hitachi Universal Volume Manager User Guide
Edit External Volumes wizard
Use this wizard to change settings for a mapped external volume.
The windows in the wizard are:
•
Edit External Volumes window on page D-25
•
Confirm window on page D-26
Edit External Volumes window
Item
Cache Mode
Description
•
Enable: Write data from the host is propagated
asynchronously.
•
Disable: Write data from the host is propagated
synchronously.
•
This mode will be inactive in external volumes
whose attribute is Nondisruptive Migration.
See Cache use and external storage performance on
page 2-6 for more information.
Inflow Control
•
Enable: Limits or prevents write data from being
written to cache memory when the write operation
cannot be performed.
•
Disable: Allows write data to be written to cache
when the write operation cannot be performed.
See Editing external volume policies (settings) on page
5-2 for more information.
Universal Volume Manager GUI reference
Hitachi Virtual Storage Platform Hitachi Universal Volume Manager User Guide
D–25
Item
Load Balance Mode
Description
Select I/O load balance system for external storage
system.
•
Normal Round-robin: Performs load balance in
round-robin system.
•
Extended Round-robin: Load balance system is
automatically switched for sequential I/O and
random I/O.
•
Disable: Performs I/O operation with a single
path, without load balance.
•
A hyphen (-) displays when the Path mode is
Single.
The value that is set for the selected external volume
is used as the default. If two or more external volumes
with different values are selected, the item is placed in
non-selected status. When the Path Mode of the
selected external volume is Single, the item cannot be
selected.
Confirm window
Item
D–26
Description
Parity Group ID
Displays parity group numbers.
Top LDEV ID
External volume’s top LDEV ID.
Top LDEV Name
External volume’s top LDEV name.
Universal Volume Manager GUI reference
Hitachi Virtual Storage Platform Hitachi Universal Volume Manager User Guide
Item
Cache Mode
Description
•
Enable: Write data from the host is propagated
asynchronously
•
Disable: Write data from the host is propagated
synchronously
See Cache use and external storage performance on
page 2-6for more information.
Inflow Control
•
Enable: Limits or prevents write data from being
written to cache memory when the write operation
cannot be performed.
•
Disable: Allows write data to be written to cache
when the write operation cannot be performed.
See Editing external volume policies (settings) on page
5-2 for more information.
Load Balance Mode
Displays I/O load balance system for external storage
system.
•
Normal Round-robin: Performs load balance in
round-robin system.
•
Extended Round-robin: Load balance system is
automatically switched for sequential I/O and
random I/O.
•
Disable: Performs I/O operation with a single
path, without load balance.
•
A hyphen (-) displays when the Path mode is
Single.
Edit External Path Configuration wizard
Use this wizard to add and remove external paths to a path group, and to
raise and lower path priority.
See Adding an external path to an existing path group on page 5-8 for
instructions.
The windows in the wizard are:
•
Edit External Path Configuration window on page D-28
•
Confirm window on page D-30
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Hitachi Virtual Storage Platform Hitachi Universal Volume Manager User Guide
D–27
Edit External Path Configuration window
Only the external paths that are connected with the port assigned to the
user are displayed.
Item
Description
External Path Group ID
Name of the external path group.
External Paths
External path information.
Discover External Target Ports When clicked, opens the Discover External Target Ports
window, which lists available external ports.
External Storage System
The external system selected (greyed out). If no
system was selected, allows you to select the system
from a list.
Available External Paths
Port ID
Local system port number.
External WWN
External system port identification number.
Add
When clicked, moves selected paths to the Selected
External Paths list.
The following figure shows the Selected External Paths pane in the Edit
External Path Configuration window. The table following the figure
provides descriptions for the items in the pane.
D–28
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Hitachi Virtual Storage Platform Hitachi Universal Volume Manager User Guide
Item
Description
Selected External Paths (see preceding figure)
Remove
When clicked, removes the selected path from the
Selected External Paths list.
Priority
Priority of external paths.
Port ID
Local system port number.
External WWN
External system port identification number.
Raise Priority
Raise the priority of the selected external path.
Lower Priority
Lower the priority of the selected external path.
