IBM Storwize V7000 Unified Problem Determination Manual page 326

4. Click Finish.
Using spare drives to add capacity to the storage pool
If drives are not available, you need to make spare drives available to add capacity
to the storage pool, bring the file system back online, ensure capacity for the
storage pool does not run out again, and return spare drives to the system. To use
spare drives to add capacity to the storage pool and bring file systems back online,
complete these steps:
1. Mark a spare drive as a candidate drive: When block storage is configured on
2. Expand the storage pool: After the spare drive has been marked as a candidate
3. Check event logs to ensure all underlying volumes are back online. Before
4. Bring file systems back online: After the capacity has been added to the
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the system, available drives are categorized based on their drive class and drive
type. To provide for drive redundancy, some drives are mark as spares, which
provide backup drives in the event of a drive failure. Other drives are marked
as candidates, which means they can be used as capacity for block storage
pools. To mark a spare drive as a candidate and make it available to the block
storage pool, complete these steps:
a. In the management GUI, select Pools > Internal Storage.
b. From the list of drives that display, right-click a drive that is marked as a
spare drive and select Mark as... > Candidate.
Note: The Use column displays how a specific drive is used on the system.
c. Click OK.
drive, you can expand the capacity of the block storage pool that is used for
the offline file system.
a. In the management GUI, select Pools > Internal Storage.
b. Select Configure Storage.
c. On the Configure Internal Storage dialog, select Select a different
configuration and complete the following steps:
1) In the Drive Class field, select the drive class of the candidate drive
(former spare) that is available based on the installed storage on the
system. Verify the correct number of disks is displayed.
2) In the Preset field, select the RAID configuration for the storage you are
configuring. If you are adding only one disk, the only RAID option is
RAID0 which does not provide any data protection.
3) Select Optimize for capacity to configure all available capacity.
4) Verify the configuration and click Next.
5) Click Expand an existing pool and select the storage pool that is used
for compression.
bringing the file system back online ensure that all the errors for both the block
volumes and the file system have been resolved by completing these steps:
a. In the management GUI, select Monitoring > Events and select Block.
b. Run the fix procedures in the recommended order for all events that are
related to the block volume that is used by the file system.
c. Select File and fix all errors that are related to the offline file systems.
storage pool, bring the file system back online by completing these steps:
a. In the management GUI, select Files > File Systems.
b. Right-click the compressed file system that is offline and select Mount. If
the file system does not come back online you may need to restart all of the