"user manual"
PlatinumRAID
PRO+eSATA
Owner’s Guide
May 2008
www.MicroNet.com
FCC Compliance Statement
Federal Communications Commission
Radio Frequency Interference Statement
This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to
part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference
in a residential installation. This equipment generates, uses and can radiate radio frequency energy and, if not
installed and used in accordance with the instructions, may cause harmful interference to radio or television
reception, which can be determined by turning the equipment off and on. The user is encouraged to try to
correct the interference by one or more of the following measures:
1.
2.
3.
4.
Reorient or relocate the receiving antenna.
Increase the separation between the equipment and receiver.
Connect the equipment into an outlet on a circuit different from that to which the receiver is connected.
Consult the dealer or an experienced radio/TV technician for help.
Changes or modifications not expressly approved by the party responsible for compliance could void the user’s
authority to operate the equipment.
Only use shielded cables, certified to comply with FCC Class B limits, to attach this equipment. Failure to install
this equipment as described in this manual could void the user’s authority to operate the equipment.
Canadian Department of Communications Compliance: This equipment does not exceed Class B limits per radio
noise emissions for digital apparatus set out in the Radio Interference Regulation of the Canadian Department of
Communications. Operation in a residential area may cause unacceptable interference to radio and TV reception
requiring the owner or operator to take whatever steps are necessary to correct the interference.
Conformite aux regiements du Department Canadien de Communications: Cet equipement n’excede pas les
limites de Classe B concernaut les bruits des emissions de radio pour le dispositif digital etablies par le Reglement
d’Interference de Radio du Departement Canadien de Communications. L’operation de cet equipement dans un
quartier residential peut occasionner des parasites inacceptables dans la reception de la radio ou de la television
exigeant le proprietaire ou l’operateur de faire routes les necessaires pour corriger cet interference.
FTZ/BTZ German Postal Service Notice: We hereby certify that the ADV, SB, SBS, SS, SBX, SBT, MO, MS, MR, MT,
MD, CPK, CPKT, CPKD, DD and DDW products are in compliance with Postal Regulation 1046/1984 and are RFI
suppressed. The marketing and sale of the equipment was reported to the German Postal Service. The right to
retest this equipment to verify compliance with the regulation was given to the German Postal Service.
Bescheinigung des Herstellers/Importeurs: Hiermit wird bescheinigt, daB der/die/das: SB, SBS, SS, SBX, SBT,
MO, MS, MR, MT, MD, CPK, CPKT, CPKD, DD, DDW in Ubereinstimmung mit den Bestimmungen der: VFG1046,
VFG243 funk-enstort ist. Der Deutschen Bundespost wurde das Inverkehrbringen dieses Gerates angezeigt
and die Berechtigung zur Uberprdfung der Serie auf Einhaltung der Bestimmungen eingeraumt MicroNet
Technology, Inc.
PlatinumRAID Pro Owner’s Manual
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Warranty
Limitations of Warranty and Liability
MicroNet Technology has tested the hardware described in this manual and reviewed its
contents. In no event will MicroNet or its resellers be liable for direct, indirect, incidental, or
consequential damage resulting from any defect in the hardware or manual, even if they have
been advised of the possibility of such damages. In particular, they shall have no liability
for any program or data stored in or used with MicroNet products, including the costs of
recovering or reproducing these programs or data.
During the specified warranty period, MicroNet guarantees that the product will perform
according to specifications determined by the manufacturer, and will be free of defects. Parts
and labor of the received product, and replacement parts and labor are guaranteed during
the specified warranty period. The warranty covers defects encountered in normal use of the
product, and does not apply when damage occurs due to improper use, abuse, mishandling,
accidents, sand, dirt, excessive dust, water damage, or unauthorized service. The product must
be packed in its original packing material when shipped, or the warranty will be void. In all
cases, proof of purchase must be presented when a warranty claim is being made.
This manual is copyrighted by MicroNet Technology. All rights are reserved. This documentation
may not, in whole or part, be copied, photocopied, reproduced, translated, or reduced to any
electronic medium or machine readable form without prior consent in writing from MicroNet.
MicroNet and the MicroNet logo are registered trademarks of MicroNet Technology. FireWire,
the FireWire logo, Macintosh, and the MacOS Logo are trademarks of Apple Computer Inc.
Microsoft Windows and the Windows Logo are registered trademarks of Microsoft Corporation.
All other trademarks are the property of their respective owners.
Technical Support Policy
If you have a problem installing your system or suspect it is malfunctioning, please contact
the Authorized MicroNet Reseller from whom you purchased the system. If the reseller fails
to resolve the problem, please visit our support page at www.micronet.com/help, or call
MicroNet’s Help Desk for assistance at (310) 320-0772. Please have the model, serial number,
date of purchase, and the reseller’s name available before calling. If possible, call from a
telephone near the system so we can more readily direct you to make any necessary system
corrections, should they be required.
Returning Materials
If a reseller or MicroNet Technician finds it necessary to have the system returned for testing
or servicing, a Return Materials Authorization (RMA) number will be issued. The RMA number
must be placed on the outside of the carton in large, visible letters near the address label.
Return the complete system including all cables and software. The system must be packed
in the original packing materials and shipped prepaid. MicroNet will repair the system and
return it prepaid by similar common carrier and priority. Please record the RMA number and
make reference to it when inquiring on the status of the system. A returned unit found to be
fault-free will carry a $65.00 charge for service and repackaging.
PlatinumRAID Pro Owner’s Manual
3
Welcome
Welcome From MicroNet Technology
We are pleased that you have chosen the PlatinumRAID. Our systems are
designed for speed, reliability, compatibility, and performance. We think you
will find the system easy to install, and a productive addition to your computer
system.
This manual presumes that you are familiar with standard computer operations;
this includes copying files, opening documents, clicking with the mouse, and
organizing files or folders within other folders. If you are unfamiliar with
these operations, please consult the User’s Guide that was supplied with your
computer system. Your computer dealer and local user’s groups are also good
sources of information. After you are comfortable with the operation of your
computer, continue reading this manual which describes hardware installation
and operation.
Thank you again for choosing a MicroNet system. Please fill out the enclosed
registration card and mail it to the address below. Mailing the registration card
registers your system and provides us with helpful information. Alternatively,
You may also register your product online at www.MicroNet.com
Your comments assist us in improving and updating our products. Please feel
free to share them with us. Please send comments to:
MicroNet Technology
Attn: Customer Service
19260 Van Ness Ave
Torrance, CA 90501
[email protected]
PlatinumRAID Pro Owner’s Manual
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Table of Contents
Table of Contents
FCC Compliance Statement
Warranty Information
Welcome Note
Table of Contents
Chapter 1 -- Getting Started
Features and Benefits
System Requirements and Compatibility
Unpacking the PlatinumRAID
What’s Included
Choosing a place for your PlatinumRAID
The PlatinumRAID Interface Components
Communications and Control
Hot Plug Drive Replacement
Connecting the PlatinumRAID
Chapter 2- Understanding RAID
RAID
RAID 0
RAID 1
RAID 10
RAID 3
RAID 5
RAID Set
Volume Set
Online Capacity Expansion
Hot Swappable Disk Support
Instant Availability/Background Initialization
Array Roaming
Online RAID Level and Stripe Size Migration
Hot Spare Drives
Hot Swap Disk Rebuild
Chapter 3- Configuration Methods
1. Overview
2. Using the front panel touch-control interface
3. VT-100 Terminal (using the controller’s serial port)
4. Web Browser-based RAID management
Chapter 4- Getting a Fast Start
1. Overview
2. Main Menu Options
3. Configuring RAID Sets and Volume Sets
4. Designating Drives as Hot Spares
5. Using Quick Volume and RAID Set Setup
6. Creating a RAID Set using Quick Volume and RAID Setup Configuration
7. Using RAID Set and Volume Set Functions
Chapter 5- Navigating the RAID Controls
Conventions
Login Procedure
The Main Menu Configuration Tree
1. Quick Volume/RAID Setup (A)
2. Raid Set Functions (B)
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Table of Contents
3. Volume Set Functions (C)
4. Physical Drive Functions (D)
5. RAID System Functions (E)
6. Additional System Functions (F)
Chapter 6 - Built in Web-Based Administration
Introduction
Preparation
Login Procedure
The Main Menu Configuration Tree
1. Quick Volume/RAID Setup
2. Raid Set Functions
3. Volume Set Functions
4. Physical Drive Functions
5. System Controls
6. System Information
Chapter 7- Host Computer Setup
1. Volume Setup and Apple Macintosh
2. Volume Setup on Microsoft Windows
Chapter 8- Troubleshooting
Daily Use Tips
General Use Precautions
Frequently Asked Questions
Appendix A- Getting Help
Appendix B- RAID Level Comparison Table
Appendix C- Terminal Session Setup
Appendix D- Glossary of RAID Terms
Appendix E- Product Specifications
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1-Getting Started
Chapter 1 - Getting Started
Thank you for purchasing The MicroNet PlatinumRAID storage solution. With speed, high
capacity, ease of use, and support for numerous applications, PlatinumRAID is the ideal
solution for all of your data storage needs.
Please take advantage of the information contained within this manual to ensure easy setup
and configuration. If at any time you require technical assistance, MicroNet’s Help Desk is
available at 310-320-0772 or at www.micronet.com/help
Features and Benefits
The PlatinumRAID Pro Subsystem is a high-performance RAID subsystem built around
a powerful 64bit controller designed to meet or exceed the highest industry standards.
Outstanding features include:
•
SATA, FireWire 800, and USB 2.0 host connections for maximum host flexibility
•
SATA II, NCQ enabled drive channels
•
Configurable RAID engine for high data protection
•
On-line volume expansion and migration with no system down-time
Featuring high performance and availability RAID technology and advanced array management
features, The PlatinumRAID can serve in several applications:
•
As a high speed local storage device for a dedicated workstation
•
As a high-speed, fault tolerant server-attached storage device
•
As a redundant backup station
System Requirements and Compatibility
The PlatinumRAID Pro features triple host interfaces, including external SATA, FireWire 800
(downward compatible with FireWire 400,) and USB 2.0 (downward compatible with USB 1.1)
providing nearly universal connectivity. While the PlatinumRAID can function with a variety
of hardware and software combination, MicroNet has tested and approved the PlatinumRAID
Pro for compatibility with the following architectures:
PowerMac: G4-733 and better, OS-X revisions 10.4.8 and newer
Intel PCs: Pentium 3-500 and better, Windows revisions 2000 and newer
Unpacking the PlatinumRAID
Please unpack your PlatinumRAID in a static free environment, carefully making sure not to
damage or discard any of the packing material. If the RAID subsystem appears damaged, or
if any items of the contents listed below are missing or damaged, please contact your dealer
or distributor immediately.
In the unlikely event you may need to return the PlatinumRAID for repair or upgrade, please
use the original packing material to ensure safe transport.
PlatinumRAID Pro Owner’s Manual
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1-Getting Started
What’s Included
Your PlatinumRAID comes with the following items:
1 PlatinumRAID Pro unit
5 Disk Drive Modules
1 PlatinumRAID CD containing this manual in PDF format, warranty information, registration
and marketing materials
1 Ethernet cord
1 DB9-DB9 serial cord
1 power cord
1 external SATA cable
1 PCI to external SATA host bus adapter (Pro Model)
1 9 pin-9 pin FireWire 800 cable (Pro Model)
1 9 pin-6 pin FireWire 400 cable (Pro Model)
1 USB 2.0 cable (Pro Model)
Choosing a location for your PlatinumRAID
When selecting a place to set up your Disk Array, be sure to follow these guidelines:
•Place on a flat and stable surface capable of supporting at least 30lbs
•Place the Disk Array close enough to the computer for the host connection cable to reach.
•Use a grounded wall outlet.
•Avoid an electrical outlet controlled by wall switches or automatic timers. Accidental disruption
of the power source may wipe out data in the memory of your computer or Disk Array.
•Keep the entire system away from potential sources of electromagnetic interference, such
as loudspeakers, cordless telephones, etc.
!
CAUTION! Avoid direct sunlight, excessive heat, moisture, shock and
vibration, or dust
PlatinumRAID Pro Owner’s Manual
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1-Getting Started
The PlatinumRAID interface components
The following figures illustrate the connector locations for the RAID subsystems.
FRONT VIEW
Voltage, Temperature, and Fan Indicator lights
System Power, Activity, and Fault Indicator lights
Front Panel Display
Front Panel Interface buttons
Power Button
Disk Drive Present/Fault Indicator Lights
Disk Drive Activity Indicator Lights (1 per tray)
Disk Drive Tray Lock (1 per tray)
Disk Drive Tray release latch (1 per tray)
Disk Drive Trays
REAR VIEW
Power Connector
Fan Exhaust Vents (DO NOT BLOCK!)
Ethernet Management Port
External SATA port
RS232 Serial Control Port
FireWire Ports (Pro Models)
USB 2.0 Port (Pro Models)
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1-Getting Started
Communication and Control
RAID functions including creation, modification, and monitoring can be accomplished through
the front panel, the web based administration user interface, or an RS232 link through a VT100 terminal session to access the text-based Setup Menu. The LCD status panel informs you
of the Disk Array’s current operating status at a glance, as shown here:
LED
Normal Status
Problem Indication
Power LED
LED glows bright green
This LED does not light up after power switched on
Host Access LED
LED blinks amber during host
LED never flickers
accessing the RAID subsystem.
Disk Present LED
LED blinks blue during hard
drive read and write activity
LED glows bright green
System Fault LED
LED remains dark
This LED will blink red if there is a system error.
Voltage LED
LED glows bright green
This LED will blink red if there is a voltage error.
Fan LED
LED glows bright green
This LED will blink red if there is a fan problem
Temperature LED
LED glows bright green
This LED will blink red if the internal temperature rises
above the Spec setting
Disk Activity LED
LED does not light up during activity
This LED will blink red if there is a disk error.
Hot plug Drive Replacement
In the event of a drive failure, the RAID subsystem supports the ability to hot-swap drives
without powering down the system. A data module can be removed and replaced without
powering off the unit or taking the system off line. In a fault tolerant array, the RAID
rebuilding will proceed automatically in the background (see Section II-Understanding RAID
for more information.)
A drive failure will illuminate amber the drive indicator light above the failed drive on the
front of RAID subsystem. To replace a drive, please follow these steps:
1.Make sure the drive lock (see page 8, “The PlatinumRAID Interface components”) is in the
up-down position (use a small flathead screwdriver to turn the mechanism.)
2.Press down on the drive release latch (see page 8, “The PlatinumRAID Interface
components”) to release the drive tray
3.Gently pull out the disk drive tray handle and slide out the drive tray.
4. To replace: Slide in the replacement drive tray with the tray handle open. When the tray is
slid all the way into the PlatinumRAID Pro, push the tray handle closed.
!
IMPORTANT: NEVER remove a drive tray without replacing it. Operating the RAID with a drive
tray missing will disrupt airflow and may cause the PlatinumRAID to fail.
PlatinumRAID Pro Owner’s Manual
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Connecting the PlatinumRAID
Connecting the PlatinumRAID requires an available power socket, and a host with one of the
following interfaces:
• A FireWire 800 port
• A FireWire 400 port
• A USB 2.0/1.1 port
• An external SATA host bus connector (an external SATA PCI host bus adapter is included
with pro models)
To use the optional management and configuration interfaces, the following may also be
required:
• Using the built in Ethernet remote management requires an available Ethernet jack to a hub
or switch on your network.
• To use the VT100 terminal, a 9pin (DB9) serial port will be required on your host. If the
host does not have an available serial port, a USB to serial adapter may be used.
Attach the cables as illustrated:
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2-Understanding RAID
Chapter 2 - Understanding RAID
The PlatinumRAID controller subsystem is a high-performance SATA2 drive bus disk array
controller. When properly configured, the RAID subsystem can provide non-stop service with
a high degree of fault tolerance through the use of RAID technology and advanced array
management features.
The RAID subsystem can be configured to RAID levels 0, 1, 10, 3, and 5. RAID levels other
than 0 are able to tolerate a hard disk failure without impact on the existing data, and failed
drive data can be reconstructed from the remaining data and parity drives. RAID configuration
and monitoring is accessible through the LCD front control panel, serial port, or the built in
web administration interface. The PlatinumRAID Pro features the following high availability
functions:
• RAID Levels 0,1,10,3,5 Support
• Online Capacity Expansion
• Online RAID Level Migration
• Logical Drive Capacity Extension
• Array Roaming
• Automatic Drive Failure Detection
• Automatic Failed Drive Rebuilding
• Hot Spare Disk Drives
• Instant Availability/Background Initialization.
FYI:
The Berkeley RAID levels are a family of disk
array data protection and mapping techniques
described by Garth Gibson, Randy Katz, and David
Patterson in papers written while they were performing
research into I/O subsystems at the University of
California at Berkeley. There are six Berkeley RAID
Levels, usually referred to by the names RAID Level 1,
etc., through RAID Level 6.
This section will help you gain understanding of how these functions can serve your needs best.
RAID
RAID is an acronym for Redundant Array of Independent Disks. It is an array of multiple
independent hard disk drives that provide high performance and fault tolerance through
support of several levels of the Berkeley RAID techniques. An appropriate RAID level is
selected when the volume sets are defined or created, and is based on disk capacity, data
availability (fault tolerance or redundancy), and disk performance considerations. The RAID
subsystem controller makes the RAID implementation and the disks’ physical configuration
transparent to the host operating system, which means that the host operating system drivers
and software utilities are not affected regardless of the RAID level selected.
PlatinumRAID Pro Owner’s Manual
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2-Understanding RAID
RAID 0 (Striping)
This RAID algorithm writes data across multiple disk drives instead of just one disk drive. RAID
0 does not provide any data redundancy, but
does offer the best high-speed data throughput.
RAID 0 breaks up data into smaller blocks and
then writes a block to each drive in the array.
Pros: Disk striping enhances both read and
write performance because multiple drives
are accessed simultaneously,
Cons: The reliability of RAID Level 0 is less than
any of its member disk drives due to its lack
of redundancy.
RAID 1 (Disk Mirroring)
RAID 1, also known as “disk mirroring”, distributes duplicate data simultaneously to 2 disk drives.
Pros: RAID 1 offers extremely high data reliability
as all the data is redundant. If one drive
fails, all data (and software applications)
are preserved on the other drive.
Read performance may be enhanced as the
array controller can access both members
of a mirrored pair in parallel.
Cons: RAID 1 volume requires double the raw
data storage capacity
During writes, there will be a minor
performance penalty when compared to
writing to a single disk.
RAID 10 (Striped Mirror)
RAID 10 is a combination of RAID 0 and RAID
1, combing striping with disk mirroring. RAID
Level 10 combines the fast performance of
Level 0 with the data redundancy of Leve1 1.
In this configuration, data is distributed across
several disk drives, similar to Level 0, which are
then duplicated to another set of drive for data
protection. RAID 10 provides the highest read/
write performance of any of the Hybrid RAID
levels, but at the cost of doubling the required
data storage capacity.
Pros: Fastest read/write performance of any of the Hybrid RAID levels
High data reliability as all the data is redundant
Cons: Requires double the raw data storage capacity
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2-Understanding RAID
RAID 3
RAID 3 provides disk striping and complete
data fault tolerance though a dedicated parity
drive. RAID 3 breaks up data into smaller
blocks, calculates parity on the blocks, and
then writes the blocks to all but one drive in
