Administrator Guide

Working in the Pools topic
Topics:
• Viewing pools
• Adding a disk group
• Modifying a disk group
• Removing disk groups
• Expanding a disk group
• Managing spares
• Create a volume
• Changing pool settings
• Verifying and scrubbing disk groups
• Removing a disk group from quarantine
Viewing pools
The Pools topic shows a tabular view of information about the pools and disk groups that are defined in the system, as well as information
for the disks that each disk group contains. Corresponding to the two storage methods, there are both virtual and linear pools and disk
groups. There is another type of disk group, the read-cache disk group, which is also related to virtual storage. Read-cache disk groups
consist of SSDs. If your system does not use SSDs, you will not be able to create read-cache disk groups.
For more information about pools, see About pools on page 20. For more information about disk groups, see About disk groups on page 14.
Pools table
The pools table shows the following information. The system is limited to two virtual pools, which are named A and B. When you create a
linear disk group, the system automatically creates a linear pool with the same name that you designated for the disk group. The system
supports up to 64 linear pools and disk groups.
• Name – Shows the name of the pool.
• Health – Shows the health of the pool: OK, Degraded, Fault, N/A, or Unknown.
• Size – Shows the storage capacity defined for the pool when it was created.
• Class – Shows the storage type for the pool: virtual or linear.
• Avail – Shows the storage capacity presently available for the pool.
• Volumes – Shows the number of volumes defined for the disk groups of the pool.
• Disk Groups – Shows the number of disk groups in the pool.
To see more information about a pool, hover the cursor over the pool in the table. The Pool Information panel that appears contains the
following information:
Table 11. Pool Information panel
Panel Information displayed
Pool Information
Virtual: Name, serial number, size, available, overcommit, pool overcommitted, low threshold, mid threshold,
high threshold, allocated pages, snapshot pages, available pages, sector format, health
Linear: Name, serial number, size, available, owner, sector format, health
For more information about and to manage the above overcommit, low threshold, mid threshold, and high threshold settings, see
Changing pool settings.
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Working in the Pools topic 77