Administrator Guide

unallocated storage for the pool with the same information as the capacity top bar graph, but for the pool instead of the system.
The bottom horizontal bar represents the size of the pool.
The disk group utilization graph consists of a graph with vertical measurements. The size of each disk group in the virtual
pool is proportionally represented by a horizontal section of the graph. Vertical shading for each disk group section represents
the relative space allocated in that disk group. A tool tip for each section shows the disk group name, size, and amount of
unallocated space. The color for each disk group represents the tier to which it belongs.
The cache utilization graph also consists of a graph with vertical measurements. However, since read cache does not cache pool
capacity, it is represented independently.
For linear storage, the pool capacity graph consists of a single horizontal bar that shows the overall storage for the pool(s)
owned by the controller. Unlike with virtual storage, there is no bottom horizontal bar. The disk group utilization graph is similar
to that shown for virtual storage. The size of each linear disk group in the storage block is proportionally represented by a
horizontal section of the graph. Vertical shading for each disk group section represents the relative space allocated in that disk
group. A tool tip for each section shows the disk group name, size, and amount of unallocated space. The sections are all the
same color since linear disk groups are not tiered.
The number of volumes and virtual snapshots for the pool owned by the controller appears above the top horizontal bar for both
virtual and linear storage.
Hover the cursor anywhere in a storage block to display the Storage Information panel. The Storage Information panel only
contains information for the type of storage that you are using.
Table 6. Storage information
Storage type Information displayed for the storage type
Virtual pool
● Owner, storage type, total size, allocated size, snapshot size, available size,
allocation rate, and deallocation rate
● For each tier: Pool percentage, number of disks, total size, allocated size,
unallocated size, number of reclaimed pages, and health
● If the pool health is not OK, an explanation and recommendations for resolving
problems with unhealthy components is available. If the overall storage health is
not OK, the health reason, recommended action, and unhealthy subcomponents are
shown to help you resolve problems.
Linear pool
● Owner, storage type, total size, allocated size, and available size
● If the pool health is not OK, an explanation and recommendations for resolving
problems with unhealthy components is available. If the overall storage health is
not OK, the health reason, recommended action, and unhealthy subcomponents are
shown to help you resolve problems.
System health information
The health icon between the storage blocks indicates the health of the system. Hover the cursor over this icon to display the
System Health panel, which shows more information about the health state. If the system health is not OK, the System Health
panel also shows information about resolving problems with unhealthy components.
Spares information
The Spares block between the storage blocks and below the event icon shows the number of disks that are designated as global
spares to automatically replace a failed disk in the system. Hover the cursor over the Spares block to see the disk types of the
available global spares in the Global Spares Information panel.
Resolving a pool conflict caused by inserting a foreign disk group
If you insert a virtual disk group from an old system into a new system, the new system attempts to create a virtual pool for that
disk group. If that system already has a virtual pool with the same name, the pool for the inserted disk group will be offline. For
example, if the new system has a pool A and you insert a disk group that came from pool A on the old system, the imported pool
A from old system will be offline.
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