the array. The parity data created is then written
to the last drive in the array. If a single drive
fails, data is still available by computing the
inverse operation on the data and parity of the
contents corresponding strips of the surviving
member disk. RAID 3 is best for applications
that require very fast large block data transfer
rates or long data blocks
Pros: Very good large file transfer performance
Fault tolerant
Cons: Not well suited for transaction processing or other I/O request-intensive applications.
RAID 5
RAID 5 is sometimes called striping with parity
at byte level. In RAID 5, the parity information
is written to all of the drives in the subsystems
rather than concentrated on a dedicated parity
disk. If one drive in the system fails, the parity
information can be used to reconstruct the data
from that drive. All drives in the array system
can be used to seek operation at the same time,
greatly increasing the performance of the RAID
system. RAID 5 is the most often implemented
RAID algorithm in RAID arrays.
Pros: Very good general transfer performance
Fault tolerant
Cons: Can be slower then RAID 3 at large size file transfers
RAID Set
A RAID Set is a group of disks containing one or more volume sets. The MicroNet Platinum
RAID supports as follows:
• Up to three RAID Sets are supported. Please note that multiple RAID Sets on the same
disks are not supported.
• From one to five drives can be included in an individual RAID Set.
• A Volume Set must be created either on an existing RAID set or on a group of available
individual disks (disks that are not yet a part of a RAID set). If there are pre-existing
RAID sets with available capacity and enough disks for specified RAID level desired,
then the volume set will be created in the existing RAID set of the user’s choice.
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2-Understanding RAID
Volume Set
A Volume Set is seen by the host system as a single logical device. It is organized in a RAID
level with one or more physical disks. RAID level refers to the level of data performance
and protection of a Volume Set. A Volume Set capacity can consume all or a portion of
the disk capacity available in a RAID
Set. Multiple Volume Sets can exist
Free Space
on a group of disks in a RAID Set.
Volume 1
Parity
Data
Data
Additional Volume Sets created in a
Data
specified RAID Set will reside on all
Volume 2
Data
Data
Parity
Parity
the physical disks in the RAID Set.
Disk 1
Disk 2
Disk 3
Disk 4
Thus each Volume Set on the RAID Set
A 4 Disk RAIDset may contain two volumes. Volume 1 can be
will have its data spread evenly across assigned a RAID 5 level of operation while Volume 2 might be
assigned a RAID 0+1 level of operation.
all the disks in the RAID Set.
• Volume Sets of different RAID
levels may coexist on the same
RAID Set.
• The maximum addressable size of a single volume set is 2 Terabytes.
• Up to eight volume sets can be created in a RAID set
Online Capacity Expansion
Online Capacity Expansion makes it possible to add one or more physical drives to a volume set,
while the server is in operation, eliminating the need to store and restore after re-configuring
the RAID set. When disks are added to a RAID set, unused capacity is added to the end of the
RAID set. Data on the existing volume sets residing on that RAID set is redistributed evenly
across all the disks. A contiguous block of unused capacity is made available on the RAID set.
The unused capacity can create additional volume set. The expansion process is illustrated
as following figure:
Before Expansion: Disk Array A, 600GB
After Disk Expansion: Disk Array A, 800GB
Free Space
200GB
Vol 1 (200GB)
Free Space
400GB
Vol 1 (200GB)
Vol 2 (200GB)
Vol 2 (200GB)
Disk 1
200GB
Disk 2
200GB
Disk 3
200GB
Disk 1
200GB
Disk 2
200GB
Disk 3
200GB
Disk 4
200GB
The RAID subsystem controller redistributes the original volume set over the original and newly added disks, using the same
fault-tolerance configuration. The unused capacity on the expanded RAID set can then be used to create additional volume
sets, with a different fault tolerance setting if required.
Array Roaming
The RAID subsystem stores configuration information both in NVRAM and on the disk drives,
and can protect the configuration settings in the case of a disk drive or controller failure. Array
roaming allows the administrator the ability to move a complete RAID set to another system
without losing RAID configuration and data on that RAID set. Should the PlatinumRAID
enclosure cease to function, the RAID set disk drives can be moved to another PlatinumRAID,
inserted in any order, and become instantly available.
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2-Understanding RAID
Hot Swappable Disk support
Your PlatinumRAID has a built in protection circuit to support replacement of disk drives
without having to shut down or reboot the RAID. In case of drive failure, the failed drive
can be removed from the PlatinumRAID and replaced with a new drive without disrupting
dataflow to the host computer.
Instant Availability/Background Initialization
RAID 0 and RAID 1 volume set can be used immediately after the creation, whereas RAID 3
and 5 volume sets must be initialized to generate parity information. PlatinumRAID features
both foreground and background initialization modes for RAID 3 and RAID 5 volumes- In
background mode, the initialization proceeds as a background task and the volume set is
fully accessible for system reads and writes without requiring a reboot and waiting for the
initialization completion. Furthermore, the RAID volume set is also protected against a single
disk failure while initialing. Background initialization takes longer to complete and host disk
access will be slower during the initialization process. Foreground Initialization must be
completed before the volume set ready for system accesses, but the format is faster.
Online RAID Level and Stripe Size Migration
Users can migrate both the RAID level and stripe size of an existing volume set, while the
PlatinumRAID is online and the volume set is in use. Online RAID level/stripe size migration
can prove helpful during performance tuning activities as well as at the addition of physical
disks to the RAID subsystem. For example, in a system using two drives in RAID level 1, you
could add capacity and retain fault tolerance by adding one drive. With the addition of third
disk, you have the option of adding this disk to your existing RAID logical drive by migrating
from RAID level 1 to 5. The result would be parity fault tolerance and double the available
capacity without taking the system offline.
Hot Spare Drives
A hot spare drive is an unused online available drive, which is ready for replacing a failed
disk drive. In a RAID level 1, 10, 3, or 5 RAID set, any unused online available drive installed
but not belonging to a RAID set can be defined as a hot spare drive. Hot spares permit you
to replace failed drives automatically without powering down your PlatinumRAID. When
your PlatinumRAID detects a drive failure, the system will automatically and transparently
rebuild using any available hot spare drive(s). The RAID set will be reconfigured and rebuilt
in background, while the RAID subsystem continues to handle system requests. During the
automatic rebuild process, system activity will continue as normal, but system performance and
fault tolerance will be affected.
Hot-Swap Disk Rebuild
A Hot-Swap function can be used to rebuild disk drives in arrays with data redundancy such as
RAID level 1, 10, 3, and 5. If a hot spare is not available at time of drive failure, the failed disk
drive must be replaced with a new disk drive so that the data on the failed drive can be rebuilt. If
a hot spare is available, the rebuild starts automatically when a drive fails. The RAID subsystem
automatically and transparently rebuilds failed drives in the background with user-definable
rebuild rates. The RAID subsystem will automatically restart the system and the rebuild if the
system is shut down or powered off abnormally during a reconstruction procedure condition.
Please note that the system may no longer be fault tolerant during degraded operation or the
rebuild process- Fault tolerance will be lost until the damaged drive is replaced and the rebuild
operation is completed.
PlatinumRAID Pro Owner’s Manual
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3-Configuration Methods
Chapter 3 - Configuration Methods
1. Overview
Following the hardware installation, the RAID subsystem must be configured and the volume
set units initialized before they are ready to use. This can be accomplished by one of the
following methods:
•
Front panel touch-control keypad
•
Terminal session connected through the controller’s serial port or telnet
•
Web browser-based RAID management
These user interfaces can access the built-in configuration and administration functions
that reside in the controller’s firmware. They
Note:
The PlatinumRAID allows only one
provide complete control and management of the
method to access menus at a time.
controller and disk arrays, requiring no additional
hardware or software.
2. Using the front panel touch-control keypad
The front panel keypad and liquid crystal display (LCD) are the primary user interface for
the RAID subsystem. All configuration and management (with the exception of firmware
upgrades) of the controller can be performed from this interface. The LCD provides a system
of screens with areas for information, status indication, or menus. The LCD screen displays up
to two lines at a time of menu items or other information.
The four function keys at the button of the front panel perform the following functions:
Key
Up Arrow
Down Arrow
ENT Key
ESC Key
Function
Use to scroll the cursor Upward / Rightward
Use to scroll the cursor Downward / Leftward
Submit Selection Function (Confirm a selected item)
Return to Previous Screen (Exit a selection configuration)
The main menu can be activated by hitting the ENT key. Use the up and down arrow buttons to highlight a menu item. Press ENT to select the highlighted item. Press the UP/
DOWN to browse the selection. Press ESC to return to the previous screen.
PlatinumRAID Pro Owner’s Manual
17
3-Configuration Methods
3. VT-100 user interface
Your PlatinumRAID may be controlled by establishing an terminal session via an RS232 serial
connection to a VT100 compatible terminal or emulation software, or via a Telnet session. All
RAID subsystem monitoring, configuration and administration functions are available through
terminal control. By Default, PlatinumRAID’s serial port is set to 115,200 Baud, 8 data bits,
N Parity, 1 stop. There are a wide variety of
Note:
Terminal Emulation packages, but for the most
You may connect a terminal while the
part they should be very similar; Please see
RAID subsystem is powered on
appendix C for common configurations.
The following table describes the navigation convention for the VT-100 terminal
configuration utility:
Key
Arrow Keys
Enter Key
ESC Key
L Key
X Key
RAID
Function
Move cursor
Submit selection function
Return to previous screen
Line draw
Redraw
4. Web browser-based RAID management
The PlatinumRAID controller firmware includes a complete HTML-based weblet application
that allows all configuration and monitoring to be performed across any IP based network,
and utilizes standard web browsers for interfacing.
To ensure proper communications between the RAID subsystem and Web browser-based RAID
management, Please connect a standard, Cat5 Ethernet cable to the RJ45 network jack on the
back of your PlatinumRAID and attach to your existing network. In order to access the web
administration utility please note the IP address displayed on the LCD screen. You may launch
your firmware-embedded TCP/IP & Web Browser-based RAID manager by entering http://[IP
Address] in your web browser. The RAID subsystem controller default User Name is “admin”
and there is no password assigned from the factory. Please refer to Chapter 6, section 6.2 for
more information on proper network settings.
The following table describes the navigation convention for the Web configuration utility:
Key
Mouse pointer
Click Links
Function
Move cursor
Submit selection function
PlatinumRAID Pro Owner’s Manual
18
4-Getting a Fast Start
Chapter 4 - Getting a Fast Start
1. Overview
The LCD front panel is your primary method for control and monitoring of your
PlatinumRAID. Utilizing the LCD, you can:
• Create RAID set,
• Expand RAID set,
• Define volume set,
• Add physical drive
• Modify volume set
• Modify RAID level/stripe size,
• Define pass-through disk drives,
• Modify system function and
• Designate drives as hot spares.
2. Main Menu Options
Select an option and the related information or submenu items display beneath it. The submenus for each item are explained on the section 4.8.3. The configuration utility main menu
options are:
Ch
1
2
3
4
5
6
7
8
9
Option
Description
Create a default configuration which is based on the
Quick Volume And RAID Set Setup
number of physical disks installed
RAID Set Functions
Create a customized RAID set
Volume Set Functions
Create a customized volume set
Physical Drive Functions
View individual disk information
RAID System Functions
Setting the RAID system configurations
Views System Events
Record all system events in the buffer
Clear Event Buffer
Clear all event buffer information
Hardware Monitor
Show all system environment status
System Information
View the controller information
3. Configuring RAID Sets and Volume Sets
You can configure RAID sets and volume sets using either the Quick Volume And RAID Set
Setup (Choice 1 above) or with the RAID Set Functions/Volume Set Functions (Choices 2 and
3 above.) Each configuration method requires a different level of user input. The general flow
of operations for RAID set and volume set configuration is as follows:
Step
1
2
3
4
5
Action
Designate hot spares/pass-through (optional).
Choose a configuration method.
Create RAID set using the available physical drives.
Define volume set using the space in the RAID set.
Initialize the volume set and use volume set in the HOST OS.
PlatinumRAID Pro Owner’s Manual
19
4-Getting a Fast Start
4. Designating Drives as Hot Spares
To designate drives as hot spares, press ENT to enter the Main menu. Select the RAID Set
Functions option and then press ENT. All RAID set functions will be displayed. Select
the Create Hot Spare Disk option and then press ENT. The first unused physical device
connected to the current controller appears: Scroll to the unused physical devices and select
the target disk to assign and press ENT to designate it as a hot spare.
5. Using Quick Volume and RAID Set Setup
Using Quick Volume And RAID Setup, the RAID set you create is associated with exactly one
volume set, and you can modify the RAID level, stripe size, and capacity. Designating Drives
as Hot Spares will also combine with RAID level in this setup.
The volume set default settings will be:
Parameter
Setting
Volume Name
Volume Set # 00
SCSI Channel/SCSI ID/SCSI LUN 0/0/0
Cache Mode
Write Back
Tag Queuing
Yes
Max Sync Rate
150
SATA Mode
Reserved (SATA II+NCQ)
The default setting values can be changed after configuration is complete.
PlatinumRAID Pro Owner’s Manual
20
4-Getting a Fast Start
6. Creating a RAID set using Quick Volume And RAID Setup Configuration
Step
1
2
3
4
5
6
7
8
Action
Choose Quick Volume And RAID Setup from the main menu. The available RAID levels and
associated Hot Spare for the current volume set drive are displayed.
RAID Level Try to use drives of the same capacity in a specific array. If you use drives with
different capacities in an array, all the drives in the array is treated as though they have the
capacity of the smallest drive in the array.
The number of physical drives in a specific array determines the RAID levels that can be
implemented with the array.
RAID 0 requires one or more physical drives,
RAID 1 requires at least 2 physical drives,
RAID 1+ Spare requires more than 2 physical drives,
RAID 10 requires 4 physical drives,
RAID 10+ Spare requires 5 physical drives,
RAID 3 requires at least three physical drives,
RAID 5 requires at least three physical drives,
RAID 3+ Spare requires at least four physical drives, and
RAID 5 + Spare requires at least four physical drives.
Using the UP/DOWN key to select the RAID for the volume set and presses ENT to confirm it.
Available Capacity Set the capacity size for the volume set. After select RAID level and press ENT.
The selected capacity for the current volume set is displayed. Using the UP/DOWN to create the
current volume set capacity size and press ENT to confirm it. The available stripe sizes for the
current volume set are displayed.
Select Stripe size This parameter specifies the size of the stripes written to each disk in a RAID
0, 1, 10, 3, or 5 Volume Set. You can set the stripe size to 4 KB, 8 KB, 16 KB, 32 KB, 64 KB,
or 128 KB. A larger stripe size provides better-read performance, especially if your computer
does mostly sequential reads. However, if you are sure that your computer does random read
requests more often, choose a small stripe size. Using the UP/DOWN to select stripe size and
press. ENT to confirm it.
When you are finished defining the volume set, press ENT to confirm the Quick Volume And
RAID Set Setup function.
Foreground/Background Initialization
Press ENT to specify foreground initialization and ESC to specify background initialization.
Foreground initialization must be completed before the volume set ready for system accesses,
but completes faster. With Background initialization the volume set is fully accessible for system
reads and writes during initiaization, but the initialization process takes longer and system
performance will be affected.
The controller will begin to Initialize the volume set you have just configured
If you need to add additional volume set using main menu Create RAID Volume Set function.
PlatinumRAID Pro Owner’s Manual
21
4-Getting a Fast Start
7. Using RAID Set and Volume Set Functions
Creating a usable volume requires both a RAID set and an associated Volume set. The RAID
and Volume set functions allow you to control those parameters, as well as creating Hot
Spares. Select this method to configure new RAID sets and volume sets. This configuration
option allows you to associate volume set with partial and full RAID set.
Step
1
2
3
4
5
6
7
8
9
10
11
12
Action
To setup the Hot Spare (option), choose RAID Set Functions from the main menu. Select the
Create Hot Spare Disk to set the Hot Spare.
Choose RAID Set Function from the main menu. Select the Create A New RAID Set.
A Select Drive IDE Channel in the next displayed showing the IDE drive connected to the
current controller.
Press the UP/ DOWN to select specific physical drives. Press the ENT to associate the selected
physical drive with the current RAID set.
The number of physical drives in a specific RAID set determines the RAID levels that can be
implemented with the RAID set.
RAID 0 requires one or more physical drives per RAID set.
RAID 1 requires at least two physical drives per RAID set.
RAID 1 + Spare requires at least three physical drives per RAID set.
RAID 10 requires four physical drives per RAID set.
RAID 10 + Spare requires five physical drives per RAID set.
RAID 3 or 5 requires at least three physical drives per RAID set.
RAID 3 or 5 + Hot Spare requires at least four physical drives per RAID set.
After adding physical drives to the current RAID set as desired, press ESC to confirm the Select
Drive IDE Channel function.
Press ENT when you are finished creating the current RAID set. To continue defining another
RAID set, repeat step 3. To begin volume set configuration, go to step 7.
Choose Volume Set Functions from the main menu. Select the Create RAID Volume Set and
press ENT.
Choose one RAID set from the Select RAID Set screen. Press ENT to confirm it.
The volume set attributes screen appears:
The volume set attributes screen shows the volume set default configuration value that is
currently being configured. The volume set attributes are:
The RAID Level,
The Stripe Size,
The Cache Mode (Default Write Back),
The Host Channel(s)/IDE ID (Default 0/0) (see chapter 5, section 3 for more information)
The Tagged Queuing (Default Enabled)
The Max Sync Rate (Default 150MB/S)
Press UP/DOWN to select the attributes, and press ENT to modify each attribute of the default
value. Use UP/DOWN to select attribute value and press ENT to accept.
After modifying the attribute, press ESC to enter the Select Capacity for the volume set. Use the
UP/DOWN to set the volume set capacity and press ENT to confirm it.
When you are finished defining the volume set, press ENT to confirm the Create function.
Foreground/Background Initialization
Press ENT to specify foreground initialization and ESC to specify background initialization.
Foreground initialization must be completed before the volume set ready for system accesses,
but completes faster. With Background initialization the volume set is fully accessible for system
reads and writes during initiaization, but the initialization process takes longer and system
performance will be affected.
PlatinumRAID Pro Owner’s Manual
22
5-RAID Controls-LCD/Terminal
Chapter 5 - LCD and Terminal RAID Controls
This Chapter describes the menu and control structure for your PlatinumRAID using the front
panel, serial port, or via Telnet. The RAID subsystem configuration utility is firmware-based
and its operation is independent of host computer type or operating system.
Conventions
In this chapter, menu navigation is described through scrolling
through options, making selections (ENT) or rejections (ESC).
For LCD and terminal session controls, navigating is controlled
by the arrow keys, the ENT or Enter key, and the ESC key on
the front panel or the terminal keyboard.
Initial Screen
Login Procedure
By Default, The PlatinumRAID ships without a password
defined (user changeable to protect the internal RAID
subsystem from unauthorized entry). The controller will check
the password only when entering the main menu from the
initial screen The RAID subsystem will automatically go back
to the initial screen when it does not receive any command in
twenty seconds.
The Main Menu Configuration Tree
1. Quick Volume/RAID Setup (A)
2. RAID Set Function (B)
 
