Storage Array Performance During Virtual Disk Copy; Setting Copy Priority - Dell PowerVault MD3200i Owner's Manual

5 In the Select source virtual disk are, select the appropriate virtual disk and
click Next.
The Select Target Virtual Disk and Copy Priority window is displayed.
6 In the Select target virtual disk area, select the appropriate virtual disk
7 In the Select copy priority area, select the relevant copy priority and click
Next.
The Preview window displays the summary of your selections.
8 Type yes, and click Finish.
NOTE:
Operation in Progress icons appear on the source virtual disk and the target
virtual disk while the virtual disk copy has a status of In Progress or Pending.
For more information, see the PowerVault Modular Disk Storage Manager
online help topics.
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:
170
Configuration: Premium Feature—Virtual Disk Copy