Silicon Graphics InfiniteStorage 4000 Series, Настройка и обслуживание

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178 SSD Cache Management Tasks
You can increase the capacity of an existing SSD cache by using this command to add
solid SSDs:
set ssdCache [ ssdCacheName ]

addDrives=( trayID1,drawerID1,slotID1 ...
trayIDn,drawerIDn,slotIDn )
You can add one or more SSDs by specifying the location of the drives that you want
to add. For high-capacity drive trays, specify the tray ID value, the drawer ID value,
and the slot ID value for each SSD that you want to add. For low-capacity drive trays,
specify the tray ID value and the slot ID value for each SSD that you want to add.
Tray ID values are
0
to
99
. Drawer ID values are
1
to
5
. Slot ID values are
1
to
32
.
Enclose the tray ID values, the drawer ID values, and the slot ID values in
parentheses.
If you want to remove drives, you can use this command:
set ssdCache [ ssdCacheName ]

removeDrives=( trayID1,drawerID1,slotID1 ...
trayIDn,drawerIDn,slotIDn )
You cannot remove all of the SSDs from the SSD cache using this command; at least
one SSD must remain in the SSD cache. If you want to completely remove the SSD
cache, use this command:
delete ssdCache [ ssdCacheName ]
When you run this command, all data in the SSD cache is purged.
Locating Drives in the SSD Cache
The drives that comprise the SSD cache might be dispersed throughout the storage
array. For maintenance or other reasons, you might be required to find the drives in
the SSD cache. You can locate the drives in the SSD cache using this command:
start ssdCache [ ssdCacheName ] locate
This command identifies the drives that are logically grouped together to form the
SSD cache by blinking the indicator lights on the drives in the SSD cache. To turn off
the indicator lights on the drives, use this command:
stop ssdCache locate
Suspending and Resuming SSD Cache Operation
At times you will need to perform maintenance on the drives in the SSD cache. Such
maintenance might include replacing non-optimal drives or upgrading drives. To
perform maintenance on the SSD cache, you will need to first suspend the operations
of the cache. To suspend operations use this command:
suspend ssdCache [ ssdCacheName ]