 
 
 
 
3. Volume Set Function (C)
 
 
 
 
 
4. Physical Drives (D)
 
 
 
 
PlatinumRAID Pro Owner’s Manual
2.1
2.2
2.3
2.4
2.5
2.6
2.7
3.1
3.2
3.3
3.4
3.5
3.6
4.1
4.2
4.3
4.4
4.5
Create RAID Set
Delete RAID Set
Expand RAID Set
Activate RAID Set
Create Hot Spare
Delete Hot Spare
RAID Set Information
Create Volume Set
Delete Volume Set
Modify Volume Set
Check Volume Set Consistency
Stop Volume Set Consistency
Display Volume Info
Display Drive Information
Create Pass-Through Disk
Modify Pass-Through Disk
Delete Pass-Through Disk
Identify Selected Drive
23
5-RAID Controls-LCD/Terminal
5. RAID System Controls (E)
 
 
 6. Additional System Functions (F)
 
 
 
 
!
5.1 Mute The Alert Beeper
5.2 Alert Beep Setting
5.3 Change Password
5.4 JBOD/RAID Operation
5.5 Background Task Priority Setting
5.6 Maximum SATA Mode
5.7 HDD Read Ahead Cache
5.8 Staggered HDD Spin Up control
5.9 HDD SMART Status Polling
5.10 Disk Capacity Truncation
5.11 Serial Port Configuration
5.12 Update Firmware
5.13 Reset Controller
6.1 Ethernet Configuration
6.2 View System Events
6.3 Clear All Event Buffers
6.4 Hardware Monitor
6.5 System Information
CONSIDERATIONS FOR RAID VOLUME CREATION
Your PlatinumRAID is capable of creating large logical volumes (LUNS) in excess of 2 Terabytes,
with the following caveats:
1. Large LUNS (>2TB) can only be accessible via eSATA. Attempting to access a large LUN over a FireWire
or USB port can result in data loss!
2. Large LUNS must be supported by the host bus adapter and the host Operating System. Windows
2003, Vista, Mac OS X 10.4.8, and Linux distributions with appropriate kernels all support large LUNS.
Windows XP and prior cannot address large LUNS and must use eSATA host bus adapters that have
RAID support. MicroNet offers such host bus adapters- consult your MicroNet authorized reseller for
more information.
3. The PlatinumRAID Pro can address up to 3 “normal” (<2tb) intependent LUNs- 1 mapped to the eSATA
port and 2 mapped to the FireWire port. only one of the volumes mapped to the FireWire ports can be
visible over USB. The LUN mapped to the eSATA port can be one of the LUNs mapped to FireWire.
1. Quick Volume/RAID Setup (A)
4O TAL XXXX '"
3ELECT XXXX '"
Á Ë KEY TO
SELECT THE SIZE
-AIN-ENU
4O TAL X $ISKS
Quick Volume And RAID Setup is the
2AID fastest way to prepare a RAID and volume
2AID 2AID 3PARE
set, and needs few keystrokes to complete.
2AID This option creates a RAID set with the
2AID 3PARE
following properties:
2AID 2AID 3PARE
1. All of the physical disk drives are contained
in a RAID set.
1UICK 6OLUME
!ND
!
2AID 3ET 3ETUP
2. The RAID levels associated with hot spare,
capacity, and stripe size are selected during
the configuration process.
2AID 3ET !LREADY
%XISTING
3. A single volume set is created utilizing all 5 "
drives in the disk array.
4. For step by step Volume Set functions, please see Chapter 4, section 6.
PlatinumRAID Pro Owner’s Manual
3TRIPE 3IZE
K "YTES
KKK
7RAPS !ROUND
%.4 4O #REATE
%3# 4O !BORT
%.4 4O &AST )NIT
%3# 4O .ORMAL
6OLUME 3ET )NITIALIZE
24
5-RAID Controls-LCD/Terminal
2. RAID Set Functions (B)
Select the RAID Set Function to manually B
configure the RAID set for the first time or
delete/reconfigure existing RAID sets. The
RAID Set function allows more complete
control over the RAID creation process, but
requires more interaction then the Quick
Volume/RAID Setup option. To enter a
RAID Set Functions, press ENT to enter
the Main menu. Scroll to select the “RAID
Set Functions” option and press ENT to
enter further submenus. All the RAID set
submenus will be displayed.
3Uf[hSfWD3;6
EWf
2.1 Create A New RAID Set
Please refer to Chapter 4 section 7-”Using
RAID Set and Volume Functions” for
detailed step by step procedure reference
2.2 Delete Existing RAID Set
Once this option is selected, scroll to select
the RAID set number to delete and press
ENT. A Confirmation screen appears, and
press ENT to delete the existing RAID set.
A second confirmation screen will appear,
and choose “Yes” to complete the deletion.
2.3 Expand Existing RAID Set
Note:
Instead of deleting a RAID set and recreating it with additional If a disk drive fails during disk drives, the Expand existing RAID Set function allows the RAID set expansion and
user to add disk drives to the RAID set that already exists.
a hot spare is available, an auto
To expand an existing RAID set, scroll to choose the “Expand rebuild operation will occur after
Existed RAID Set” option. Scroll to select the RAID set number the RAID set expansion completes.
to be expanded and then press ENT. If there is an available
disk, then the Select Drive IDE Channel x appears. Scroll to select the target disk and then
press ENT to select it. Press ENT to start the expansion process. The new added capacity will
be available for new volume sets. To define one or more volume sets, follow the instruction
presented in the Volume Set Function to create the volume sets. When RAID migration is in
progress, migration status is displayed in the RAID and volume status areas of the RAID Set
information.
!
IMPORTANT: Once the RAID Set expansion process has started it cannot be stopped. The process
must complete before any other RAID functions will be available.
PlatinumRAID Pro Owner’s Manual
25
5-RAID Controls-LCD/Terminal
2.4 Activate RAID set
Following a drive failure, the affected RAIDset will operate in degraded mode, and will
continue to function until the unit is reset. Following a reset, in order for a degraded RAIDset
to be available to the host it must be activated. Select “Activate RAID Set” option. Scroll to
select the RAID set number to be activated and then press ENT.
!
ACTIVATING AN INCOMPLETE RAIDSET
When one of the disk drives is removed and the RAID rebooted, the RAID set state will change to
Incomplete and will not be available at first boot. To force the RAIDset to be available, use the
Activate RAIDSet (2.4) option. The RAIDset will become available in degraded state.
2.5 Create Hot Spare Disk
For detailed step by step instructions, Please reference Chapter 4, Section 4- “ Designating
Drives as Hot Spares.”
2.6 Delete Hot Spare Disk
To delete hot spare, choose the “Delete Hot Spare Disk” option. Select the hot spare to delete
and then press ENT to select it. The confirmation screen appears, and press ENT to delete
the hot spare.
2.7 Display RAID Set Information
Scroll to the Display RAID Set Information option and press ENT. Select the RAID set
desired, and the RAID set information will be displayed. Scroll through the available options
to see RAID Set Name, Total Capacity,
Free Capacity, Number of Member Disks,
C
Min. Member Disk Capacity and RAIDSet
State.
RAID Level
3. Volume Set Function (C)
St ripe Size
A volume set is seen by the host system
as a single logical device, and is organized
in a RAID level with one or more physical
disks. RAID level refers to the level of data
performance and protection of a Volume
Set. A Volume Set capacity can consume all
or a portion of the disk capacity available
in a RAID Set, and multiple Volume Sets
can exist on a group of disks in a RAID
Set. All Volume Sets created in a specified
RAID Set will reside on all the physical
disks in the RAID Set, and the data spread
evenly across all the disks in the RAID Set.
To enter a Volume Set Function, press ENT
to enter the main menu. Scroll to select
the Volume Set Functions option and then
press ENT to enter further submenus.
<0, 1 , 3 , 5 >
Wr aps A round
Ch g. St ripe Size
* xxxx By tes
<4k, 8k, 1 6k, ... 128 k>
Wr aps A round
Change Cache Mode
*Write Back
<Write-B ack; Write-Through>
Wraps A round
IDE Host Channel
*Channel 0
<0,1,0+1 Cluster>
Wr aps A round
Change Channel 0
Lun Selection
*0-Master
<0-Master, 1-Slave>
Wr aps A round
Cache Mode
Se lect Raid Se t
Ra id Se t # xx
Host Channel
Host Ch0 LUN
Ta gged Qu euing
Ch g. Ta gged Queuing
* E nabled
<Ena bled, D isab led>
Wraps A round
Ch g. Sy nc Ra te
* ATA150
<ATA33...ATA150>
Wr aps A round
IDE Transfer Mode
Volu me Na me
Ch g. Vo lume Na me
Vo lume Se t # xx
ESC
Vo lume Se t
Fu nction
To tal : xxxxG B
Se lect: xxxxG B
Cr ea te Raid
Vo lume Se t
Dele te Existe d
Vo lume Se t
EN T : To Cr ea te
ES C : To Abort
EN T : Fa st Init
ES C : Normal
St arting Vo lume Se t
initializ ation
Se lect Raid Se t
Ra id Se t # xx
Sele ct Vo lumeSe t
Vo lume Se t # xx
D
PlatinumRAID Pro Owner’s Manual
Ch g. Raid leve l
* R aid x
EN T : To De lete
ES C : To Abort
Are Yo u Su re ?
ENT: Yes, ESC:No
1
26
5-RAID Controls-LCD/Terminal
!
CONSIDERATIONS FOR RAID VOLUME CREATION
Your PlatinumRAID is capable of creating large logical volumes (LUNS) in excess of 2 Terabytes,
with the following caveats:
1.Large LUNS (>2TB) can only be accessible via eSATA. Do not map a large LUN to channel 0. Attempting
to access a large LUN over a FireWire or USB port can result in data loss!
2.Large LUNS must be supported by the host bus adapter and the host Operating System. Windows
2003, Vista, Mac OS X 10.4.8+, and Linux distributions with appropriate kernels all support large
LUNS. Windows XP and prior cannot address large LUNS and must use eSATA host bus adapters that
have RAID support. MicroNet offers such host bus adapters- please consult your MicroNet authorized
reseller for more information.
3.The PlatinumRAID Pro can address up to 3 “normal” (<2tb) independent LUNs- 1 mapped to the eSATA
port and 2 mapped to the FireWire or USB ports. Only one of the volumes mapped to the FireWire ports
can be visible over USB.
3.1 Create RAID Volume Set
The volume set attributes screen shows
the volume set default configuration
value that is currently being configured.
These attributes are:
Capacity
Host Channel
RAID Level
Host Ch-0 LUN
Stripe Size
Tagged Queuing
Cache Mode
ATA Transfer Mode
Volume Name (number)
Scroll to select attribute to modify and Press
ENT to select the desired attribute value.
The following subsections discuss each
attributes, and for step by step instructions,
please reference chapter 4, section 7-”Using
RAID Set and Volume Set Functions.”
3.1.1 Capacity
Enter the appropriate volume size to fit
your application. If large LUNS are to be
used, select “Enable Large LUN support.”
Each volume set has a selected capacity
which is less than or equal to the total
capacity of the RAID set on which it
resides.
1
RAID Level
St ripe Size
Ch g. Raid leve l
* R aid x
<0, 1 , 3 , 5 >
Wr aps A round
Ch g. St ripe Size
* xxxx By tes
<4k, 8k, 1 6k, ... 128 k>
Wr aps A round
Change Cache Mode
*Write Back
<Write-B ack; Write-Through>
Wraps A round
IDE Host Channel
*Channel 0
<0,1,0+1 Cluster>
Wr aps A round
Change Channel 0
Lun Selection
*0-Master
<0-Master, 1-Slave>
Wr aps A round
Cache Mode
Select Vo lumeSet
Volume Set # xx
Host Channel
Host Ch0 LUN
Ta gged Qu euing
Select Raid Set
Raid Set # xx
Ch g. Ta gged Queuing
* E nabled
<Ena bled, D isab led>
Wraps A round
Ch g. Sy nc Ra te
* ATA150
<ATA33...ATA150>
Wr aps A round
IDE Transfer Mode
Volu me Na me
Modify Volume
Set Attribute
Ch g. Vo lume Na me
Vo lume Se t # xx
ESC
ENT : To Modify
ESC : To Abort
Check Volume Set
Consistency
Select Raid Set
Raid Set # xx
Stop Volume Set
ConsistencyCheck
ENT : To Stop
ESC : To Abort
Are You Sure ?
ENT :Ye s, ESC :No
Select VolumeSet
Volume Set # xx
ENT : To Check
ESC : To Abort
Raid Set Name
Volume Capacity
Volume State
Host Ch Attrib
Raid Level
Display Volume
Set Information
3.1.2 RAID Level
PlatinumRAID supports RAID level 0,1, 0+1 (10), 3 and 5.
Select Raid Set
Raid Set # xx
Select VolumeSet
Volume Set # xx
Stripe Size
Member Disks
Cache Attribute
Ta gged Queuing
Max Sync Speed
Current Speed
Volume Name
3.1.3 Stripe Size
This parameter sets the size of the segment written to each disk in a RAID 0, 1,
3, or 5 logical drive. You can set the stripe size to 4 KB, 8 KB, 16 KB, 32 KB, 64 KB, or 128
KB. A larger stripe size produces better-read performance for mostly sequential reads. For
better random reads performance, select a smaller stripe size.
PlatinumRAID Pro Owner’s Manual
27
5-RAID Controls-LCD/Terminal
3.1.4 Cache Mode
PlatinumRAID supports Write-Through and Write-Back Caching algorithms. In the WriteBack caching method, modifications to data in the cache aren’t copied to the cache source
until absolutely necessary, whereas Write-Through cache data is written to the storage and
the cache memory simultaneously. Write-back caching yields better performance than writethrough caching because it reduces the number of write operations to disk, but is also more
prone to data loss due to service interruptions.
3.1.5 Volume Name
The default volume name will always appear as Volume Set #. You can rename the volume
set name providing it does not exceed 15 characters.
3.1.6 Tag Queuing
The Command Tag (Drive Channel) function controls the command tag queuing support
for each drive channel. Tag Queuing is useful for enhancing overall system performance
under multi-tasking operating systems. This function should normally remain enabled unless
instructed otherwise by MicroNet support.
3.1.7 Host Channel Selection
PlatinumRAID Pro supports two host channels. Host Channel 1 is the host SATA interface, and
Channel 0 is accessed by the either host FireWire or USB ports- If both FireWire and USB ports
are connected, only the FireWire ports will be active.
!
SIMULTANEOUS HOST CHANNEL VOLUME MAPPING
The PlatinumRAID Pro can map a Volumeset to both host channels simultaneously for clustering environment.
Never attempt to mount the same volume on both channels without proper clustering software.
Mounting the same volume on both channels without proper software can result in
data corruption or loss!
3.1.8 Host Channel 0 LUN
PlatinumRAID Pro supports 2 logical units on host channel 0, which controls volume sets
accessible via FireWire and USB connections. Any Volume Set may be mapped to either
Host Channel 0 Lun 0-Master, or Lun 1-Slave. Please note that Host channel 0 Lun 1-Slave is
accessible only via FireWire, while Lun 0-Master is accessible via FireWire and USB.
3.1.9 IDE Transfer Mode
The RAID subsystem supports up to 150MB/S host data transfer rate. This field should not be
modified unless instructed by MicroNet technical support.
3.2 Delete Volume Set
Scroll to choose the Delete Existing Volume Set option. Select the RAID set number and
volume set to delete and press ENT. At the subsequent confirmation screen, press ENT to
confirm deletion.
PlatinumRAID Pro Owner’s Manual
28
3.3 Modify Volume Set
Use this option to modify an existing volume set attributes as described in the above section.
To modify volume set attributes scroll to choose the “Modify Volume Set Attribute option” from
the “RAID set system” function. Select the RAID set number to modify and press ENT. Select the
volume set number that user want to modify and press ENT. The volume set attributes screen
shows the volume set setting configuration attributes that was currently being configured.
Select attribute to change and Press the ENT to modify the default value. Select attribute value
and press the ENT to accept the selection value. Choose this option to display the properties
of the selected Volume Set; you can modify all values except the capacity.
Note:
When a volume set is migrating from one RAID level to another, a volume set stripe size changes, or when a disk
is added to a RAID set the volume state will change to migrating. During migration. the migration status will be displayed
in the volume state area of the LCD display. No additional volume changes can be performed until migration completes.
3.4 Check Volume Set Consistency
To check volume set consistency from volume set system function, scroll to choose the “Check
Volume Set Consistency” option. Select the RAID set number to check and press ENT. Select
the volume set number to check and press ENT. At the subsequent confirmation screen, press
ENT to start the volume set consistency check.
3.5 Stop Volume Set Consistency Check
To stop volume set consistency check from volume set system function, scroll to choose the
“Stop Volume Set Consistency Check” and then press ENT.
3.6 Display Volume Set Information
To display volume set information, scroll to choose the “Display Volume Information” option
and then press ENT. Select the RAID set number that user wants to show and press ENT.
Select the volume set number to display and press ENT. The volume set attributes screen
shows the volume set setting configuration value that was currently being configured. See this
chapter, section 3.1-”Create RAID Volume Set” for the various RAID attribute descriptions.
PlatinumRAID Pro Owner’s Manual
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5-RAID Controls-LCD/Terminal
4. Physical Drive Functions (D)
Choose this option from the Main Menu to
select a physical disk and to perform the
operations listed below. To enter a Physical
Drive Functions, press ENT to enter the
main menu. Scroll to select the Physical
Drive Functions option and then press ENT
to enter further submenus. All physical
drive submenus will be displayed.
D
Ph ys ical Drive
Fu nctions
Model
Se rial Number
Firm ware Re v.
Display Drive
Information
De vice Ca pacity
Cu rrent SATA Mode
Max SATA Mode
De vice St ate
Cr eate P as s
Thr ough Disk
4.1 Display Drive Information
Select the View Drive Information option
and press ENT. Select the drive to display.
The drive information screen shows the
Model Name, Serial Number, Firmware
Rev., Device Capacity, Current SATA
Transfer mode, Supported SATA Transfer,
and Device State.
4.2 Create a Pass-Through Disk
A Pass-through disk can be defined to
dedicate a single disk as not controlled
by the RAID subsystem firmware and thus
cannot be a part of a RAID set. Instead, the
