1 |
Select the storage subsystem from the Subsystem Management Window, then, select either the Storage Subsystem >> Change >> Cache Settings pull-down menu option, or Change >> Cache Settings from the right-mouse pop-up menu. Result: The Cache Settings dialog is displayed. |
2 |
Select the percentage of unwritten data in the cache that will trigger a cache flush in the Start flushing spinner box. Note: A percentage that is too low increases the chance that data needed for a host read will not be in the cache. It also increases the number of disk writes necessary to maintain the cache level, increasing system overhead and decreasing performance. |
3 |
Select the percentage of unwritten data in the cache that will stop a cache flush in progress in the Stop flushing spinner box. Note: The lower the specified percentage, the higher the chance that data for a host read would require a disk read rather than be present in the cache. |
4 |
Select a cache block size that is appropriate for your applications from the Cache block size drop-down list. Available choices include:
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5 |
Select OK. Result: The storage subsystem controller cache settings are updated. |
Changing Logical Drive Properties