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Hitachi Virtual Storage Platform Hitachi Universal Volume Manager User Guide
D–29
Confirm window
Item
D–30
Description
Task Name
Identifies the operation within the system when Apply
is clicked. Allows you to track the status of the
operation.
External Path Group ID
Displays the name of the external path group.
Vendor / Model / Serial
Number
Identifying information for the external system.
Priority
Priority of external paths.
Port ID
Local system port number.
External WWN
External system port identification number.
Universal Volume Manager GUI reference
Hitachi Virtual Storage Platform Hitachi Universal Volume Manager User Guide
Edit External WWNs wizard
Use this wizard to change the external system’s WWN port setting.
See Editing external WWN settings on page 5-6 for instructions.
The windows in the wizard are:
•
Edit External WWNs window on page D-31
•
Confirm window on page D-32
Edit External WWNs window
Item
Description
QDepth
Number of Read/Write commands that can be queued
to the external volume. 8 is set by default.
I/O Timeout (sec.)
Number of seconds that should pass before I/O to the
external volume times out. 15 seconds is the default.
Path Blockade Watch(sec.)
Time that elapses from the time that a path goes down
to the time when the external volume is blocked. 10
seconds is the default.
Caution: If you want to change multiple parameters for an external WWN
more than once, wait until the currently applied task finishes, and then
perform the next setting change.
If you perform the setting change for the next task before the currently
applied task finishes, the setting is only applied to the next task. The result
might be different from what you expected.
Universal Volume Manager GUI reference
Hitachi Virtual Storage Platform Hitachi Universal Volume Manager User Guide
D–31
Confirm window
Item
Description
Port ID
Local system port number.
External WWN
External system port identification number.
QDepth
Number of Read/Write commands that can be queued
to the external volume. 8 is set by default.
I/O Timeout (sec.)
Number of seconds that should pass before I/O to the
external volume times out. 15 seconds is the default.
Path Blockade Watch(sec.)
Time that will elapse from the time that a path goes
down to the time when the external volume is blocked.
10 seconds is the default.
Delete External Volumes wizard
Use this wizard to delete external volume mapping.
See Deleting an external volume mapping on page 5-21 for instructions.
The windows in the wizard are:
D–32
•
Delete External Volumes window on page D-33
•
Confirm window on page D-34
Universal Volume Manager GUI reference
Hitachi Virtual Storage Platform Hitachi Universal Volume Manager User Guide
Delete External Volumes window
Item
Description
Parity Group ID
Parity group numbers.
Top LDEV ID
External volume’s top LDEV ID.
Top LDEV Name
External volume’s top LDEV name.
Have you already
•
disconnected external volume
of above table?
•
Do you want to execute Delete •
External Volumes operation
without writing the cache data •
to the volumes?
Yes if you have disconnected the external volume
you want to delete.
No if you have not disconnected the external
volume you want to delete.
Yes to delete the external volumes without writing
the data in cache memory into the volumes.
No (default). If selected, the operation cannot be
completed.
Universal Volume Manager GUI reference
Hitachi Virtual Storage Platform Hitachi Universal Volume Manager User Guide
D–33
Confirm window
Item
Description
Parity Group ID
Parity group numbers.
Top LDEV ID
External volume’s top LDEV ID.
Top LDEV Name
External volume’s top LDEV name.
Forcible Deletion
Yes: The external volume will be forcibly deleted even
if the connection to the external volume has not been
disconnected.
No: The external volume will be deleted after
confirming that the connection to the external volume
is disconnected.
Disconnect External Paths wizard
Use this wizard to disconnect external paths.
See Disconnecting an external path on page 5-9 for instructions.
The windows in the wizard are:
D–34
•
Disconnect External Paths window on page D-35
•
Confirm window on page D-36
Universal Volume Manager GUI reference
Hitachi Virtual Storage Platform Hitachi Universal Volume Manager User Guide
Disconnect External Paths window
Item
Disconnect External Paths
Description
•
By Ports (default): Stops use of all the external
paths connected to the specified port in the local
system.
•
By External WWNs: Stops use of all the external
paths connected to the specified WWNs (ports) in
the external system.