disk is available to the operating system as
an individual disk. To create a Pass-Through E
disk, select the Create Pass-Through Disk
option and press ENT. Select the drive
number to create, and the drive attributes will
be displayed. Select attribute to modify and then
press ENT. Select attribute value and press the
ENT to accept the selection value.
Se lect Drive
IDE C hanne l x
Se lect Drive
ID E C hannel x
Change Cache Mode
*Write Back
<Write-B ack; Write-Through>
Wraps A round
IDE Host Channel
*Channel 0
<0,1,0+1 Cluster>
Wr aps A round
Change Channel 0
Lun Selection
*0-Master
<0-Master, 1-Slave>
Wr aps A round
Cache Mode
Host Channel
Host Ch0 LUN
Ta gged Qu euing
Ch g. Ta gged Queuing
* E nabled
<Ena bled, D isab led>
Wraps A round
Ch g. Sy nc Ra te
* ATA150
<ATA33...ATA150>
Wr aps A round
IDE Transfer Mode
ES C
2
EN T : To Cr eate
ES C : To Abort
2
Change Cache Mode
*Write Back
<Write-B ack; Write-Through>
Wraps A round
IDE Host Channel
*Channel 0
<0,1,0+1 Cluster>
Wr aps A round
Change Channel 0
Lun Selection
*0-Master
<0-Master, 1-Slave>
Wr aps A round
Ch g. Ta gged Queuing
* E nabled
<Ena bled, D isab led>
Wraps A round
Ch g. Sy nc Ra te
* ATA150
<ATA33...ATA150>
Wraps A round
Cache Mode
Host Channel
Selec t Drive
IDE C hannel x
Host Ch0 LUN
Ta gged Queuing
IDE Transfer Mode
Modify Pass
Through Disk
4.3 Modify Pass-Through Disk
ESC
To modify Pass-Through Disk attributes, scroll
EN T : To Modify
to choose the “Modify Pass-Through Drive”
ES C : To Abort
option, and then press ENT. The Select Drive
Function menu will show all Pass-Through
Delete P as s
Select Drive
EN T : To Delete
Are You Su re ?
Drive number items. Select the Pass-Through
Th rough Disk
IDE C hannel x
ESC : T o Abort
EN T : Ye s, ESC :N o
Disk to modify and press ENT. The attributes
screen shows the Pass-Through Disk setting
value currently configured. Select the desired
Identify T he
Select Drive
LE D F lash Method
Identify Dev.
Se lected Device
IDE C hannel x
Flas h S elected
Check Devic e L ED
attribute to modify and Press ENT to modify the
<S elected, Uns elected>
default value. Select attribute value and press
Wraps A round
ENT to accept the selection. After completing
the modification, press ESC to enter the confirmation screen and then press ENT to accept.
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5-RAID Controls-LCD/Terminal
4.4 Delete Pass-Through Disk
To delete pass-through drive from the pass-through drive pool, scroll to choose the “Delete
the Alert
E
Pass-Through Drive option”, and then press ENT.
The Select Mute
Drive
Function menu will show
Beeper
all Pass-Through Drive number items. Select the Pass-Through Disk that user want to delete
Alert Beeper
Alert Beeper
Confirm Change
Setting
*Disabled Press ENT:Yes,
and press ENT. The Delete Pass-Through confirmation screen
will appear.
ENTESC:No
to
<Enabled, Disabled>
confirm deletion.
Change
Password
Confirm Change
ENT:Yes, ESC:No
New Password:
_
4.5 Identify Selected Drive
JBOD/RAID
Operating Mode the Confirm
Change
This function is designed to prevent removing the wrong drive
by illuminating
selected
Function
*RAID
ENT:Yes, ESC:No
disk HDD LED Indicator. To identify selected drive from the physical drive
pool, scroll to
<RAID,JBOD>
Confirm Change
Rebuild Priority
RAID
Rebuild
choose the “Identify Selected Drive” option and press
ENT.
Select
the
Disk
to
identify
and
ENT:Yes, ESC:No
*Low
Priority
RAID System
Functions
press ENT. The selected disk HDD LED indicator will flash.
< Low, Norma l, High>
Wr aps Ar ound
5. RAID System Functions (E)
E
Maximum
SATA Mode
Mute the Alert
Beeper
Alert Beeper
Setting
HDD Read Ahead
Cache
To control the RAID System, Select the “RAID
System Function” option and then press ENT
to enter further submenus. Scroll to select the
submenus and then press ENT to enter the
specified function.
5.1 Mute The Alert Beeper
Select the “Mute The Alert Beeper” function to
mute the RAID subsystem alert buzzer. Press
ENT in the dialog box to turn the beeper off
temporarily. The buzzer will still activate on
any subsequent fault.
RAID System
Functions
PlatinumRAID Pro Owner’s Manual
Confirm Change
ENT:Yes, ESC:No
Staggered HDD
Spinup Control
Staggered Time
*0.7 (Reserved)
Confirm Change
ENT:Yes, ESC:No
JBOD/RAID
Function
Operating Mode
*RAID
Confirm Change
ENT:Yes, ESC:No
HDD SMART
Status polling
SMART
Polling
<RAID,JBOD>
*Enabled
Rebuild Priority
<Enabled,
Disabled>
*Low
Confirm Change
ENT:Yes, ESC:No
Confirm Change
ENT:Yes, ESC:No
RAID Rebuild
Priority
<1200,2400...115200>
5.3 Change Password
The PlatinumRAID’s administrative functions can be
protected with a password. To set or change the RAID
F
subsystem password, scroll to the “Change Password”
selection and press ENT. The New Password: screen
appears, and a new password may be entered. If the
LCD front panel is used, use the UP/DOWN keys
to select the letters and ENT to move to the next
letter; When done, Press ENT repeatedly until the
confirmation screen will be displayed. To disable the
password, press ENT repeatedly in the password field
and ENT in the confirmation screen. The existing
password will be cleared.
Confirm Change
ENT:Yes, ESC:No
Confirm Change
ENT:Yes, ESC:No
<Enabled, Disabled,
New
Password:
Disabled-Maxtor>
_
Maximum SATA Mode
5.2 Alert Beeper Setting
The Alert Beeper setting function item is used to
enable or disable the RAID subsystem controller
alarm tone generator. Scroll to the “Alert Beeper
Setting” selection and press ENT. Press ENT at the
confirmation screen to accept the function.
<SATA150,SATA150+NCQ
SATA320, SATA320+NCQ>
Alert Beeper
*Disabled
Read Ahead Cache
*EnabledDisabled>
<Enabled,
Confirm Change
ENT:Yes, ESC:No
Change
Password
Truncation Mode
F
Maximum SATA Mode
*SATA150
HDD Read Ahead
Cache
Terminal Mode
Configuration
Staggered HDD
Spinup Control
<1, 2>
HDD SMART
Status polling
Firmware Update
Reset The Mode
Truncation
Cont ro ller
<1200,2400...115200>
< Low, Norma l, High>
Wr aps Ar ound
Truncation Mode
*Off (Reserved)
Maximum SATA Mode
*SATA150
Select
Baud Rate
<SATA150,SATA150+NCQ
*115200 SATA320+NCQ>
SATA320,
Read Ahead Cache
Baud Rate
*Enabled
Settings
<Enabled, Disabled,
Disabled-Maxtor>
Number o f Stop
Bit
Staggered Time
*0.7 (Reserved)
Select Stop Bits
*1 Bit
Confirm Change
ENT:Yes, ESC:No
Confirm Change
ENT:Yes, ESC:No
Confirm Change
ENT:Yes, ESC:No
Confirm Change
ENT:Yes, ESC:No
Confirm Change
ENT:Yes, ESC:No
Con firm Ch a nge ?
ENT :Yes , ESC: No
Confirm Change
SMART Polling
ENT:Yes, ESC:No
*Enabled
<Available through Terminal and Web interfaces>
<Enabled, Disabled>
Truncation
Confirm
ChangeMode
*Off (Reserved)
ENT:Yes,
ESC:No
Select Baud Rate
*115200
Confirm Change
ENT:Yes, ESC:No
Confirm Change
ENT:Yes, ESC:No
Baud Rate
Settings
Terminal Mode
Configuration
Number o f Stop
Bit
<1, 2>
Firmware Update
Reset The
Cont ro ller
Select Stop Bits
*1 Bit
Con firm Ch a nge ?
ENT :Yes , ESC: No
<Available through Terminal and Web interfaces>
Confirm Change
ENT:Yes, ESC:No
31
5-RAID Controls-LCD/Terminal
5.4 JBOD/RAID Configuration
The PlatinumRAID controller can be used in JBOD ( Just a Bunch Of Drives) mode, which
allows each drive to be presented separately to the host. To use this mode, make sure to erase
any existing RAID sets.
5.5 RAID Rebuild Priority
The RAID Rebuild Priority is a relative indication of how much time the controller devotes
to a rebuild operation. The RAID subsystem allows user to choose the rebuild priority (low,
normal, high) to balance volume set access and rebuild tasks appropriately.
To set or change the RAID subsystem RAID Rebuild Priority, Select “RAID Rebuild Priority”
option and press ENT. Set the rebuild value at the rebuild priority selection screen that
appears, and press ENT at the confirmation screen.
5.6 Maximum SATA Mode
The PlatinumRAID uses 5 discrete SATA busses for its disk channels. These drive channels
can support up to SATA300 and support NCQ (Native Command Queuing,) A SATA function
controlling dynamic rearranging of data fetching commands for maximum performance.
Please do not change this setting unless instructed by MicroNet’s Technical Support.
5.7 HDD Read Ahead Cache
Enabled by default. Please do not change this setting unless instructed by MicroNet’s Technical Support.
5.8 Staggered HDD Spinup control
The PlatinumRAID employs a staggered disk mechanism startup sequence to minimize power
supply strain. Please do not change this setting unless instructed by MicroNet’s Technical Support.
5.9 HDD SMART Status Polling
The PlatinumRAID reads and reports the SMART (Self-Monitoring, Analysis, and Reporting
Technology) status of each disk drive mechanism. This option is enabled by default, and should
not be disabled unless instructed by MicroNet’s Technical Support.
5.10 Disk Capacity Truncation Mode
Disk Truncation is used to decrease disk usable space for compatibility purposes. Please do
not change this setting unless instructed by MicroNet’s Technical Support.
5.11 Serial Port Configuration
To set or change the RAID subsystem communications port configuration, Scroll to the “COMA
Configuration” selection and press ENT. The baud rate/stop bits setting screen will appear.
Set the new desired values, and press ENT. After completing the modification, the confirmation
screen will be displayed and then press ENT to accept the function. The following are the
acceptable values for each respective field:
Monitored Item
Baud Rate
Stop Bits
Parity
Warning Condition
1200,2400,4800,9600,19200,38400, 57600, 115200
1,2
None
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32
5-RAID Controls-LCD/Terminal
5.12 Reset Controller
To reset the RAID subsystem, select “Reset
Controller” and then press ENT. Press ENT at
the confirmation screen to reset the controller.
!
IMPORTANT: Controller Reset can only be
performed if no host or drive activity is present.
6. Additional System Functions (F)
6.1 Ethernet Configuration
The PlatinumRAID’s Ethernet port is preconfigured for DHCP operation. This menu option
allows the user to reconfigure IP functionality for static IP address or custom MAC address.
6.1.1 DHCP Function
DHCP (Dynamic Host Configuration Protocol) is a protocol that lets network administrators
manage centrally and automate the assignment of IP (Internet Protocol) configurations on a
computer network. Select this option if you wish to use the DHCP address services in your
network. Move the cursor bar to DHCP Function item, then press ENT to show the DHCP
setting. Select the “Disabled’ or ‘Enabled” option to enable or disable the DHCP function.
6.1.2 Manual (Static) IP Address
Select this option to manually configure the IP address of the controller. Make sure that the
assigned IP address is in the same range of your default router address and that it is unique
to your private network. To set a static IP address, move the cursor bar to the Main menu
Ethernet Configuration Function item and then press ENT. The Ethernet Configuration menu
appears on the screen. Move the cursor bar to Local IP Address item, then press ENT to show
F
the default address setting in the RAID controller. You can reassign the IP address of the
controller (use the UP/DOWN keys on the front panel for each digit.)
U320 SCSI
Target Config
6.1.3 HTTP Port Number
The HTTP port number is the TCP Port
used for the web user interface. The default
port is 80, and can be changed per user
specification. To access the web UI with a
port other then 80, point your browser to
http://<IPADDRESS>:<HTTP PORT>
F
DHCP Function
*Enabled
U320 SCSI
Target Config
Ethernet
Configuration
<Enabled, Disabled>
Channel 0 QAS
*Disable
Manual IP Address
*192.168.0.100
<Enabled, Disabled>
<xxx.xxx.xxx.xxx>
HTTP
Number
DHCPPort
Function
*80
*Enabled
Email Notification
Config
Ethernet
Configuration
SNMP
Configuration
Email Notification
Config
View
System
6.1.5 SMTP Port Number
The Default Telnet TCP port is 25, and can
be changed per user specification.
Events
SNMP
Configuration
Clear Event
Buffer
Confirm Change
ENT:Yes,
ESC:No
Confirm Change
ENT:Yes, ESC:No
Confirm Change
Change
Confirm
ENT:Yes, ESC:No
ESC:No
ENT:Yes,
<Enabled, Disabled>
Confirm Change
ENT:Yes,
ESC:No
Confirm
Change
ENT:Yes, ESC:No
<xxx.xxx.xxx.xxx>
SMTP Port Number
*25
HTTP Port Number
*80
Confirm Change
ENT:Yes, ESC:No
Confirm Change
ENT:Yes, ESC:No
Ethernet Mac Address
(Reserved)
Confirm Change
ENT:Yes, ESC:No
Telnet Port Number
*23
SMTP Port Number
*25
Confirm Change
ENT:Yes, ESC:No
View System
Hardware Monitor
Events
Information
ShowEvent
System
Clear
Information
Buffer
Confirm Change
ENT:Yes, ESC:No
Telnet Port Number
*23
Manual IP Address
*192.168.0.100
Ethernet Mac Address
(Reserved)
Confirm Change
ENT:Yes, ESC:No
C ontro l erTe mp.
Confirm Change
ENT:Yes, ESC:No
B ackPl ane Tem p.
F an Spe ed (RP M)
Confirm Change
P ower +12V
ENT:Yes, ESC:No
Power +5V
P ower +3.3V
Confirm Change
ENT:Yes, ESC:No
END
Main Processor
CPU Cache Size
P ower +1.5V
C ontro l erTe mp.
CPU Data Cache
B ackPl ane Tem p.
Firmware Version
F an Spe ed (RP M)
Serial Number
P ower +12V
Power +5V
Hardware Monitor
Information
PlatinumRAID Pro Owner’s Manual
Confirm Change
ENT:Yes, ESC:No
<Enabled, Disabled>
6.1.4 Telnet Port Number
The Default Telnet TCP port is 23, and can
be changed per user specification.
6.1.6 Ethernet Address
A MAC address stands for Media Access
Control address and is your computer’s
unique hardware number. This option
should not normally be modified.
Channel 0 QAS
*Disable
P ower +3.3V
P ower +1.5V
System Memory
Controller Name
Main Processor
CPU Cache Size
CPU Data Cache
System Memory
Show System
Information
Firmware Version
Serial Number
Controller Name
33
5-RAID Controls-LCD/Terminal
6.2 Show System Events
To view the RAID subsystem events, select the “Show System Events” option and press ENT.
The system events logged will be displayed. System events are logged chronologically, and
may be scrolled through.
6.3 Clear all Event Buffers
To clear all events in the system log, scroll to select the “Clear all Event Buffers” option and
press ENT. The confirmation message will be displayed and press the ENT to clear all event
buffers or ESC to abort the action.
6.4 Hardware Information
To view the RAID subsystem controller’s hardware monitor information, Scroll to select the
“Hardware Information” option and press ENT. All hardware information will be displayed.
Scroll to browse all the hardware information. The Hardware Monitor Information provides
the temperature, fan speed (chassis fan) and voltage of the internal RAID subsystem. The
temperature items list the current states of the controller board and backplane.
The Platinum RAID has an audiovisual alert system to inform the user of environmental
failure. The warning messages will indicate through the LCD, LED and alarm buzzer. The
following is a table of monitoring threshhold values:
Monitored Item
Controller Board Temperature
Backplane Temperature
Controller Fan Speed
Power Supply +12V
Power Supply +5V
Power Supply +3.3V
CPU Core Voltage +1.5V
Warning Condition
>
>
<
<
<
<
<
60° Celsius
55° Celsius
1900 RPM
10.5V or > 13.5V
4.7V or > 5.3V
3.0V or > 3.6V
1.35V or > 1.65V
6.5 System Information
Choose this option to display Main processor, CPU Instruction cache/ and data cache size,
firmware version, serial number, controller model name, and the cache memory size. To check
the system information, press ENT to enter the main menu. Scroll to select the Show System
Information option, and then press ENT. All major controller system information will be
displayed. Scroll to browse all the system information.
PlatinumRAID Pro Owner’s Manual
34
6-RAID Controls-Web Interface
Chapter 6 - RAID Controls-Web Interface
Introduction
The PlatinumRAID controller firmware includes a complete HTML-based weblet application that
allows all configuration and monitoring to be performed across any IP based network, and utilizes
standard web browsers for interfacing. This Chapter describes the menu and control structure for
your PlatinumRAID using the web interface. The RAID subsystem configuration utility is firmware
based and its operation is independent of host computer type or operating system.
Preparation
To ensure proper communications between the RAID subsystem and Web browser-based
RAID management, Please connect a standard, Cat5 Ethernet cable to the RJ45 network jack
on the back of your PlatinumRAID and atach to your existing network. In order to access the
web administration utility please note the IP address displayed on the LCD screen. Launch
your firmware-embedded TCP/IP & Web Browser-based RAID manager by entering http://[IP
Address] in your web browser. The RAID subsystem controller default User Name is “admin”
and there is no password assigned from the factory. Please refer to section 6.2 for more
information regarding security.
Login Procedure
The controller will prompt for user ID and password when
initially logging in. The default user ID is “admin” and no
password (leave the password field blank). The PlatinumRAID
ships without a password defined, but is user changeable
to protect the internal RAID subsystem from unauthorized
entry.) Upon login, the unit will display the user interface and
system information as illustrated:
Note:
The Default User ID is
admin
There is no password by default;
leave the password blank when
logging in.
Note:
PlatinumRAID’s web control
applet has been tested for use with
Microsoft Internet Explorer >4.x and
Netscape 4.7/Gecko based browsers
or newer, and Apple Safari. Other
browsers may be compatible, please
check www.micronet.com/support for
the latest information.
PlatinumRAID Pro Owner’s Manual
35
6-RAID Controls-Web Interface
The Main Menu Configuration Tree
1. Quick Volume/RAID Setup
2. RAID Set Functions
 
