Configuration: Premium Feature—Virtual Disk Copy 177• To enable Read-Only permission, select Change Target Virtual DiskPermissions Enable Read-Only.NOTE: Write requests to the target virtual disk are rejected when the Read-Only permission is enabled on the target virtual disk.• To disable Read-Only permission, select Change Target VirtualDisk Permissions Disable Read-Only.Virtual Disk Copy RestrictionsBefore you perform any virtual disk copy tasks, understand and adhere to therestrictions listed in this section. The restrictions apply to the source virtualdisk, the target virtual disk, and the storage array.• While a virtual disk copy has a status of In Progress, Pending, or Failed, thesource virtual disk is available for read I/O activity only. After the virtualdisk copy is complete, read and write I/O activity to the source virtual diskare permitted.• A virtual disk can be selected as a target virtual disk for only one virtualdisk copy at a time.• A virtual disk copy for any virtual disk cannot be mounted on the samehost as the source virtual disk.• Windows does not allow a drive letter to be assigned to a virtual disk copy.• A virtual disk with a Failed status cannot be used as a source virtual disk ortarget virtual disk.• A virtual disk with a Degraded status cannot be used as a target virtualdisk.• A virtual disk participating in a modification operation cannot be selectedas a source virtual disk or target virtual disk. Modification operationsinclude the following:– Capacity expansion – RAID-level migration – Segment sizing– Virtual disk expansion– Defragmenting a virtual diskNOTE: The following host preparation sections also apply when using the virtualdisk copy feature through the CLI interface.