Universal Volume Manager GUI reference
Hitachi Virtual Storage Platform Hitachi Universal Volume Manager User Guide
D–35
Confirm window
Item
Description
Port ID
Local system port number.
External WWN
External system port identification number.
Vendor / Model / Serial
Number
Identifying information for the external system.
Reconnect External Paths wizard
Use this wizard to reconnect external paths.
See Reconnecting an external path on page 5-10 for instructions.
The windows in the wizard are:
D–36
•
Reconnect External Paths window on page D-37
•
Confirm window on page D-37
Universal Volume Manager GUI reference
Hitachi Virtual Storage Platform Hitachi Universal Volume Manager User Guide
Reconnect External Paths window
Item
Reconnect External Paths
Description
•
By Ports (default): Reconnects all external paths
connected to the specified port in the local system.
•
By External WWNs: Reconnects all external paths
connected to the specified WWNs (ports) in the
external system.
Confirm window
Universal Volume Manager GUI reference
Hitachi Virtual Storage Platform Hitachi Universal Volume Manager User Guide
D–37
Selected External Paths table
Item
Description
Port ID
Local system port number.
External WWN
External system port identification number.
Vendor / Model / Serial
Number
Identifying information for the external system.
Discover External Target Ports window
Use this window to add or remove external ports for the external path.
This window is used in the following operations:
•
Mapping an external volume on page 4-5
•
Adding an external path to an existing path group on page 5-8
Only external ports assigned to the user display.
Item
Description
Available External Ports
Port ID
Port number in the local system connecting to the
external system.
Add
When clicked, moves selected paths to the Selected
External Ports list.
Selected External Paths
Remove
When clicked, removes the selected path from the
Selected External Ports list.
Port ID
External system port number used in the external path.
Create External Path Group window
Use this window to create a new external path group.
This window is used in the operation, Mapping an external volume on page
4-5.
D–38
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Hitachi Virtual Storage Platform Hitachi Universal Volume Manager User Guide
Only paths with ports assigned to the user can display.
Item
Initial External Path Group ID
Description
An initial ID for the path group. The storage system
searches IDs in ascending order from this value and
allocates an ID that can be used. The range can be
from 0 to 63,231. 0 is the default.
Discover External Target Ports When clicked, opens the Discover External Target Ports
window.
External Storage System
The external system selected (greyed out). If no
system was selected, allows you to select the system
from a list.
Available External Paths
Port ID
Local system port number.
External WWN
External system port identification number.
Add
When clicked, moves selected paths to the Selected
External Paths list.
The following figure displays the Selected External Paths pane of the
Create External Path Group window.
Universal Volume Manager GUI reference
Hitachi Virtual Storage Platform Hitachi Universal Volume Manager User Guide
D–39
The following table shows the items in the Selected External Paths pane
and their descriptions.
Item
Description
Selected External Paths (see preceding figure)
Remove
When clicked, removes the selected path from the
Selected External Paths list.
Priority
Priority of external paths.
Port ID
Local system port number.
External WWN
External system port identification number.
Raise Priority
When clicked, raises the priority of the selected
external path.
Lower Priority
When clicked, lowers the priority of the selected
external path.
Change Settings window
Use this window to change the settings for selected external volumes.
This window is used in the operation, Mapping an external volume on page
4-5.
D–40
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Hitachi Virtual Storage Platform Hitachi Universal Volume Manager User Guide
Item
Description
Initial Parity Group ID
An external volume group number and sequence
number. Values range from 1 - 1 to 16384 - 4096.
When two or more volumes with different values are
selected, blank displays.
Processor Blade
•
Range is from MPB0 to MPB7.
•
Auto (default): Blade is automatically selected by
the system, if available.
•
Blade with lowest number is used when Auto
cannot be selected.
•
When two or more volumes with different values
are selected, blank displays.
LDEV Settings
If changes to LDEV settings are made, box must be
checked to proceed.
LDEV ID
LDEV IDs allocated to the external volume.
LDEV Name
LDEV names.
Parity Group ID
Parity group numbers.
Emulation Type
LDEV emulation type.
Capacity
LDEV capacity.
SSID
SSIDs.