 
 
 
 
3. Volume Set Functions
 
 
 
 
4. Physical Drives
 
 
5. RAID System Controls
6. System Information
2.1 Create RAID Set
2.2 Delete RAID Set
2.3 Expand RAID Set
2.4 Activate RAID Set
2.5 Create Hot Spare
2.6 Delete Hot Spare
2.7 Rescue RAID Set
3.1 Create Volume Set
3.2 Delete Volume Set
3.3 Modify Volume Set
3.4 Check Volume Set Consistency
3.5 Stop Volume Set Consistency
4.1 Create Pass Through Disk
4.2 Modify Pass-Through Disk
4.3 Delete Pass-Through Disk
4.4 Identify Selected Drive
5.1 System Config
5.2 Ethernet Configuration
5.3 Email Alert Configuration
5.4 SNMP Configuration
5.5 NTP Configuration
5.6 View Events/Mute Beeper
5.7 Generate Test Event
5.8 Clear Event Buffer
5.9 Change Password
5.10 Upgrade Firmware
5.11 Restart Controller
6.1 RAIDset Hierarchy
6.2 System Information
6.3 Hardware Monitor
PlatinumRAID Pro Owner’s Manual
36
1. Quick Volume/RAID Setup
!
CONSIDERATIONS FOR RAID VOLUME CREATION
Your PlatinumRAID is capable of creating large logical volumes (LUNS) in excess of 2 Terabytes,
with the following caveats:
1.Large LUNS (>2TB) can only be accessible via eSATA. Do not map a large LUN to channel 0. Attempting
to access a large LUN over a FireWire or USB port can result in data loss!
2.Large LUNS must be supported by the host bus adapter and the host Operating System. Windows
2003, Vista, Mac OS X 10.4.8+, and Linux distributions with appropriate kernels all support large
LUNS. Windows XP and prior cannot address large LUNS and must use eSATA host bus adapters that
have RAID support. MicroNet offers such host bus adapters- please consult your MicroNet authorized
reseller for more information.
3.The PlatinumRAID Pro can address up to 3 “normal” (<2tb) independent LUNs- 1 mapped to the eSATA
port and 2 mapped to the FireWire or USB ports. Only one of the volumes mapped to the FireWire ports
can be visible over USB.
Quick Volume And RAID Setup is the fastest way to prepare a RAID and volume set. This option
creates a RAID set with the following properties:
1. All of the physical disk drives are contained in a RAID set.
2. The RAID levels associated with hot spare, capacity, and stripe size are selected during the
configuration process.
3. A single volume set is created utilizing all 5 drives in the disk array.
4. For step by step Volume Set functions, please see Chapter 4, section 6.
2. RAID Set Functions
Select the RAID Set Function to manually configure the RAID set for the first time or delete/
reconfigure existing RAID sets. The RAID Set function allows more complete control over the RAID
creation process, but requires more interaction then the Quick Volume/RAID Setup option. To enter
a RAID Set Functions, press ENT to enter the Main menu. Scroll to select the “RAID Set Functions”
option and press ENT to enter further submenus. All the RAID set submenus will be displayed.
2.1 Create A New RAID Set
Please refer to Chapter 4 section 7-”Using RAID Set and Volume Functions” for detailed step by step
procedure reference
2.2 Delete Existing RAID Set
Once this option is selected, a table will appear with the available RAID set(s). check the radio
button next to the RAIDset(s) to be deleted, and check the box labelled “Confirm the operation.”
Click the “Submit” Button. A Confirmation screen appears prior to the deletion.
2.3 Expand Existing RAID Set
Instead of deleting a RAID set and recreating it with additional disk drives, the Expand existing RAID
Set function allows the user to add disk drives to the RAID set that already exists.
When this option is selected, a table will appear with the available RAID set(s). Check the radio
button next to the RAIDset(s) to be expanded, and click the “Submit” Button. if spare drives are
available, they will be listed. Check the radio button next to the drive(s) to add, and check the box
labelled “Confirm the operation.” Click the “Submit” Button. A Confirmation screen appears prior to
the expansion. The new added capacity will be available for new volume sets. To define one or more
volume sets, follow the instruction presented in the Volume Set Function to create the volume sets.
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6-RAID Controls-Web Interface
When RAID migration is in progress, migration status is displayed in the RAID and volume
status areas of the RAID Set information.
!
IMPORTANT: Once the Expand RAID Set process has started it cannot be stopped. The process must
complete before any other RAID functions will be available.
2.4 Activate RAID set
Following a drive failure, the affected RAIDset will operate in degraded mode, and will
continue to function until the unit is reset. Following a reset, in order for a degraded RAIDset
to be available to the host it must be activated. Select “Activate RAID Set” option. A table will
appear with the available RAID set(s). Check the radio button next to the RAIDset(s) to be
deleted, and check the box labelled “Confirm the operation.” Click the “Submit” Button. A
Confirmation screen appears prior to the activation.
2.5 Create Hot Spare Disk
For detailed step by step instructions, Please reference Chapter 4, Section 4- “ Designating
Drives as Hot Spares.”
2.6 Delete Hot Spare Disk
To delete hot spare, choose the “Delete Hot Spare Disk” option. A table will appear with the
available hot spare disks. check the radio button next to the Spare to be deleted, and check
the box labelled “Confirm the operation.” Click the “Submit” Button.
2.7 Rescue RAID Set
In rare cases, It may be possible to recover a failed RAIDset by using this feature. Please make
sure that any failed disk drives have been replaced prior to attempting this procedure. When
this choice is selected, a command prompt will appear. The two command choices available
are ‘RESCUE’ and ‘SIGNAT’. It is strongly recommended you contact MicroNet support prior
to using this function.
2.7.1 If the replaced disk was a member of the RAIDset and is simply out of synchronization,
you may attempt signature recovery by typing ‘SIGNAT’ in the command box, and checking
the “Confirm the operation” checkbox. Click the “Submit” Button.
2.7.2 If the replaced disk is new, you may attempt to force RAID rebuild by typing ‘RESCUE’
in the command box, and checking the “Confirm the operation” checkbox. Click the “Submit”
Button. A Confirmation screen appears prior to operation.
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3. Volume Set Function (C)
A volume set is seen by the host system as a single logical device, and is organized in a RAID
level with one or more physical disks. RAID level refers to the level of data performance and
protection of a Volume Set. A Volume Set capacity can consume all or a portion of the disk
capacity available in a RAID Set, and multiple Volume Sets can exist on a group of disks in a
RAID Set. All Volume Sets created in a specified RAID Set will reside on all the physical disks
in the RAID Set, and the data spread evenly across all the disks in the RAID Set.
3.1 Create RAID Volume Set
!
CONSIDERATIONS FOR RAID VOLUME CREATION
Your PlatinumRAID is capable of creating large logical volumes (LUNS) in excess of 2 Terabytes,
with the following caveats:
1.Large LUNS (>2TB) can only be accessible via eSATA. Do not map a large LUN to channel 0. Attempting
to access a large LUN over a FireWire or USB port can result in data loss!
2.Large LUNS must be supported by the host bus adapter and the host Operating System. Windows
2003, Vista, Mac OS X 10.4.8+, and Linux distributions with appropriate kernels all support large
LUNS. Windows XP and prior cannot address large LUNS and must use eSATA host bus adapters that
have RAID support. MicroNet offers such host bus adapters- please consult your MicroNet authorized
reseller for more information.
3.The PlatinumRAID Pro can address up to 3 “normal” (<2tb) independent LUNs- 1 mapped to the eSATA
port and 2 mapped to the FireWire or USB ports. Only one of the volumes mapped to the FireWire ports
can be visible over USB.
When this option is selected, a table will appear with the available RAIDSets. check the radio
button next to the RAIDSet that will house the volume set, and check the box labelled
“Confirm the operation.” Click the “Submit” Button.
The volume set attributes screen (illustrated right) shows the volume set default configuration
value that is currently being configured.
Enter the desired attributes to
all user fields. Member disks
of the RAIDset and maximum
allowed capacity are displayed
for information only.
The
following subsections discuss
each attributes descriptions.
When all fields are finalized,
check the box labelled
“Confirm the operation,” and
click the “Submit” Button.
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3.1.1 Volume Name
The default volume name will always appear as Volume Set #. You may rename the volume
set name (15 characters maximum.)
3.1.2 Volume RAID Level
PlatinumRAID supports RAID level 0,1, 0+1 (10), 3 and 5.
3.1.3 Capacity
Enter the appropriate volume size to fit your application. If large LUNS are to be used, select
“Enable Large LUN support.” Each volume set has a selected capacity which is less than or
equal to the total capacity of the RAID set on which it resides.
3.1.4 Volume Initialization Mode
PlatinumRAID features both foreground and background initialization modes for RAID 3 and
RAID 5 volumes. In background mode, the initialization proceeds as a background task and
the volume set is fully accessible for system reads and writes without requiring a reboot and
waiting for the initialization completion. Furthermore, the RAID volume set is also protected
against a single disk failure while initialing. Background initialization takes longer to complete
and host disk access will be slower during the initialization process. Foreground Initialization
must be completed before the volume set ready for system accesses, but the format is faster.
3.1.5 Volume Stripe Size
This parameter sets the size of the segment written to each disk in a RAID 0, 1, 3, or 5 logical
drive. You can set the stripe size to 4 KB, 8 KB, 16 KB, 32 KB, 64 KB, or 128 KB. A larger
stripe size produces better-read performance for mostly sequential reads. For better random
reads performance, select a smaller stripe size.
3.1.6 Volume Cache Mode
PlatinumRAID supports Write-Through and Write-Back Caching algorithms. In the Write-Back
caching method, modifications to data in the cache aren’t copied to the cache source until
absolutely necessary, whereas a Write-Through cache performs all write operations in parallel -data is written to the storage and the cache memory simultaneously. Write-back caching yields
somewhat better performance than write-through caching because it reduces the number of
write operations to disk, but is also more prone to data loss due to service interruptions.
3.1.7 Tagged Command Queuing
The Command Tag (Drive Channel) function controls the command tag queuing support
for the drive channels. Tagged Command Queuing is useful for enhancing overall system
performance under multi-tasking operating systems. This function should normally remain
enabled unless instructed otherwise by MicroNet support.
3.1.8 IDE Data Transfer Mode.
The RAID subsystem supports up to 150MB/S host data transfer rate. This field should not be
modified unless instructed by MicroNet technical support.
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3.1.9 Host Channel Selection
PlatinumRAID Pro supports two host channels. Host Channel 0 is the host SATA interface, and
Channel 1 is accessed by the either host FireWire or the USB ports- If both FireWire and USB
ports are connected, only the FireWire ports will be active.
!
SIMULTANEOUS HOST CHANNEL VOLUME MAPPING
The PlatinumRAID Pro can map a Volumeset to both host channels simultaneously for clustering environment.
Never attempt to mount the same volume on both channels without proper clustering software.
Mounting the same volume on both channels without proper software can result in
data corruption or loss!
3.1.10 Host Channel 0 LUN
PlatinumRAID Pro supports 2 logical units on host channel 0, which controls volume sets
accessible via FireWire and USB connections. Any Volume Set may be mapped to either
Host Channel 0 Lun 0-Master, or Lun 1-Slave. Please note that Host channel 0 Lun 1-Slave is
accessible only via FireWire, while Lun 0-Master is accessible via FireWire and USB.
3.2 Delete Volume Set
To delete a Volume Set, choose the “Delete Volume Set” option. A table will appear with the
available Volume Sets. Check the radio button next to the Volume Set to be deleted, and check
the box labelled “Confirm the operation.” Click the “Submit” Button.
3.3 Modify Volume Set
To modify a Volume Set, choose the “modify Volume Set” option. A table will appear with the
available Volume Sets. Check the radio button next to the Volume Set to be modifed, and click
the “Submit” Button. A table will appear with the modifiable attributes (refer to section 3.1 in
this chapter for attribute descriptions.) You can modify all values except the capacity.
Note:
When a volume set is migrating from one RAID level to another, a volume set stripe size changes, or when a disk
is added to a RAID set the volume state will change to migrating. During migration. The migration status will be displayed
in the volume state area of the LCD display. No additional volume changes can be performed until migration completes.
3.4 Check Volume Set Consistency
To check the internal integrity of a Volume Set, choose the “Check Volume Set” option. A table
will appear with the available Volume Sets. Check the radio button next to the Volume Set to
be checked, and check the box labelled “Confirm the operation.” Click the “Submit” Button.
3.5 Stop Volume Set Consistency Check
To stop a consistency check already in progress, choose the “Stop Volume Set Check” option.
A table will appear with the available Volume Sets. check the radio button next to the Volume
Set to be aborted, and check the box labelled “Confirm the operation.” Click the “Submit”
Button.
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4. Physical Drive Functions (D)
4.1 Create a Pass-Through Disk
A Pass-through disk can be defined to dedicate a single disk as not controlled by the RAID
subsystem firmware and thus cannot be a part of a RAID set. Instead, the disk is available to
the operating system as an individual disk. To create a Pass-Through disk, select the Create
Pass-Through Disk option. A table will appear with available disks that are not already
mapped to a RAIDset, hot spare, or existing passthroughs. Check the radio button next to the
desired disk, and enter the values for the attributes listed below. When all fields are finalized,
check the box labelled “Confirm the operation” and Click the “Submit” Button.
4.1.1 Volume Cache Mode
PlatinumRAID supports Write-Through and Write-Back Caching algorithms. In the WriteBack caching method, modifications to data in the cache aren’t copied to the cache source
until absolutely necessary, whereas a Write-Through cache performs all write operations in
parallel -- data is written to the storage and the cache memory simultaneously. Write-back
caching yields somewhat better performance than write-through caching because it reduces
the number of write operations to disk, but is also more prone to data loss due to service
interruptions.
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4.1.2 Tagged Command Queuing
The Command Tag (Drive Channel) function controls the command tag queuing support
for the drive channels. Tagged Command Queuing is useful for enhancing overall system
performance under multi-tasking operating systems. This function should normally remain
enabled unless instructed otherwise by MicroNet support.
4.1.3 IDE Transfer Mode
The RAID subsystem supports up to 150MB/S host data transfer rate. This field should not be
modified unless instructed by MicroNet technical support.
4.1.4 Host Channel Selection
PlatinumRAID Pro supports two host channels. Host Channel 0 is the host SATA interface, and
Channel 1 is accessed by the either host FireWire or the USB ports- If both FireWire and USB
ports are connected, only the FireWire ports will be active.
!
SIMULTANEOUS HOST CHANNEL VOLUME MAPPING
The PlatinumRAID Pro can map a Volumeset to both host channels simultaneously for clustering environment.
Never attempt to mount the same volume on both channels without proper clustering software.
Mounting the same volume on both channels without proper software can result in
data corruption or loss!
4.1.5 Host Channel 0 LUN
PlatinumRAID Pro supports 2 logical units on host channel 0, which controls volume sets
accessible via FireWire and USB connections. Any Volume Set may be mapped to either
Host Channel 0 Lun 0-Master, or Lun 1-Slave. Please note that Host channel 0 Lun 1-Slave is
accessible only via FireWire, while Lun 0-Master is accessible via FireWire and USB.
4.2 Modify Pass Through Disk
To modify the attributes of a pass through disk, choose the “modify Pass Through” option.
A table will appear with the available pass through disks. check the radio button next to the
disk to be modified, and modify the desired attributes in the below table (refer to section 4.1
in this chapter for attribute descriptions.) Click the “Submit” Button to finalize.
4.3 Delete Volume Set
To delete a Pass through disk, choose the “Delete Pass Through” option. A table will appear
with the available pass through disks. check the radio button next to the disk to be deleted,
and check the box labelled “Confirm the operation.” Click the “Submit” Button.
4.4 Identify Selected Drive
This function is designed to prevent removing the wrong drive by illuminating the selected disk
HDD LED Indicator. To identify selected drive from the physical drive pool, choose the “Identify
Drive” option. A table will appear with the available disks. check the radio button next to the
disk to be identified, and click the “Submit” Button. Click the “Reset” button when done.
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5. System Controls
