Using the Snapshot Feature 75When you stop the copy-on-write operations for a specific snapshot virtualdisk, only that snapshot virtual disk is disabled. All other snapshot virtualdisks remain in operation.Re-creating the Snapshot Virtual DiskTo restart a copy-on-write operation, use the recreate snapshot virtualDiskcommand. This command starts a fresh copy-on-write operation using anexisting snapshot virtual disk. When you restart a snapshot virtual disk, thesnapshot virtual disk must have either an Optimal or a Disabled state.The following conditions then occur:• All copy-on-write data previously on the snapshot repository virtual disk isdeleted.• Snapshot virtual disk and snapshot repository virtual disk parametersremain the same as the previously disabled snapshot virtual disk andsnapshot repository virtual disk. You can also change the userLabel,warningThresholdPercent, and repositoryFullPolicy parameters when you restartthe snapshot virtual disk.• The original names for the snapshot repository virtual disk are retained.Preparing Host Servers to Re-create a Snapshot Virtual DiskCAUTION: Before you create a new point-in-time image of a source virtual disk,stop any data access (I/O) activity or suspend data transfer to the source virtualdisk and snapshot virtual disk to ensure that you capture an accurate point-in-timeimage of the source virtual disk. Close all applications, including WindowsInternet Explorer, to make sure all I/O activity has stopped.NOTE: Removing the drive letter of the associated virtual disk in Windows orunmounting the virtual drive in Linux helps to guarantee a stable copy of the drivefor the Snapshot.Before re-creating a snapshot virtual disk, both the server and the associatedvirtual disk you are re-creating have to be in the proper state. To ensure thatthe host server is properly prepared to re-create a snapshot virtual disk, youcan either use an application to carry out this task, or you can perform thefollowing steps:1 Stop all I/O activity to the source and snapshot virtual disk (if mounted).2 Using your Windows system, flush the cache to both the source and thesnapshot virtual disk (if mounted). At the host prompt, type