Change LDEV Settings
When clicked, opens Change LDEV Settings window.
View External LUN Properties window
Use this window to view settings and other details about external LUNs.
Universal Volume Manager GUI reference
Hitachi Virtual Storage Platform Hitachi Universal Volume Manager User Guide
D–41
Item
Description
Parity Group
ID
Parity group numbers.
Priority
Priority of external paths.
Port ID
Local system port number.
External WWN External system port identification number.
LUN ID
D–42
When the external path is connected to the selected external volume,
the LUN ID displays.
Universal Volume Manager GUI reference
Hitachi Virtual Storage Platform Hitachi Universal Volume Manager User Guide
Item
Status
Description
Status of external paths.
•
Unknown: The status of the mapping path is not known.
•
Checking: The system is checking the mapping path status.
•
Blockade: The mapping path is blocked.
•
Normal: There are no problems, the system is usable.
•
Disconnect: The external system or one of its mapped volumes
has been intentionally disconnected.
•
External Device Setting Changed: An external system setting
has been changed. For example, the path definition was deleted, or
the external system itself was replaced by another device.
•
LDEV Size Reduced: The external volume’s capacity was reduced.
•
Not Ready: The reply from the external system was NOT READY.
•
Illegal Request: The reply from the external system was ILLEGAL
REQUEST.
•
Command Aborted: The reply from the external system was
ABORTED COMMAND.
•
Busy: The external system is busy.
•
LDEV Reserved: The external system is reserved.
•
Response Error: The external system is blocked because of an
abnormal reply.
•
Initiator Port: The port attribute of the external system has been
changed to the initiator port.
•
Unknown Port: The port attribute of the external system is not
known.
•
Cannot Detect Port: The path has been removed or the external
system port cannot be found.
•
Timeout: Processing was retried because an abnormal reply was
returned; however, processing has timed out.
•
Passive: The external system port is not active. Port status is
normal but the port is not used for I/O.
•
Standby: The external system port is standing by. The port status
is normal but cannot receive I/O.
•
Target Error: Port failures, such as controller blockade, are
detected on the external system.
•
Unavailable: The reply from the external system was Unavailable.
The external system demands to change the connected port. Once
the status becomes Unavailable, the primary path is changed to an
alternate path in Standby status. When the primary path is
available, the status changes to Normal.
•
Backoff: The reply from the external system was Backoff. A
temporary error has occurred in the external volume and the path
is waiting for recovery. The primary path is not changed to the
alternate path immediately. After recovery, the status changes to
Normal.
•
Destage Failed: The writing of data from cache memory to the
volume has failed.
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Hitachi Virtual Storage Platform Hitachi Universal Volume Manager User Guide
D–43
Reconnect External Storage Systems window
Use this window to reconnect the external storage system.
See Reconnecting an external storage system, all mapped volumes on page
5-18 for instructions.
Item
Description
Parity Group ID
Parity group numbers.
Top LDEV ID
External volume’s top LDEV ID. Blank displays when an
LDEV is not created.
Top LDEV Name
External volume’s top LDEV name. Blank displays when
an LDEV is not created.
Vendor / Model / Serial
Number
Identifying information for the external system.
Reconnect External Volumes window
Use this window to reconnect the external volume.
See Reconnecting a single mapped volume on page 5-19 for instructions.
D–44
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Item
Description
Parity Group ID
Parity group numbers.
Top LDEV ID
External volume’s top LDEV ID. Blank displays when an
LDEV is not created.
Top LDEV Name
External volume’s top LDEV name. Blank displays when
an LDEV is not created.
Vendor / Model / Serial
Number
Identifying information for the external system.
Disconnect External Storage Systems window
Use this window to disconnect the storage system
See Disconnecting an external storage system, all mapped volumes on page
5-15 for instructions.
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Hitachi Virtual Storage Platform Hitachi Universal Volume Manager User Guide
D–45
Item
Description
Parity Group ID
Parity group numbers.
Top LDEV ID
External volume’s top LDEV ID. Blank displays when an
LDEV is not created.
Top LDEV Name
External volume’s top LDEV name. Blank displays when
an LDEV is not created.