5.1 System Configuration Functions
This menu contains various feature
and environmental options of the
PlatinumRAID. The following subsections
discuss each attribute’s descriptions. When
all desired options are entered, check the
box labelled “Confirm the operation” and
click the “Submit” Button.
5.1.1 System Beeper Setting
This function enables or disables the
RAID subsystem alert buzzer. It is not
recommended to turn the buzzer off as
it will not provide audible cues when
faults occur.
5.1.2 Background Task Priority
The Background Task Priority is a relative indication of how much time the controller devotes
to a background initialization or rebuild operations. The RAID subsystem allows user to
choose the rebuild priority (ultralow, low, normal, high) to balance volume set access and
rebuild tasks appropriately. The lower the priority, the greater the responsiveness of the RAID
to host activity, but at a cost of longer background task completion.
5.1.3 Terminal Port Configuration
The RAID subsystem communications port configuration defaults to 115200 Baud., 1 Stop bit
operation. The baud rate (1200-115200) and stop bits (1,2) are user selectable. Handshaking
and parity are fixed at none
5.1.4 JBOD/RAID Configuration
The PlatinumRAID controller can be used in JBOD ( Just a Bunch Of Drives) mode, which
allows each drive to be presented seperately to the host. To use this mode, make sure to erase
any existing RAID sets.
5.1.5 Maximum SATA Mode
The PlatinumRAID uses 5 discrete SATA busses for its disk channels. These drive channels
can support up to SATA320 and support NCQ (Native Command Queuing,) A SATA function
controlling dynamic rearranging of data fetching commands for maximum performance.
Please do not change this setting unless instructed by MicroNet’s Technical Support.
5.1.6 HDD Read Ahead Cache
Enabled by default. Please don’t change this setting unless instructed by MicroNet Technical Support.
5.1.7 Staggered HDD Spinup control
The PlatinumRAID employs a staggered disk mechanism startup sequence to minimize power
supply strain. Please do not change this setting unless instructed by MicroNet’s Technical Support.
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5.1.8 HDD SMART Status Polling
The PlatinumRAID reads and reports the SMART (Self-Monitoring, Analysis, and Reporting
Technology) status of each disk drive mechanism. This option is enabled by default, and
should not be disabled unless instructed by MicroNet’s Technical Support.
5.1.9 Disk Capacity Truncation Mode
Disk Truncation is used to decrease disk usable space for compatibility purposes. Please do
not change this setting unless instructed by MicroNet’s Technical Support.
5.2 Ethernet Configuration
This menu contains The
Ethernet specific functions
of the PlatinumRAID. The
following
subsections
discuss each attribute’s
descriptions. When all
desired options are entered,
check the box labelled
“Confirm the operation” and
click the “Submit” Button.
5.2.1 DHCP Function
DHCP (Dynamic Host
Configuration Protocol) is
a protocol that lets network
administrators
manage
centrally and automate the
assignment of IP (Internet
Protocol) configurations on
a computer network. Select
this option if you wish to use
the DHCP address services
in your network. DHCP may
be “Disabled’ or ‘Enabled.”
Note:
By Default, the PlatinumRAID’s Ethernet port is preconfigured
for DHCP operation
5.2.2 Manual (Static) IP Address
Select this option to manually configure the IP address of the controller. Make sure that the
assigned IP address is in the same range of your default router address and that it is unique
to your private network.
5.2.3 Gateway IP address
If a static IP address is assigned, Enter the router address of your network in this field.
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5.2.4 Subnet Mask
If a static IP address is assigned, enter your network subnet mask in this field. If you don’t
know your network’s subnet mask, consult your network administrator.
Note:
5.2.5 HTTP Port Number
The PlatinumRAID cannot use ports 7168-8191 for IP services.
The HTTP port number is the TCP Port used for the web
user interface. The default port is 80, and can be changed
per user specification. To access the web UI with a port other then 80, point your browser to
http://<IPADDRESS>:<HTTP PORT>
5.2.6 Telnet Port Number
The Default Telnet TCP port is 23, and can be changed per user specification.
5.2.7 SMTP Port Number
The Default Telnet TCP port is 25, and can be changed per user specification.
5.2.8 Ethernet MAC Address
A MAC (Media Access Control) address is your computer’s unique hardware number. This
option should not normally be modified.
5.3 Alert by Mail Configuration
The PlatinumRAID features an
SMTP manager, and can send email
notifications for various RAID
subsystem conditions. The following
subsections discuss each attribute’s
descriptions. When all desired
options are entered, check the box
labelled “Confirm the operation”
and click the “Submit” Button.
5.3.1 SMTP Server IP address
The SMTP (Simple Mail Transport
Protocol) server is an external server
that relays your network’s outgoing
mail. Enter your network’s SMTP
server’s network IP address in this
field. If you do not know your
SMTP server’s IP address, consult
your network administrator.
5.3.1
5.3.2
5.3.3
5.3.4
5.3.5
5.3.2 Sender Name and Credentials
In the sender name field, enter a name that will identify the PlatinumRAID as the sender of
the email. “PlatinumRAID” or the attached host name would be most appropriate. The mail
address is not important, but should be used to validate the PlatinumRAID as the sender. The
user Account and password fields may be required to authenticate the PlatinumRAID to the
SMTP server- consult your network administrator for more information.
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5.3.3 Recipients
The PlatinumRAID can send notifications to up to 4 recipients. Enter the respective names and
email addresses in this section.
5.3.4 Event Notification Configuration
This table allows the administrator to specify the level of notification provided by the
PlatinumRAID. Check the radio button next to the desired notification leve. The available
choices are:
Notification Level
Description
Disable Event Notification
Urgent Error Notification
Serious Error Notification
Warning Error Notification
Information Notification
No Event Notification Will Be Sent
Send Only Urgent Event
Send Urgent And Serious Event
Send Urgent, Serious And Warning Event
Send All Event
5.3.5 Notification for No Event
Check the box next to “Notification for no event” to receive periodic emails when no event
occurs. This option is beneficial for remote assurance of continuous proper operation.
5.4 SNMP Configuration
The PlatinumRAID supports Simple Network Management Protocol (SNMP) agent for monitoring
by an SNMP-based management application (also known as an SNMP manager) can monitor
the disk array. If you are
already running an SNMP
management application at
your site, it can monitor
the PlatinumRAID. Consult
your SNMP management
software documentation
before entering the relevent
information into the fields.
When all desired options
are entered, check the
box labelled “Confirm the
operation” and click the
“Submit” Button.
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5.5 NTP (Network Time Protocol) Configuration
The PlatinumRAID can synchronize its internal clock to an outside Network Time (NTP)
server. This option allows for configuration of the NTP service. To obtain an NTP server, check
with your network administrator or for a list of public servers refer to the NTP Public Services
Project at http://ntp.isc.org. When all desired options are entered, check the box labelled
“Confirm the operation” and click the “Submit” Button.
5.6 View Events/Mute Beeper
Use this entry to view events. If the buzzer is active, you may temporarily mute it using this
option.
5.7 Generate Test Event
The PlatinumRAID can generate test events to confirm remote notifications are properly
working. To generate a test event, select “Generate Test Event,” check the box labelled
“Confirm the operation” and click the “Submit” Button.
5.8 Clear Event Buffer
Select “Clear Event Buffer” to clear the event log. To complete the operation, check the box
labelled “Confirm the operation” and click the “Submit” Button.
5.9 Modify Password
The PlatinumRAID’s administrative functions can be protected with a password. To set or
change the RAID subsystem password, select “Modify Password”. The following screen has
three fields- Enter original password, Enter New Password, and Confirm (Re-Enter) New
Password. Type the current password in the “Enter Original Password” field (leave blank if no
current password defined.) Enter and reenter the new password in the next two fields (the
entries are case sensitive) to set a new password. To complete the operation, check the box
labelled “Confirm the operation” and click the “Submit” Button.
5.10 Upgrade Firmware
The PlatinumRAID’s firmware (operating control software) can be field upgradable. MicroNet
Support may direct you as to the operation of this option.
5.11 Restart Controller
To reset the RAID subsystem, select “Reset Controller” , check the box labelled “Confirm the
operation” and click the “Submit” Button.
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6. Information Functions
6.1 RAIDSet Hierarchy
This option will display the current physical and logical configuration of the RAID subsystem.
The RAIDset(s), IDE Channels, and Volume Set(s) are each clickable, and will pull up the
respective information about each object.
6.2 System Information
Choose this option to display various components of the PlatinumRAID, as illustrated in this table:
Component
Value
Controller Name
Firmware Version
BOOT ROM Version
MPT Firmware Version
Serial Number
Unit Serial #
Main Processor
CPU ICache Size
CPU DCache Size
System Memory
Current IP Address
PlatRAID
V1.39 2006-2-10
V1.39 2005-12-6
1.3.39.0
xxx
400MHz I80219
32KBytes
32KBytes / Write Back
128MB / 200MHz
192.168.20.164
6.3 Hardware Information
To view the RAID subsystem controller’s hardware monitor information, select the “Hardware
Information” option. All hardware environmental information will be displayed. Scroll to browse
all the hardware information. The Hardware Monitor Information provides the temperature,
fan speed (chassis fan) and voltage of the internal RAID subsystem. The temperature items
list the current states of the controller board, backplane, and disk drives.
The Platinum RAID has an audiovisual alert system and remote notification to inform the user
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of environmental failure. The warning messages will indicate through the LCD, LED and alarm
buzzer, as well as remote notification as defined in section 5.4 in this chapter. The following
is a table of monitoring threshold values:
Monitored Item
Controller Board Temperature
Power Supply +12V
Power Supply +5V
Power Supply +3.3V
DDR Supply Voltage +2.5V
CPU Core Voltage +1.3V
SATA Chip +1.2V
Controller Fan Speed
HDD #1 Temperature
HDD #2 Temperature
HDD #3 Temperature
HDD #4 Temperature
HDD #5 Temperature
Warning Condition
>
<
<
<
<
<
<
<
>
>
>
>
>
60° Celsius
10.5V or > 13.5V
4.7V or > 5.3V
3.0V or > 3.6V
2.25V or > 2.75V
1.17V or > 1.43V
1.05V or > 1.35V
1900 RPM
60° Celsius
60° Celsius
60° Celsius
60° Celsius
60° Celsius
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7-Host Computer Setup
Chapter 7 - Host Computer Setup
This chapter is an overview of setting up storage volumes on Macintosh and Windows
based computers. To ensure complete installation and ease of use, take a few minutes
to read this chapter before installation.
1. Volume Setup on Apple Macintosh
Installation on a MacOS system requires MacOS X or greater, and any of the following:
1. Compatible SATA Host Bus Adapter with external ports.
2. FireWire 800 or FireWire 400 ports
3. USB 2.0 port
!
Before you begin, please make sure you are logged in with administrative
privileges. If you are unsure about your privilege level, please consult your
Macintosh OS-X user manual or with your system administrator.
Launch the “Disk Utility” application located under Applications/Utilities folder.
Highlight your new drive and select the “Erase” tab, select the desired file system
format, and click the “Erase” button. Your PlatinumRAID is ready to use!
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2. Volume Setup on Microsoft Windows 2000/XP/2003
Installation on a Windows system requires a Windows Installation with a properly installed
and configured SCSI host bus. Please verify that your assigned SCSI ID is unique among the
host SCSI chain, and verify that the terminator is attached and lit at the end of the chain.
2.1 Open the disk management console. A list of the attached drives and their respective
volumes will appear. Each Volume set will appear as an individual disk in the management
console. Upon the first time the PlatinumRAID is connected, a “Initialize and Convert Disk
Wizard” should appear when the disk management console is run. You may use the Wizard to
set up the volume, or follow the next steps for manual configuration.
Note:
The Disk Management Console can be found under \Windows\System32\diskmgmt.msc on your system
drive. For an illustrated guide, please see http://www.fantomdrives.com/support/faqs/hdfaqpc.php4#8
2.2 Right-click on a PlatinumRAID volume. if it’s not initialized, a red “Do Not Enter” logo will cover
the disk icon. Right click on the disk and select “Initialize Disk.” Follow the on-screen instructions.
2
3
2.3 Right click the initialized volume (The area right of the disk icon.) In the context menu,
select “New Partition.” Follow the on screen instructions. In the File System pop-up menu,
select NTFS. The default formatting option is Full format. A Full format will take about 30-90
minutes. A Quick format will take just a few minutes, but will do less verifying of the Drive
than a Full format. Click Start. Once the format process is complete, your PlatinumRAID is
ready to use.
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8-Troubleshooting
Chapter 8 - Troubleshooting
Daily Use Tips
• Read this User’s Guide carefully. Follow the correct procedure when setting up the device.
• Additional application software may have been included with your drive. Please review the
documentation included with this software for information on the operation and support
of this software. The documentation can usually be found in an electronic format on the
installation CD.
• Always operate your drive on a steady, level surface. Do not move the unit while it’s turned on.
• Plug your drive into a grounded electrical outlet. The use of “ground-defeating” adapters
will cause damage not covered by your warranty.
• Do not open your hard drive or attempt to disassemble or modify it. Never insert any
metallic object into the drive to avoid any risk of electrical shock, fire, short-circuiting or
dangerous emissions. Your drive contains no user serviceable parts. If it appears to be
malfunctioning, contact MicroNet Support.
• PlatinumRAID is compatible with the leading hard disk repair and defragmentation software. We recommend using this software to maintain peak performance and data-integrity of
your drive. Contact your local software retailer for more information about the software
best suited for your computer.
General Use Precautions
• Do not expose the hard drive to temperatures outside the range of 5°C (41°F) to 45°C
(104°F). Doing so may damage the drive or disfigure its casing. Avoid placing your drive
near a source of heat or exposing it to sunlight (even through a window.)
• Never expose your device to rain, or use it near water, or in damp or wet conditions. Doing
so increases the risk of electrical shock, short-circuiting, fire or personal injury.
• Always unplug the hard drive from the electrical outlet if there is a risk of lightning or if it
will be unused for an extended period of time.
• Do not place the drive near sources of magnetic interference, such as computer displays,
televisions or speakers. Magnetic interference can affect the operation and stability of your
PlatinumRAID.
• Do not place heavy objects on top of the drive or use excessive force on it.
• Never use benzene, paint thinners, detergent or other chemical products to clean the outside
of the PlatinumRAID. Instead, use a soft, dry cloth to wipe the device.
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8-Troubleshooting
Frequently Asked Questions
General FAQ
Q:My computer will not recognize the drive
A: Make sure the software for your drive is installed, following the instructions in this manual.
Disconnect the drive and power the unit off. Wait 15 seconds, then power your drive back on.
Wait 5 more seconds, then reconnect the drive to your computer system.
Q:Can I increase my PlatinumRAID’s volume capacity?
A: Larger drive modules may be available for your Model. Consult your MicroNet reseller for
more information.
Q:Can I have more than one PlatinumRAID in the network?
A: Yes. Please call MicroNet Help Desk if you have questions about your particular
configuration.
Q: What is the warranty period for PlatinumRAID?
A: PlatinumRAID’s standard warranty is One-year limited. Optional extended warranty and
overnight exchange programs are available, consult your Micronet dealer or www.MicroNet.
com for information.
Q: The PlatinumRAID reports Disk capacity is ‘1250GB’, But when I connect it to the computer,
The OS reports the disk capacity as 1165GB. Where are the missing capacity go?
A: There are two ways to calculate Gigabyte (GByte): Using base 2 or using base 10. Disk drive
manufacturers use the base 10 “1000” definition, which defines a GByte as 1000 x 1000 x 1000.
Many operating systems report disk capacity using Base 2 nomenclature, which define a GByte
as 1024 x 1024 x 1024. Regardless of which scheme is used, you have exactly the same about
of usable capacity.
