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Here is Your Customized Document
Here is Your Customized Document
Your Configuration is:
Manage LUNs
Model - VNX5300
Storage Type - VNX for Block (SAN)
Connection Type - Fibre Channel Switch or Boot from SAN
Operating System - ESX Server 5i
Path Management Software - VMware native
Document ID - 1403098848145
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Refer to Document ID:
1403098848145
Content Creation Date June 18, 2014
EMC® VNX® Series
Managing Storage Pools on your VNX® System
November, 2013
This guide describes how to manage block storage pools within Unisphere™ for EMC® VNX®
platforms.
Topics include:
u
u
u
u
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Create a pool or RAID group .......................................................................................2
Create a pool .............................................................................................................2
Create a RAID group .................................................................................................. 4
Expand a pool............................................................................................................ 5
Delete RAID groups.................................................................................................... 5
Create a pool or RAID group
Lets you create a storage pool with disks and default property values that the software
selects, or with disks and property values that you select. A storage pool is a general term
used for RAID groups and pools.
Procedure
1. Select a storage system.
2. Select one of the following:
l
Storage > Common Storage Tasks > Create Storage Pool, or
l
Storage > Storage Configuration > Storage Pools. In the Pools tab, click Create.
3. Do one of the following:
Option
Description
Create a
pool on
page 2
A pool is a set of disks (maximum depends on the storage system
type), all with the same redundancy (RAID 5, RAID 6, and RAID 1/0),
on which you create one or more thin LUNs or non-thin LUNs. For more
efficient performance, all disks in the pool should have the same
capacity. Also, a RAID 6 pool can have 8 disks or 16 disks and a RAID
5 pool can have 5 disksor 9 disks. RAID 5 is the default RAID type for a
pool. A pool name can consist of 1 through 64 characters and a pool
description can be 255 characters long.
Create a
RAID
group on
page 4
A RAID group is a set of disks, all with the same capacity and
redundancy, on which you create one or more LUNs. A RAID 6 group
usually has 6 or 12 disks, but can have 4, 8, 10, 14, or 16 disks. A
RAID 5 group must include at least three disks. A RAID 3 group must
include five or nine disks. A RAID 1/0 group must include at least two
disks. The storage-system type determines the number of RAID groups
that it supports.
Create a pool
Before you begin
You can create pools that use multiple RAID types, one RAID type per tier, to satisfy
multiple tiering requirements within a pool. To do this:
u
The pool must contain multiple disk types.
u
When you first create the pool, select the RAID type for each tier.
u
When you expand an existing pool by adding additional drives, the system selects
the same RAID type that was used when you created the pool.
u
When you expand an existing pool by adding a new disk type tier, you need to select
the RAID type that is valid for the new disk type. For example, best practices suggest
using RAID 6 for NL-SAS drives, and RAID 6, 5, or 1/0 for other drives.
Lets you create a pool-type storage pool with disks and default property values that the
software selects, or with disks and property values that you select.
2
Managing Storage Pools on your VNX® System
Note
When you create a pool-type storage pool, and the FAST VP enabler is installed, the autotiering status for that pool is automatically set to Scheduled. By default, the pool uses
the default auto-tiering schedule until a new schedule is created. At any time, you can
change the auto-tiering status from Scheduled to Manual. This action removes the pool
from any auto-tiering schedule. To relocate the pool data, you must then use the Start
Data Relocation option.
Procedure
1. In the systems drop-down list on the menu bar, select the storage system.
2. Select Storage > Storage Configuration > Storage Pools.
3. In Pools, click Create.
4. In the General tab, under Storage Pool Parameters, select Pool.
The software assigns an ID to the storage pool. The default value is the smallest
available ID for the currently selected storage system. You cannot edit the value.
5. To prevent the pool from participating in the auto-tiering schedule, clear the
Scheduled Auto-Tiering check box. The auto-tiering state for the pool is set to Manual.
6. In Storage Pool Name, assign a name to the pool. You can change the default name
that displays. This name must be unique across all pools.
7. For each disk type available in the pool, a default RAID configuration and number of
disks appears. If a disk type is not available for the pool, it does not display. If you
have multiple disk types available for use in the pool, set the value to 0 if you do not
want to include a specific disk type in the pool.
The software automatically populates the number of disks with the recommended
value for the selected RAID configuration. Alternatively, you can select a different
number of disks up to the maximum number of disks supported for pools for the
storage-system type.
8. If you want to manually choose the disks, under Disks, select Manual.
a. Click Select.
b. In Disk Selection, if the disks you want in the storage pool are in just one
enclosure, then click that enclosure in Select From.
c. For each disk under Selected Disks that you do not want in the storage pool, select
the disk and then click the left arrow.
The disk moves from Selected Disks to Available Disks. The value in the Unused
Disks for Hot Spares column in Disk Summary changes based on your disk
selections.
d. For each disk under Available Disks that you want in the storage pool, select the
disk and then click the right arrow.
The disk moves from Available Disks to Selected Disks. The value in the Unused
Disks for Hot Spares column in Disk Summary changes based on your disk
selections.
e. When Selected Disks includes all the disks you want, click OK.