Vendor / Model / Serial
Number
Identifying information for the external system.
Disconnect External Volumes window
Use this window to disconnect an external volume.
See Disconnecting a single mapped volume on page 5-16 for instructions.
D–46
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Hitachi Virtual Storage Platform Hitachi Universal Volume Manager User Guide
Item
Description
Parity Group ID
Parity group numbers.
Top LDEV ID
External volume’s top LDEV ID. Blank displays when an
LDEV is not created.
Top LDEV Name
External volume’s top LDEV name. Blank displays when
an LDEV is not created.
Vendor / Model / Serial
Number
Identifying information for the external system.
Assign Processor Blade wizard
Use this wizard to select a processor blade for the external volume.
See Changing external volume processor blade on page 5-4 for instructions.
The windows in this wizard are:
•
Assign Processor Blade window on page D-48
•
Confirm window on page D-49
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Hitachi Virtual Storage Platform Hitachi Universal Volume Manager User Guide
D–47
Assign Processor Blade window
Item
Processor Blade
D–48
Description
Processor blade for the external volume.
•
Range is from MPB0 to MPB7.
•
Auto (default): Blade is automatically selected by
the system.
•
Blade with lowest number is used when Auto
cannot be selected.
Universal Volume Manager GUI reference
Hitachi Virtual Storage Platform Hitachi Universal Volume Manager User Guide
Confirm window
Item
Description
Parity Group ID
Parity group numbers.
Top LDEV ID
External volume’s top LDEV ID. Blank displays when an
LDEV is not created.
Top LDEV Name
External volume’s top LDEV name. Blank displays when
an LDEV is not created.
MP Blade ID
Processor blade IDs allocated to the external volume.
External LDEV Properties window
Use this window to view settings for external LDEVs.
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Hitachi Virtual Storage Platform Hitachi Universal Volume Manager User Guide
D–49
LDEVs table
Item
D–50
Description
LDEV ID
LDEV IDs allocated to the external volume.
LDEV Name
LDEV names.
Parity Group ID
Parity group numbers.
Emulation Type
LDEVs’ emulation type.
Capacity
LDEVs’ capacity.
SSID
SSIDs.
MP Blade ID
Processor blade IDs allocated to the LDEV.
Universal Volume Manager GUI reference
Hitachi Virtual Storage Platform Hitachi Universal Volume Manager User Guide
Glossary
This glossary defines the special terms used in this document. Click the
letter links below to navigate.
A
access attribute
The setting on a logical volume (mainframe or open-systems) that
determines whether hosts can read and/or write to the volume.
alternate path
A secondary path (port, target ID, LUN) to a logical volume, in addition
to the primary path, that is used as a backup in case the primary path
fails.
AMS
Hitachi Adaptable Modular Storage
APLB
active path load balancing
array
Another name for a storage system.
B
bind mode
In bind mode the Cache Residency Manager extents are used to hold
read and write data for specific extents on volumes. Data written to the
Cache Residency Manager bind area is not destaged to the drives. For
bind mode, all targeted read and write data is transferred at host data
transfer speed.
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blade
A computer module, generally a single circuit board, used mostly in
servers.
C
cache logical partition (CLPR)
Consists of virtual cache memory that is set up to be allocated to
different hosts in contention for cache memory.
capacity
The amount of data storage space available on a physical storage device.
CCI
Command Control Interface
CHA
channel adapter. Another name for a front-end director (FED).
channel path
The communication path between a channel and a control unit. A
channel path consists of the physical channel path and the logical path.
CLI
command line interface
CLPR
cache logical partition
command device
A dedicated logical volume used only by Command Control Interface to
interface with the storage system. Can be shared by several hosts.
copy-on-write
Point-in-time snapshot copy of any data volume within a storage
system. Copy-on-Write Snapshot stores only changed data blocks.
Therefore, the amount of storage capacity required for each copy is
substantially smaller than the source volume.
custom volume (CV)
A customized (variable-sized) volume. The size is defined when Virtual
LVI/Virtual LUN is used.