Q: I’m trying to access the PlatinumRAID using the front panel. When I push enter, it asks me to
verify the password. I defined a password, and I enter it, but then the ENT key just moves the
cursor over another space and the arrow keys change the characters to use and the ESC take me
back to the IP Address screen.
A: Please press the ENT key to move the cursor over another space until the end of the password
line is reached (16 character including space) to confirm the password.
Q: Can I boot from my PlatinumRAID?
A: Yes! As long as your host hardware and operating system support booting from FireWire,
SATA, or USB. Refer to your computer’s documentation for more information
Q: Files are missing or corrupted
A: Run your computer’s disk repair utility.
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8-Troubleshooting
Macintosh related FAQ
Q: Disk Utility does not display my drives (Mac)
A:If the options in Disk Utility are dimmed, you are not logged in as administrator. If you
know the name and password for an administrator, click the lock icon (see Chapter 7) and
enter the information. If the devices are still not appearing, turn off the PlatinumRAID,
check all cable connections, wait 10 seconds and re-power on the PlatinumRAID. You may
need to reboot your Macintosh for the drives to be seen.
Q: Can I connect IEEE1394A FireWire 400 devices such as video cameras or decks to the
FireWire 800 bus?
A: While the FireWire protocol allows for daisy chaining, many video capture devices and
cameras have very high bus voltage requirements and may damage FireWire devices that
are daisy chained. Please make sure to use a SEPERATE FIREWIRE BUS to attached any
FireWire Audio Visual hardware.
Q: Why is my Drive asking me to format it? It was already formatted and it contains data.
A1: Run a disk repair utility on the drive.
A2: Perform permission repair on your system drive. Open the disk utility (located in /
Applications/Utilities/Disk Utility.app.) Select your system drive (usually the first disk listed)
and click "Repair Disk Permissions" in the "First Aid" Tab.
A3: Restart your computer. As soon as the bootup chime sounds, press and hold down the
option-command-p-r key combination to reset the PRAM. Release the keys when the chime
sounds a second time.
Please refer to your Mac manual for more information on these procedures
Q: My computer does not recognize the Drive.
A: First, check to make sure that all of your connections are secure, and that the power switch
is in the "ON" position. Then check if your External Hard Drive is listed in the Apple System
Profiler. If the problem persists, verify that the USB port used is functioning.
Q: I'm trying to copy files to/from FAT32 volumes or network shares, and it keeps failing.
A: FAT32, HFS+, and other file system formats allow different standards of filename length or
use of special characters. Rename the offending file(s) and try the operation again.
Q: I have a FAT32 disk, and when I try to copy a large file I get an error saying there is not
enough room on the drive-- I have lots of free space!
A: FAT32 only allows files up to 4GB in size. To copy larger files, please reformat the volume
using MacOS Extended Format.
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8-Troubleshooting
Windows related FAQ:
Q: I do not see my Drive listed in the My Computer window, but it does appear in the Device
Manager list.
A: Right-click on My Computer. Select Manage in the pop-up menu. In the Computer Management
window, select Storage, then select Disk Management. In the Disk Management window,
you should see a list of available storage devices. Look for the Disk that has a capacity
closest to your Fantom Drives External Hard Drive. Right-click on the right-hand box; in the
pop-up menu select Delete Partition. Once you do this, it will say “Online" & "Unallocated”.
Right-click on the box and select Create New Partition in the pop-up menu. When the
Partition Wizard appears, select Primary Partition and click on Next. You will see a default
value for the Drive; click Next. You will then see a drive letter (you can change this drive
letter if you wish); click Next. You will then be asked to format the Drive.
Q: Where are the drivers for 2000/XP/2003?
A: Windows 2000 and XP already include all the necessary drivers! No additional drivers are
necessary.
Q: Does the Drive work with Norton Ghost?
A: Yes. Norton Ghost 2003 or newer support USB drives. Fantom Drives does not provide any
additional drivers.
Q: Do you have “DOS Driver” for the Drive?
A: No.
Q: Is the Drive compatible with Windows NT 4.0?
A: No.
Q: When I leave my computer idle for a while, my Drive won’t work properly.
A: The most likely cause is that your computer is going into sleep mode. The immediate
solution is to shut down your computer and turn off the Drive, and then restart your
computer. Once your computer is completely booted up, turn on the Drive. You should
see the drive in the Windows Explorer. To prevent this problem from recurring, open the
“Power Settings/Energy Saver” and set it to never go into sleep mode.
Q: After I connected the Drive to my PC, I got the following alert message: HI-SPEED USB
Device Plugged into non-HI-SPEED USB Hub.” What does this mean?
A: Windows 2000 and XP users will get this alert message if you plugged the Drive into a
USB port that only supports USB 1.1. This is fine, except your Drive will operate USB 1.1
speeds.
If an issue cannot resolved by using our FAQ, please contact Technical Support via the Fantom
Drives support site at http://www.FantomDrives.com/help
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A-Getting Help
Appendix A: Getting Help
If you experience problems with your PlatinumRAID, please contact your Authorized
MicroNet Reseller for assistance. If the reseller is unable to resolve your issue, please contact
MicroNet’s Help Desk for assistance. Please have the model, serial number, date of purchase,
and reseller’s name available before making contact. If possible, call from a telephone near
the system so we can direct you in any necessary system corrections.
How To Contact MicroNet Technology, Inc.
MicroNet Technology, Inc.
19260 Van Ness Avenue
Torrance, CA 90501
(310) 320-7272 Sales
(310) 328-0202 Sales Fax
(310) 320-0772 Help Desk & Customer Service
http://www.MicroNet.com
MicroNet Technology can also be reached via email at the following addresses:
Sales: [email protected]
Help Desk: [email protected]
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B-RAID Level Comparison Table
Appendix B: RAID Level Comparison Table
RAID
Level
0
1
10
3
5
Description
Min. Max.
Capacity Data
Drives Drives
Reliability
Also known as striping
1
5
(N)
No data
Data distributed across multiple drives
Disks
Protection
in the array. There is no data protection
Also known as mirroring
2
2
1 Disk Higher than
All data replicated on N
RAID 3,5
Separated disks. N is almost always 2.
This is a high availability
Solution, but due to the 100% duplication, it is also a costly solution.
Data
Transfer Rate
Very High
I/O
Request Rates
Very High for
Both Reads and Writes
Reads are higher
Than a single disk;
Reads are twice faster than
a single disk;
Also known as Block-Interleaved Parity. 4
Data and parity information is subdivided and distributed across all disk.
Parity must be the equal to the smallest
disk capacity in the array. Parity information normally stored on a dedicated
parity disk.
Also known as Bit-Interleaved Parity.
3
Data and parity information is subdivided and distributed across all disk.
Parity must be the equal to the smallest
disk capacity in the array. Parity information normally stored on a dedicated
parity disk.
Also
known
Block-Interleaved 3
Distributed Parity.
Data and parity information is subdivided and distributed across all disk.
Parity must be the equal to the smallest
disk capacity in the array. Parity information normally stored on a dedicated
parity disk.
Transfer rates more similar Reads are twice faster than
to RAID 1 than RAID 0
a single disk;
4
(N/2)
Disks
Higher than
RAID 3,5
Writes similar to a single Write are similar to a single
disk
disk.
Writes are similar to a single disk.
5
(N-1)
Disks
Lower than RAID 1, 10
Reads are similar to
RAID 0;
Higher than a single drive
Reads are approximately
twice as fast as a single
disk;
Writes are slower than a
single disk
Writes are similar to a single disk.
5
PlatinumRAID Pro Owner’s Manual
(N-1)
Disks
Lower than RAID 1, 10
Reads are similar to
RAID 0;
Reads are similar to
RAID 0;
Higher than a single drive
Writes are slower than a Writes are slower than a
single disk.
single disk
58
C-Terminal Session Setup
Appendix C: VT-100 Terminal Session Setup
By connecting a VT100 compatible terminal, or a PC operating in an equivalent terminal
emulation mode, all RAID subsystem monitoring, configuration and administration functions
can be exercised from the VT100 terminal.
There are a wide variety of Terminal Emulation packages, but for the most part they should
be very similar. The following setup procedure is a sample VT100 Terminal session utilizing
Hyper Terminal use Version 3.0 or higher.
Step 1: Most versions of Windows include HyperTerminal, Typically located in Start menu > Programs -> Accessories -> Communications -> Hyper Terminal. Please see your Microsoft
Windows™ Documentation for more information about HyperTerminal.
Step 2: Open HYPERTRM.EXE.
Step 3: Enter a name for your Terminal Session and Click OK.
Step 4. Select an appropriate connecting port in your Terminal. Click OK
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C-Terminal Session Setup
Step 5: Configure the port parameter settings. Bits per second: “115200”, Data bits: “8”,
Parity: “None”, Stop bits: “1”, Flow control: “None”. Click OK
Step 6: Open the File menu, and then open Properties.
Step 7: Open the Settings Tab.
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C-Terminal Session Setup
Step 8. Open the Settings Tab. Function, arrow and ctrl keys act as: Terminal Keys,
Backspace key sends: Crtl+H, Emulation: VT100, Telnet terminal: VT100, and Click OK.
The VT-100 session is now configured. Press “X” key to display the disk array Monitor
Utility screen on your VT100 Terminal.
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D-Glossary
Appendix D Glossary
ATA Acronym for “AT Bus Attachment” - a standard interface to IDE hard disks. Western
Digital’s IDE disk interface was standardized by ANSI to form the ATA specification using a
16-bit ISA bus.
Cache cache is a fast-access memory bank that serves as an intermediate storage for data that
is read from or written to secondary storage. Typically, high-speed caches are implemented in
RAM, though they can also be implemented on disk when speed is not a critical requirement.
Caches generally improve the efficiency of read operations due to the principles of “spatial
and temporal locality of data”. They can also improve the efficiency of write operations. See
also: Write Back Cache, Write Through Cache
Degraded Mode/Status All arrays, with the exception of RAID 0, are designed to handle
disk failures. However, there is limit on the number of hard disks that can fail before the
array is rendered inoperative. For instance, this limit value is 1 for RAID 1, 3, and 5. In the
case of RAID 10 or 50, the upper bound is equal to the number of parity groups. When the
number of disk failures occurring in an array are less than or equal to this upper bound, the
array is denoted to be in a degraded state. The failure of the disks does not impair reading
from or writing to the array. However, it impairs the efficiency of throughput in all RAID
types (with the exception of RAID 1) since data requested by read operations may have to be
“reconstructed” using parity. In the case of RAID 1 the throughput of read operations is cut in
half if a drive fails. Operating in degraded mode is considered an acceptable alternative only
for short durations. Generally this duration should span no more time than that required to
inform the user of the failures and to replace the failed disks with suitable spares.
Dirty Data Dirty data is data that has been written to a cache but has not been “flushed,” or
written to its final destination, typically some secondary storage device.
Disk Array A Disk Array is a logical disk comprised of multiple physical hard disks. The
number of hard disks in an disk array is dictated by the type of the array and the number of
spares that may be assigned to it. Furthermore, whether a disk array can be built using part
of the space on a disk (as opposed to being forced to use the whole disk) depends upon the
implementation. Disk Arrays are typically used to provide data redundancy and/or enhanced
I/O performance.
Disk Block Data is stored on disks in blocks that are generally of a predefined size. This size
is typically a value such as 512 bytes, 1 KB, 2 KB, etc. When a record is written to a disk, the
blocks used for that record are dedicated to storing the data for that record only. In other
words two records are not permitted to share a block. Consequently, a block may be only
partially used. For instance, assume a disk has a block size of 1 KB and a user record written
to it has a size of 3148 bytes. This implies that the user record will be written into 4 blocks,
with the contents of one of the blocks being only partially filled with (3148 – 3072) 76 bytes
of data.
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D-Glossary
Driver A piece of software that controls a hardware device. Typically drivers provide an
interface by which applications can use the device in a uniform and hardware-independent
manner.
DHCP (Dynamic Host Configuration Protocol) a protocol that lets network administrators
manage centrally and automate the assignment of IP (Internet Protocol) configurations on
a computer network. When using the Internet’s set of protocols (TCP/IP), in order for a
computer system to communicate to another computer system it needs a unique IP address.
Without DHCP, the IP address must be entered manually at each computer system. DHCP
lets a network administrator supervise and distribute IP addresses from a central point. The
purpose of DHCP is to provide the automatic (dynamic) allocation of IP client configurations
for a specific time period (called a lease period) and to eliminate the work necessary to
administer a large IP network.
Ethernet A local-area network standard that is currently the most prevalent with an estimated
80% of desktops connected using this standard. It was developed jointly by Xerox, DEC and
Intel and employs a bus or star topology.
Fibre Channel A high-speed, full duplex serial communication scheme permitting data
transfer rates of up to 4 Gigabit per second with a roadmap extending up to 10 Gigabit per
second. The actual transfer rates and the distance over which they apply vary depending on
the physical media used such as video coaxial, shielded twisted pair, single/multi mode optical
fiber etc.
File System A file system is a layer between applications and the disks to which their I/O
is directed. File systems serve to hide the details of the physical layout of files on the disk,
allowing applications to address files as a contiguous logical area on disk accessible by a
name regardless of their physical location on the storage device.
Hot Spare One or more disks in a RAID array may fail at any given time. In fact, all RAID
types with the exception of RAID 0 provide methods to reconstruct the array in the event of
such an occurrence. A commonly used tactic is to earmark a hard disk that is not being used
by any RAID array as a backup. In the event a hard disk in a RAID array fails, this backup
is automatically mobilized by the RAID controller to step in place of the failed hard disk.
The data in the failed hard disk is “reconstructed” and written into the new hard disk. In the
case of a RAID 1, data is reconstructed by simply copying the contents of the surviving disk
into the spare. In the case of all other RAID types, reconstruction is performed using parity
information in the working hard disks of that RAID array. This backup hard disk is known as
a “hot” spare since the fail-over process is performed dynamically on a server within the same
session i.e., without the necessity for re-booting or powering down.
IDE Acronym for “Integrated Device Electronics”. A hard disk drive interface standard
developed by Western Digital and introduced. Also knows as Parallel ATA.
Logical Drive A logical drive is comprised of spaces from one or more physical disks and
presented to the operating system as if it were one disk.
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D-Glossary
Logical Unit (LUN) a SCSI protocol entity which may be addressed by the actual input/
output (I/O) operations of a Logical Drive. Each SCSI-type target provides one or more logical
units.
Native Command Queuing (NCQ) a technology designed to increase performance of SATA
hard disks by allowing the disk firmware to internally optimise the order in which read and
write commands are executed. This can result in increased performance for workloads where
multiple simultaneous read/write requests are outstanding, which occurs most often in servertype applications.
Online Capacity Expansion The ability to add space to an existing RAID array within a
session while preserving the RAID type and data within the array is known as online capacity
expansion. The availability of this feature enables the user to add space to a RAID array as and
when required without rebooting, thereby obviating the need for precise forecasts of capacity
requirements for the future.
Parity A mathematical function that serves as a method for error verification and correction.
In strict technical terms the parity of a group is set to 1 if the number of bits in the group that
are set to 1 is odd, and 0 otherwise. For instance, the parity of N bytes of data is obtained by
determining the number of ith bits in the N bytes that are set to 1. If that number is odd, then