9. Optionally, assign advanced properties for the pool. Click the Advanced tab:
a. Add a text description for the pool.
b. Specify the consumed capacity (% full threshold) of the pool that will trigger an
alert.
Create a pool
3
10.Click Apply to create the pool. You can now create additional pools, or click Cancel to
close the dialog box.
An icon for the new pool is visible in Storage > Pools/RAID Groups > Pools. Once the
pool is in the Initializing state, you can create LUNs within the pool.
Create a RAID group
Lets you create a RAID group with disks and default property values that the software
selects, or with disks and property values that you select.
Procedure
1. In the systems drop-down list on the menu bar, select the storage system.
2. Select Storage > Storage Configuration > Storage Pools.
3. In Pools, click Create.
4. In the General tab, under Storage Pool Parameters:
a. Select RAID Group.
b. Assign an ID to the RAID group.
The default value is the smallest available ID for the currently selected storage
system. You can change the default ID.
The software assigns a name (RAID group X) that you cannot edit.
c. Assign a RAID type.
All RAID types supported for the storage system are visible. There must be enough
disks to support each RAID type. RAID 5 is the default RAID type.
When you select a RAID type, the software automatically populates the Number of
Disks option with the recommendation for the selected RAID type. Alternatively,
you can select a different number of disks.
5. If you want to automatically assign the disks, under Disks, keep the default of
Automatic selected.
Otherwise, if you want to manually choose the disks, select Manual.
a. Click Select.
b. On Disk Selection, if the disks you want in the storage pool are in just one
enclosure, then select that enclosure in Select From.
c. For each disk under Selected Disks that you do not want in the storage pool, select
the disk and click the left arrow.
The disk moves from Selected Disks to Available Disks. The value in the Unused
Disks for Hot Spares column in Disk Summary changes based on your disk
selections.
d. For each disk under Available Disks that you want in the storage pool, select the
disk and click the right arrow.
The disk moves from Available Disks to Selected Disks. The value in the Unused
Disks for Hot Spares column in Disk Summary changes based on your disk
selections.
e. When Selected Disks includes all the disks you want, click OK.
6. Optionally, assign advanced properties for the RAID group. Click the Advanced tab:
4
Managing Storage Pools on your VNX® System
a. Determine whether you want to enable power settings for the RAID group.
b. Determine whether you want the stripe element size to be 128K or 1024K (High
Bandwidth Reads). Some read intensive applications may benefit from a larger
stripe element size. The high bandwidth stripe element size is available for RAID 5
RAID groups that contain 5 disks (4+1). The High Bandwidth Reads option is not
supported on Flash drives.
7. Click Apply to create the RAID group storage pool. You can now create additional RAID
group storage pools, or click Cancel to close the dialog box.
You can now create LUNs within the RAID group.
Expand a pool
Expands the physical user capacity of a storage pool by adding disks to the pool. The
maximum number of disks allowed in a storage pool is based on storage-system type and
the new disks should be the same type as what is currently in the storage pool.
Procedure
1. Select a storage system.
2. Select Storage > Storage Configuration > Storage Pools > Pools.
3. Do one of the following:
l
Right-click on the pool and select Expand.
l
Select the pool and then click Expand.
By default, the Automatic option for disk selection is enabled. For each disk type that
is available in the pool, a default RAID configuration and number of disks to add
appears. If a disk type is not available for the pool, it does not display. Change the
RAID configuration or number of disks if necessary.
If you select Manual and then click Select, you can manually select the disks you want
to add to the storage pool.
4. After you add all the disks that you want to the storage pool, click OK to begin the
expand operation. The software validates the disk configuration and if valid,
successfully completes the operation. If the software discovers problems with the
configuration, it returns an appropriate error or warning message.
Delete RAID groups
Delete a RAID group only if you want to use the disks in a different RAID group, or
exchange the disks for disks with a different capacity. Before you can delete a RAID
group, you must delete all the LUNs on the RAID group. Deleting a LUN destroys all the
data on the LUN.
To delete a RAID group, complete the following tasks:
Procedure
1. Verify that the RAID group contains the disks you want.
a. Select a storage system.
b. Select Storage > Storage Configuration > Storage Pools > RAID Groups.
c. Double-click the RAID group that you want to delete.
d. On the RAID Group Properties window, select the Disks tab, and then make sure
that the disks you want are listed in that RAID group.
Expand a pool
5
e. If the RAID group contains the disks you want, unbind all the LUNs in the RAID
group.
2. Delete all LUNs in a RAID group.
a. In the Details pane, click the LUNs tab.
b. Right-click the icon for a LUN in the RAID group, and then click Delete.
c. Click Yes.
d. When all LUNs in the RAID group are deleted, you can delete the RAID group.
3. Delete the RAID group.
a. Right-click the icon for the RAID group you want to delete, and then click Delete.
b. Click OK.
6
Managing Storage Pools on your VNX® System
Copyright © 2006-2013 EMC Corporation. All rights reserved. Published in USA.
Published November, 2013
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Delete RAID groups
7
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