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CVS
custom volume size
D
device
A physical or logical unit with a specific function.
device emulation
Indicates the type of logical volume.Mainframe device emulation types
provide logical volumes of fixed size, called logical volume images
(LVIs), which contain EBCDIC data in CKD format. Typical mainframe
device emulation types include 3390-9 and 3390-M. Open-systems
device emulation types provide logical volumes of variable size, called
logical units (LUs), that contain ASCII data in FBA format. The typical
open-systems device emulation type is OPEN-V.
DP
Hitachi Dynamic Provisioning
DP-VOL
Dynamic Provisioning-virtual volume. A virtual volume with no memory
space used by Dynamic Provisioning.
dynamic provisioning
An approach to managing storage. Instead of "reserving" a fixed amount
of storage, it removes capacity from the available pool when data is
actually written to disk. Dynamic provisioning is also referred to as thin
provisioning.
E
emulation
The operation of the Hitachi RAID storage system to emulate the
characteristics of a different storage system. For device emulation the
mainframe host "sees" the logical devices on the RAID storage system
as 3390-x devices. For controller emulation the mainframe host "sees"
the control units (CUs) on the RAID storage system as 2105 or 2107
controllers.
EXG
external volume group
external port
A fibre-channel port that is configured to be connected to an external
storage system for Universal Volume Manager operations.
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external volume
A logical volume with data that resides on drives which arephysically
located outside the Hitachi RAID storage system.
F
failover
The process of switching operations from the primary path or host to a
secondary path or host when the primary path or host fails.
FCIP
fibre-channel internet protocol
H
HDS
Hitachi Data Systems
host group
A group of hosts of the same operating system platform.
host mode
Operational modes that provide enhanced compatibility with supported
host platforms. Used with fibre-channel ports on RAID storage systems.
host mode option
Additional options for fibre-channel ports on RAID storage systems.
Provide enhanced functionality for host software and middleware.
I
initial copy
A copy operation that copies all data on the primary volume of a copy
pair to the secondary volume of the pair. An initial copy operation is
performed when a copy pair is created.
internal volume
A logical volume with data that resides on drives which are physically
located within the storage system. See also external volume on page
Glossary-4.
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L
LDEV
logical device
logical device (LDEV)
An individual logical data volume (on multiple drives in a RAID
configuration) in the storage system. An LDEV may or may not contain
any data and may or may not be defined to any hosts. Each LDEV has a
unique identifier or "address" within the storage system composed of the
logical disk controller (LDKC) number, control unit (CU) number, and
LDEV number. The LDEV IDs within a storage system do not change.
An LDEV formatted for use by open-systems hosts is called a logical unit
(LU).
logical partition (LPAR)
A subset of a system's hardware resources that is virtualized as a
separate system. For a storage system, logical partitioning can be
applied to cache memory or storage capacity.
logical unit (LU)
A logical volume that is configured for use by open-systems hosts (for
example, OPEN-V).
logical unit (LU) path
The path between an open-systems host and a logical unit.
logical volume
A logical device (LDEV), or a set of concatenated LDEVs in the case of
LUSE, that has been defined to one or more hosts as a single data
storage unit. A mainframe volume is called a logical volume image (LVI),
and an open-systems volume is called a logical unit. (LU).
LU
logical unit
LUN
logical unit number
LUNM
Hitachi LUN Manager
LUSE
Hitachi LUN Expansion; Hitachi LU Size Expansion
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LV
logical volume
LVM
Logical Volume Manager; logical volume management.
M
multi-pathing
A performance and fault-tolerant technique that uses more than one
physical connection between the storage system and host system. Also
called multipath I/O.
N
NSC
Hitachi TagmaStore® Network Storage Controller
O
OEM
original equipment manufacturer
P
pair
Two logical volumes in a replication relationship in which one volume
contains original data to be copied and the other volume contains the
copy of the original data. The copy operations can be synchronous or
asynchronous, and the pair volumes can be located in the same storage
system (in-system replication) or in different storage systems (remote
replication).
pair status
Indicates the condition of a copy pair. A pair must have a specific status
for specific operations. When an operation completes, the status of the
pair changes to the new status.
parity group
See RAID group on page Glossary-7.
path mode
Mode that indicates how a path operates between local and external
storage systems. The path modes are multi, single, and APLB.
