Managing storage pools – HP Storage Essentials Enterprise Edition Software User Manual
Page 580
Provisioning Manager
542
1.
Click the Edit (
) button for the volume you want to modify.
2.
Enter the cache read ahead multiplier (0 to 65535 bytes) in the Cache read-ahead multiplier
box. A cache read ahead multiplier copies additional data blocks into the cache while it is
reading and copying host-requested data blocks from disk to cache. To disable this option, enter
0.
3.
Optional: Select Read Caching.
Use this option to store the host's operations in controller cache memory.
4.
Optional: Select Write Caching.
Use this option to write data to the cache memory of a controller
5.
Optional: Select Write Caching with Mirroring.
Use this option to preserve data if a controller or the cache fails. When this option is enabled,
the data is written to two redundant controllers of the same cache size. This configuration
provides redundancy in case a controller fails. One controller performs uncompleted write
operations when the other controller fails.
NOTE:
For information about changing the owner assigned to the volume, see ”
Owner of a Volume (LSI, CLARiiON and Sun 6130)
Changing the Owner of a Volume (LSI, CLARiiON and Sun 6130)
When a volume is created, the management server automatically assigns a controller to be the
owner of the volume. You can change the owning controller if you want to use a different controller
for LUN masking.
NOTE:
If the owner becomes unreachable as a result of a network failure or the owner itself fails,
the other controller in the pair automatically becomes the owner of the volume.
To change the owner:
1.
Click the Edit (
) button for the volume you want to modify.
2.
Select the owner for the volume from the Current Owner menu.
3.
Click OK.
Managing Storage Pools
This section contains the following topics:
• Creating a Storage Pool (LSI, CLARiiON, Sun 6130 and Sun 35xx)
• Accessing Information About Storage Pools