the ith bit of the result is set to 1. This may sound complicated, but in reality the result can
be obtained by simply evaluating the XOR of the N bytes. Parity allows one error in a group
(of bytes) to be corrected.
Parity Group Complex RAID types such as RAID 10 or RAID 50 are built using two levels
of hierarchy. For instance, consider a RAID 50. A RAID 50 array is comprised of a group of
RAID 5 arrays at the first tier. Each RAID 5 array in the first tier is used just like a hard disk
in creating a RAID 0 at the next tier. The result is a RAID 50. In this example, each RAID 5
array at the first tier is denoted as a parity group. Each parity group is self-contained in the
sense that it is capable of withstanding a disk failure within its group and reconstructing the
data in the failed disk from parity information contained within that group.
Partition The space contributed to each array on a physical drive is referred to as a
partition.
PCI An acronym for “Peripheral Component Interconnect”. It is Intel’s local bus standard
that supports up to four plug-in PCI cards per bus. Since PCs can have two or more PCI
buses, the number of PCI cards they can support are a multiple of four. The current PCI
bus implementation (version 2.2) incorporates two 64-bit slots at 66 MHz. Consequently, the
highest throughput achievable using such a bus is 528 MB/sec.
PCI-X An enhanced version of PCI version 2.2. It supports one PCI slot per bus when running
at 133 MHz, two slots when running at 100 MHz and four slots when running at 66 MHz.
It is intended to provide throughputs in excess of 1 GB/sec using a 64-bit wide 133 MHz
implementation.
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D-Glossary
Performance Performance is an important criterion on which a customer judges a RAID
controller. There are a number of popular benchmarking utilities that are available to
measure the I/O performance of a controller. Some of these utilities simulate specific real-life
applications and provide the user a score indicating the controller’s overall performance in
that niche. Others allow the user to specify tests with specific I/O characteristics and generate
throughput numbers corresponding to each specification. The nature of the tests a user may
wish to conduct on a controller depends on the application space in which that controller is
anticipated to be deployed.
Physical Drive A single tangible drive is referred to as a physical drive.
Primary Storage Main memory i.e., RAM is frequently referred to as primary storage.
RAID Abbreviation of Redundant array of independent disks. It is a set of disk array
architectures that provides fault-tolerance and improved performance.
RAID Type There are a number of RAID formats that are widely used. Some of the well-known
uni-level types are RAID 0, RAID 1, RAID 3, RAID 5 and RAID 6. The prevalent complex types
are RAID 10 and RAID 50. ,
RAID 0 RAID 0 utilizes simple striping, with the data being distributed across two or more
disks. No data redundancy is provided. The figure below illustrates a purely hypothetical
RAID 0 array comprised of three disks – disks A, B, and C – with four stripes – each uniquely
colored – across those disks. Advantage: Striping can improve the I/O throughput by allowing
concurrent I/O operations to be performed on multiple disks comprising the RAID 0 array.
However, this RAID type does not provide any data redundancy.
RAID 1 An array that uses a single pair of disks. Both disks in the pair contain the same
data It provides the best data protection but can’t improve system performance. And storage
space for the same data capacity should be double than in general cases. Hence storage cost
doubles. The capacity of RAID 1 will be the size of the smaller HDD, so we suggest you
connect HDDs of the same sizes to save HDD space. Advantage: RAID 1 ensures that if one
of the disks fails, its contents can be retrieved from the duplicate disk. Furthermore, a RAID
1 array can also improve the throughput of read operations by allowing separate reads to be
performed concurrently on the two disks.
RAID 3 RAID 3 utilizes a striped set of three or more disks with the parity of the strips (or
chunks) comprising each stripe written to a disk. Note that parity is not required to be written
to the same disk. Furthermore, RAID 3 requires data to be distributed across all disks in the
array in bit or byte-sized chunks. Assuming that a RAID 3 array has N drives, this ensures that
when data is read, the sum of the data-bandwidth of N – 1 drives is realized. The figure below
illustrates an example of a RAID 3 array comprised of three disks. Disks A, B and C comprise
the striped set with the strips on disk C dedicated to storing the parity for the strips of the
corresponding stripe. For instance, the strip on disk C marked as P(1A,1B) contains the parity
for the strips 1A and 1B. Similarly the strip on disk C marked as P(2A,2B) contains the parity
for the strips 2A and 2B. Advantage: RAID 3 ensures that if one of the disks in the striped
set (other than the parity disk) fails, its contents can be recalculated using the information
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D-Glossary
on the parity disk and the remaining functioning disks. Consequently read operations can
be time-consuming when the array is operating in degraded mode. If the parity disk itself
fails, then the RAID array is not affected in terms of I/O throughput but it no longer has
protection from additional disk failures. Also, a RAID 3 array can improve the throughput of
read operations by allowing reads to be performed concurrently on multiple disks in the set.
Disadvantage: Due to the restriction of having to write to all disks, the amount of actual disk
space consumed is always a multiple of the disks’ block size times the number of disks in the
array. This can lead to wastage of space.
RAID 5 A RAID 5 array is similar to a RAID 4 array in that, it utilizes a striped set of three
or more disks with parity of the strips (or chunks) comprising a stripe being assigned to the
disks in the set in a round robin fashion. The figure below illustrates an example of a RAID
5 array comprised of three disks – disks A, B and C. For instance, the strip on disk C marked
as P(1A,1B) contains the parity for the strips 1A and 1B. Similarly the strip on disk A marked
as P(2B,2C) contains the parity for the strips 2B and 2C. Advantage: RAID 5 ensures that if
one of the disks in the striped set fails, its contents can be extracted using the information on
the remaining functioning disks. It has a distinct advantage over RAID 4 when writing since
(unlike RAID 4 where the parity data is written to a single drive) the parity data is distributed
across all drives. Also, a RAID 5 array can improve the throughput of read operations by
allowing reads to be performed concurrently on multiple disks in the set.
RAID 10 A RAID 10 array is formed using a two-layer hierarchy of RAID types. At the lowest
level of the hierarchy are a set of RAID 1 arrays i.e., mirrored sets. These RAID 1 arrays in
turn are then striped to form a RAID 0 array at the upper level of the hierarchy. The collective
result is a RAID 10 array. The figure below demonstrates a RAID 10 comprised of two RAID
1 arrays at the lower level of the hierarchy – arrays A and B. These two arrays in turn are
striped using 4 stripes (comprised of the strips 1A, 1B, 2A, 2B etc.) to form a RAID 0 at the
upper level of the hierarchy. The result is a RAID 10. Advantage: RAID 10 ensures that if
one of the disks in any parity group fails, its contents can be extracted using the information
on the remaining functioning disks in its parity group. Thus it offers better data redundancy
than the simple RAID types such as RAID 1, 3, and 5. Also, a RAID 10 array can improve the
throughput of read operations by allowing reads to be performed concurrently on multiple
disks in the set.
RAID 50 A RAID 50 array is formed using a two-layer hierarchy of RAID types. At the lowest
level of the hierarchy is a set of RAID 5 arrays. These RAID 5 arrays in turn are then striped to
form a RAID 0 array at the upper level of the hierarchy. The collective result is a RAID 50 array.
The figure below demonstrates a RAID 50 comprised of two RAID 5 arrays at the lower level of
the hierarchy – arrays X and Y. These two arrays in turn are striped using 4 stripes (comprised
of the strips 1X, 1Y, 2X, 2Y, etc.) to form a RAID 0 at the upper level of the hierarchy. The result
is a RAID 50. Advantage: RAID 50 ensures that if one of the disks in any parity group fails, its
contents can be extracted using the information on the remaining functioning disks in its parity
group. Thus it offers better data redundancy than the simple RAID types, i.e., RAID 1, 3, and 5.
Also, a RAID 50 array can improve the throughput of read operations by allowing reads to be
performed concurrently on multiple disks in the set.
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D-Glossary
Read Ahead Motivated by the principle of “spatial locality”, many RAID controllers read
blocks of data from secondary storage ahead of time, i.e., before an application actually
requests those blocks. The number of data blocks that are read ahead of time is typically
governed by some heuristic that observes the pattern of requests. The read-ahead technique
is particularly efficient when the spatial distribution of an application’s requests follows a
sequential pattern.
Read-Modify-Write This is a term used to characterize an efficient methodology using
which parity is calculated and written into a RAID array. However, before we describe this
methodology, let us briefly touch upon the most obvious and brute-force way of determining
and writing parity (in response to a write operation) into a RAID array. Assume that data is
being written into a strip on the RAID array that supports redundancy by the use of parity. Let
us denote this as the target strip. Also assume that there are N strips per stripe including the
parity strip and the target strip. Then to recalculate parity for that stripe, the following steps
may be taken. First the contents of the N – 2 non-parity strips (belonging to the same stripe as
the target strip) have to be read. This is followed by N – 2 XOR operations on the contents of
the N – 2 strips that were just read plus the new contents of the target strip. This is followed
by 1 operation to write the new data into the target strip and 1 operation to update the value
of the parity strip. In all the total number of read, XOR and write operations are N – 2, N – 2,
and 2 respectively adding up to a grand total of 2N – 2. Let us now discuss the “read-modifywrite” method for calculating and writing parity. It is based on simple algebra, and is more
efficient than the method described earlier when the value of N is large. Suppose d1, d2,…
dt,… dN-1 are the data contents of the N – 1 non-parity strips with dt being the contents of
the target strip. Let, p = d1 ^ d2 ^ … dt ^ …^ dN-1 Now suppose that the new data to be
written into the target strip is d’t.We wish to determine the value of p’ = d1 ^ d2 ^ … d’t ^
…^ dN-1. Now, p ^ p’ = (d1 ^ d2 ^ … dt ^ …^ dN-1) ^ (d1 ^ d2 ^ … d’t ^ …^ dN-1) p ^ p’
= dt ^ d’t, since ^ operation is commutative and associative p’ = dt ^ d’t ^ p In other words,
the new parity can be evaluated by calculating the XOR of the old data in the target strip, the
new data for the target strip and the old parity. Clearly this requires only 2 reads – one for the
old data and the old parity – followed by 2 XOR operations with 2 writes – one for writing
the new data into the target strip and the new parity, giving us a grand total of 6 operations.
Why is this better? When the value of N is large, i.e., the size of the parity group is large; the
brute-force method utilizes far more operations!
Read Through Using this methodology, a read operation not only reads data from secondary
storage into system memory but also places the data into the cache such that future need for
the same data can be addressed expeditiously by directing a read operation for that data into
the cache only.
Rebuild When a RAID array enters into a degraded mode, it is advisable to rebuild the array
and return it to its original configuration (in terms of the number and state of working disks)
to ensure against operation in degraded mode
SATA Acronym for “Serial ATA”. A hard disk drive interface standard developed to enhance
connectivity and speed over the IDE, or Parallel ATA disk interface. Current generation SATAII
supports speeds up to 300MB/S.
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D-Glossary
SCSI acronym for “Small Computer System Interface”, SCSI is a set of standards for physically
connecting and transferring data between computers and peripheral devices. The SCSI standards
define commands, protocols, and electrical and optical interfaces. SCSI is most commonly used for
hard disks and tape drives, but it can connect a wide range of other devices, including scanners
and CD drives. Most modern storage protocols are based on the SCSI Block Protocol.
Secondary Storage Mass storage devices such as hard disks, magneto-optical disks, floppy
disks and tapes are frequently referred to as secondary storage.
Stripe A stripe is a logical space that spans across multiple hard disks with each constituent
hard disk contributing equal strips (or chunks) of space to the stripe. In the figure below,
strips 1, 2, and 3 from hard disk 1, 2, and 3 respectively comprise a (purple colored) stripe.
Synonym: major stripe
Stripe Set A stripe set is a set of stripes that spans across multiple hard disks. In the figure
below, the displayed stripe set has 4 stripes, with strip number 1 comprised of the purple
strips 1A, 1B and 1C. Stripe number 2 is comprised of the green strips 2A, 2B and 2C etc.
Stripe Size This is the size of the strips that constitute each stripe. This term is a misnomer
– though prevalent – since it should appropriately be called strip size or chunk size.
TCP/IP This is an acronym for “Transmission Control Protocol/Internet Protocol”. It is
comprised of two parts TCP and IP. The former, i.e., TCP is a peer-to-peer connection oriented
protocol that guarantees the delivery of data packets in the correct sequence between two
peers. The latter, i.e., IP is the protocol that defines and governs addressing, fragmentation,
reassembly and time-to-live parameters for packets.
Volume Set A volume set is a concatenation of storage elements that may be RAID arrays,
JBODs, or simply areas of disks that are not part of RAID arrays.
Write-back Cache a caching scheme that acknowledges the write request as complete before
data is written to the final storage location. This methodology can improve the efficiency
of write operations under favorable circumstances, but is at risk of data incoherencies in a
system that is not protected from power fluctuations or failures.
Write-through Cache When a cache is operating in write-through mode, data written into the
cache is also written to the destination secondary storage devices. Essentially write completion
does not occur until the data is written to secondary storage. Thus the contents of the cache
and the secondary storage are always consistent. The advantage is that the possibility of data
corruption is greatly reduced. The disadvantage is that write-through operations are more time
consuming
XOR Function All RAID arrays (with the exception of RAID 0, RAID 1 and RAID 10) require
parity to be calculated and written to the array in conjunction with data. Typically the parity is
a simple XOR on the bytes comprising a stripe. This is a computationally intensive operation
that many modern RAID controllers perform using a dedicated ASIC often referred to as a
XOR-engine.
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E-Product Specifications
Appendix E: Product Specifications
System Architecture
Intel 80219 400MHz XScale I/O processor
64bit, 133MHz PCI-X Interconnect
128MB on-board DDR200 SDRAM with ECC protection
Marvell SATA ll drive channel controller
NVRAM for RAID configuration & transaction log
Write-through or write-back cache support
Firmware in Flash ROM for easy upgrades
Disk
Bus Interface
5 hot swappable, SATA2-NCQ, 7200 RPM Disk Drives
5 discrete SATA2 drive channels
48-bit LBA support allows disk exceeding 137GB
Staggered Spin-Up of Individual Disk to minimize Power-on Surge
RAID Features
RAID level 0, 1 (0+1), 3, 5 with single disk passthrough
Multiple RAID selection
Array roaming
Online RAID level/ stripe size migration
Online capacity expansion and RAID level migration simultaneously
Automatically and transparently rebuilds hot spare drives
Hot swappable disk drives
Instant availability and background initialization
Automatic drive insertion / removal detection and rebuilding
Field-upgradeable firmware in flash ROM
Firmware-embedded management via Front Panel, RS232 Terminal session, telnet Session, and web browser-based RAID management
Dual Concurrent Host Bus Channels
External SATA channel; Transfer rate up to 150MB/sec
FireWire 800 and USB 2.0 host channels
Monitors / Indicators
LCD Display and Control Panel for setup, alarm mute and configuration
5 drive LED indicators and 3 environment LED indicators
Environment and drive failure indication through LCD, LED and alarm buzzer
PlatinumRAID Dimensions:
Width: 8.3”
Depth: 12”
Height: 9.5”
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69
E-Product Specifications
Weight:
22 lbs with drives.
Power Consumption:
Normal operation: 2.3 AC Amps @ 115 Volts
Spin up (peak): 3.70 AC Amps @ 115 Volts
Power Requirements:
Internal Auto-sensing power supply (90-240vac) (47-62Hz)
Environmental Specifications:
Temperature 5ºC - 55ºC (41ºF - 131ºF)
Humidity 10% - 90% RH (Non-condensing)
PlatinumRAID Pro Owner’s Manual
70
MicroNet Techology
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Torrance, CA 90501
www.MicroNet.com
5-1-2008 Rev 3 (PRPROM3)
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