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physical device
A data drive.
pool
A set of volumes that is reserved for storing Thin Image , Copy-on-Write
Snapshot data, or Dynamic Provisioning write data.
pool volume (pool-VOL)
A logical volume that is reserved for storing snapshot data for Thin
Image, Copy-on-Write Snapshot operations or write data for Dynamic
Provisioning.
port attribute
Indicates the type of fibre-channel port: target, RCU target, or initiator.
primary volume (P-VOL)
The volume in a copy pair that contains the original data to be replicated.
The data in the primary volume is duplicated synchronously or
asynchronously on the secondary volume on page Glossary-8.
The following Hitachi products use the term P-VOL: Copy-on-Write
Snapshot, ShadowImage, ShadowImage for Mainframe, TrueCopy,
Universal Replicator, Universal Replicator for Mainframe, and High
Availability Manager.
P-VOL
primary volume
R
RAID
redundant array of inexpensive disks
RAID group
A redundant array of inexpensive drives (RAID) that have the same
capacity and are treated as one group for data storage and recovery. A
RAID group contains both user data and parity information, which allows
the user data to be accessed in the event that one or more of the drives
within the RAID group are not available. The RAID level of a RAID group
determines the number of data drives and parity drives and how the
data is "striped" across the drives. For RAID1, user data is duplicated
within the RAID group, so there is no parity data for RAID1 RAID groups.
A RAID group can also be called an array group or a parity group.
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RAID level
The type of RAID implementation. RAID levels include RAID0, RAID1,
RAID2, RAID3, RAID4, RAID5 and RAID6.
remote control unit (RCU)
A storage system at a secondary or remote site that is configured to
receive remote I/Os from one or more storage systems at the primary
or main site.
remote copy
Another name for remote replication on page Glossary-8.
remote replication
Data replication configuration in which the storage system that contains
the original data is at a local site and the storage system that contains
the copy of the original data is at a remote site. TrueCopy and Universal
Replicator provide remote replication.
S
SATA
serial Advanced Technology Attachment
secondary volume
The volume in a copy pair that is the copy of the original data on the
primary volume (P-VOL). The following Hitachi products use the term
"secondary volume": ShadowImage, TrueCopy, Universal Replicator.
See also primary volume (P-VOL) on page Glossary-7.
service information message (SIM)
SIMs are generated by a RAID storage system when it detects an error
or service requirement. SIMs are reported to hosts and displayed on
Storage Navigator.
snapshot
A point-in-time copy of a data volume in a storage system.
SNMP
simple network management protocol
SOM
system option mode (SOM) on page Glossary-9
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SSD
solid-state drive. Another name for a flash drive.
SSID
storage subsystem ID. SSIDs are used for reporting information from
the CU to the mainframe operating system. Each group of 64 or 256
volumes requires one SSID, so there are one or four SSIDs per CU
image. The user-specified SSIDs are assigned during storage system
installation and must be unique to all connected host operating
environments.
S-VOL
secondary volume on page Glossary-8
system option mode (SOM)
Additional operational parameters for the Unified Storage VM storage
systems that enable the storage system to be tailored to unique
customer operating requirements. SOMs are set on the service
processor.
T
TagmaStore USP
Hitachi TagmaStore® Universal Storage Platform
target port
A fibre-channel port that is configured to receive and process host I/Os.
TC
Hitachi TrueCopy®
U
UR
Hitachi Universal Replicator
URz
Hitachi Universal Replicator for Mainframe
USP VM
Hitachi Universal Storage Platform VM
USP V/VM
Hitachi Universal Storage Platform V/VM
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UVM
Hitachi Universal Volume Manager
V
virtual device (VDEV)
A group of logical devices (LDEVs) in a RAID group. A VDEV typically
consists of some fixed volumes (FVs) and some free space. The number
of fixed volumes is determined by the RAID level and device emulation
type.
Virtual LUN volume
A custom-size volume with a size defined when Virtual LUN is used. Also
called a custom volume (CV).
virtual volume
A virtual volume in a storage system that has no physical storage space.
