Configuration: About Your Storage Array 75
Displaying Failover Alert You can change the failover alert delay for a storage array. The failover alert
delay lets you delay the logging of a critical event if the multi-path driver
transfers virtual disks to the non-preferred controller. If the multi-path driver
transfers the virtual disks back to the preferred controller within the specified
delay period, a critical event is not logged. If the transfer exceeds this delay
period, then a virtual disk-not-on-preferred-path alert is issued as a critical
event. You can also use this option to minimize multiple alerts when more
than one virtual disk fails over because of a system error, such as a failed host
adapter.
For more information, see the PowerVault Modular Disk Storage Manager
online help topics.
Changing the Cache Settings on the Storage ArrayTo change the storage array cache settings:
1
In the AMW, select
Storage Array
Change
Cache Settings
.
The
Change Cache Settings
window is displayed.
2
Select or enter the percentage of unwritten data in the cache to trigger a
cache flush in
Start flushing
.
3
Select or enter the percentage of unwritten data in the cache to stop a
cache flush in progress in
Stop flushing
.
4
Select the appropriate
Cache block size
.
A smaller cache size is a good choice for file-system use or database-
application use. A larger cache size is a good choice for applications that
generate sequential I/O, such as multimedia.
5
In the
Enter Password
dialog, type the current password for the storage
array, and click
OK
.
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