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Configuration: Premium Feature—Virtual Disk Copy 177
Storage Array Performance During Virtual Disk
Copy
The following factors contribute to the overall performance of the storage
array:
• I/O activity
• Virtual disk RAID level
• Virtual disk configuration—Number of drives in the virtual disk groups
• Virtual disk type—Snapshot virtual disks might take more time to copy
than standard virtual disks
During a virtual disk copy, resources for the storage array are diverted from
processing I/O activity to completing a virtual disk copy. This affects the
overall performance of the storage array. When you create a new virtual disk
copy, you define the copy priority to determine how much controller
processing time is diverted from I/O activity to a virtual disk copy operation.
Setting Copy Priority
You can use the Copy Manager to select the rate at which a virtual disk copy
completes for a selected copy pair. You can change the copy priority for a copy
pair at any of these times:
• Before the virtual disk copy begins
• While the virtual disk copy has a status of In Progress
• When you re-create a virtual disk copy
To set copy priority:
1
In the AMW, select
Virtual Disk
Copy
Copy Manager
.
The
Copy Manager
window is displayed.
2
In the table, select one or more copy pairs.
book.book Page 177 Thursday, December 9, 2010 3:20 PM