A V-VOL used for Dynamic Provisioning is called a DP-VOL.
VLL
Virtual LUN
volume
Another name for a logical volume on page Glossary-5.
VSP
Hitachi Virtual Storage Platform
V-VOL
virtual volume
W
WMS
Hitachi Workgroup Modular Storage
WWN
worldwide name
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Index
A
accessing data in an external volume 2–5
Add External Volume wizard D–13
adding an external path 5–8
alternate paths 2–13
C
Cache Mode info 5–2
Cache Mode setting 4–10
Cache Residency Manager 3–2
capacity 2–8
Copy-on-Write Snapshot 3–2
D
deleting volume mapping 5–21
destaging data 5–2
disconnecting an external path 5–9
disconnecting an external volume 5–16
disconnecting external volumes 5–15
Dynamic Provisioning 3–3
disconnecting 5–15
listing for remote command devices B–2
path modes for 2–15
planning 2–4
powering off, on 5–23
supported A–1
external volume groups, planning 2–8
external volumes
adjusting capacity 2–11
deleting mapping for 5–21
disconnecting all 5–15
disconnecting one 5–16
editing policies 5–3
mapping procedure 4–5
monitoring 5–2
planning for 2–4
reconnecting all 5–18
reconnecting one 5–19
F
FICON channels 2–7
E
I
edit settings for one ext. volume 5–4
editing external volume policies 5–3
emulation type
and LDEV capacity listing 2–9
external paths
adding 5–8
detaching a channel adapter 5–12
disconnecting 5–9
monitoring 5–2
planning 2–12
reconnecting 5–10
removing and replacing 5–12
status, troubleshooting 6–4
supported configurations 2–18
External Storage
mapping external volumes 4–5
External Storages window D–3
external systems
abbreviation in Stor. Nav. 2–16
I/O Timeout setting 5–8
Inflow Control info 5–3
Inflow Control setting 4–10
interfaces 1–5
internal volume, external volume overview 1–2
L
LDEVs in mapped volumes 1–3
local system
powering off, on 5–23
recognizing from external system 4–12
LUN Expansion 3–4
LUN Manager 3–3
M
mainframe volumes, planning for 2–7
management LU 2–5
mapped volume, preparing to use 4–11
Index–1
Hitachi Virtual Storage Platform Hitachi Universal Volume Manager User Guide
mapping a command device B–4
MIH 2–7
Multi path mode 2–14
how it works 1–2
internal, external volumes 1–2
planning workflow 2–2
requirements 2–2
setup 4–2
using spreadsheets 1–5
volume capacity requirements 2–8
P
pairs, adjusting capacity for 2–11
Path Blockade Watch setting 5–8
path errors, specific external systems 6–6
path mode 2–13
path mode, listing per system 2–15
path priority, raising and lowering 5–9
Performance Monitor 3–4
planning
external paths 2–12
external volumes 2–4
mainframe external volumes 2–7
Open system external volumes 2–7
volume capacity 2–8
workflow 2–2
port discovery, troubleshooting 6–10
ports, setup for external system 4–4
ports, setup for local system 4–2
priority, raising and lowering 4–7, 5–9
Processor Blade setting 4–10
processor blade, changing 5–4
product version Preface–x
V
Virtuall LUN/Virtual LVI 3–5
volume discovery, troubleshooting 6–10
W
WWN, editing settings 5–6
Q
QDepth setting 5–8
R
RAID considerations 2–3
reconnecting external path 5–10
reconnecting external systems and
volumes 5–18
remote command devices B–2
restrictions, remote command devices B–3
S
Single path mode 2–13
SNMP Agent 3–5
software supported 3–1
spreadsheets 1–5
supported external systems A–1
system requirements 2–2
T
technical support 6–2
Thin Provisioning 3–3
Transaction Processing Facility 2–4
troubleshooting 6–2
TrueCopy 3–4
U
Universal Replicator 3–4
Universal Volume Manager
components 1–3
Index–2
Hitachi Virtual Storage Platform Hitachi Universal Volume Manager User Guide
Hitachi Virtual Storage Platform Hitachi Universal Volume Manager User Guide
Hitachi Data Systems
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