170 Configuration: Premium Feature—Virtual Disk Copy5 In the Select source virtual disk are, select the appropriate virtual disk andclick Next.The Select Target Virtual Disk and Copy Priority window is displayed.6 In the Select target virtual disk area, select the appropriate virtual disk7 In the Select copy priority area, select the relevant copy priority and clickNext.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 targetvirtual disk while the virtual disk copy has a status of In Progress or Pending.For more information, see the PowerVault Modular Disk Storage Manageronline help topics.Storage Array Performance During Virtual DiskCopyThe following factors contribute to the overall performance of the storagearray:• 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 copythan standard virtual disksDuring a virtual disk copy, resources for the storage array are diverted fromprocessing I/O activity to completing a virtual disk copy. This affects theoverall performance of the storage array. When you create a new virtual diskcopy, you define the copy priority to determine how much controllerprocessing time is diverted from I/O activity to a virtual disk copy operation.Setting Copy PriorityYou can use the Copy Manager to select the rate at which a virtual disk copycompletes for a selected copy pair. You can change the copy priority for a copypair at any of these times:
