176 Configuration: Premium Feature—Virtual Disk CopyCreating a Virtual Disk Copy for an MSCS SharedDiskTo create a virtual disk copy for a Microsoft Cluster Server (MSCS) shareddisk, create a snapshot of the virtual disk, and then use the snapshot virtualdisk as the source for the virtual disk copy.NOTE: An attempt to directly create a virtual disk copy for an MSCS shared disk,rather than using a snapshot virtual disk, fails with the following error: Theoperation cannot complete because the selected virtual disk is not a source virtualdisk candidate.NOTE: When creating a snapshot virtual disk, map the snapshot virtual disk to onlyone node in the cluster. Mapping the snapshot virtual disk to the host group or bothnodes in the cluster may cause data corruption by allowing both nodes toconcurrently access data.Virtual Disk Read/Write PermissionsAfter the virtual disk copy is complete, the target virtual disk automaticallybecomes read-only to the hosts. The target virtual disk rejects read and writerequests while the virtual disk copy operation has a status of Pending or InProgress or if the operation fails before completing the copy. Keep the targetvirtual disk Read-Only enabled if you want to preserve the data on the targetvirtual disk for reasons such as the following:• If you are using the target virtual disk for backup purposes.• If you are using the data on the target virtual disk to copy back to thesource virtual disk of a disabled or failed snapshot virtual disk.If you decide not to preserve the data on the target virtual disk after thevirtual disk copy is complete, change the write protection setting for thetarget virtual disk to Read/Write.To set the target virtual disk read/write permissions:1 In the AMW, select Virtual Disk Copy Manager.The Copy Manager window is displayed.2 Select one or more copy pairs in the table.3 Perform one of these actions:
