Dell PowerVault MD3220i Owner's Manual - Page 152
prompt, type, press <Enter>. For more information, see SMrepassist Utility
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• You must satisfy the requirements of your host operating system for creating snapshot virtual disks. Failure to meet the requirements of your host operating system results in an inaccurate snapshot of the source virtual disk or the target virtual disk in a virtual disk copy. NOTE: Before you create a new snapshot of a source virtual disk, stop any data access (I/O) activity or suspend data transfer to the source virtual disk to ensure that you capture an accurate snapshot of the source virtual disk. Close all applications, including Windows Internet Explorer®, to make sure all I/O activity has stopped. NOTE: Removing the drive letter of the associated virtual disk(s) in Windows or unmounting the virtual drive in Linux helps to guarantee a stable copy of the drive for the Snapshot. Before creating a snapshot virtual disk, the host server must be in the proper state. To prepare your host server: 1 Stop all I/O activity to the source. 2 Using your Windows system, flush the cache to the source. At the host prompt, type SMrepassist -f and press . For more information, see "SMrepassist Utility" on page 243. 3 Remove the drive letter(s) of the source in Windows or unmount the virtual drive(s) in Linux to help guarantee a stable copy of the drive for the Snapshot. If this is not done, the snapshot operation reports that it has completed successfully, but the snapshot data is not updated properly. NOTE: Verify that the virtual disk has a status of Optimal or Disabled by clicking the Summary tab and then clicking Disk Groups & Virtual Disks. 4 Follow any additional instructions for your operating system. Failure to follow these additional instructions can create unusable snapshot virtual disks. NOTE: If your operating system requires additional instructions, you can find those instructions in your operating system documentation. After your host server has been prepared, see "Creating a Snapshot Virtual Disk Using the Advanced Path" on page 149 to create the snapshot using the advanced path. 152 Configuration: Premium Feature-Snapshot Virtual Disks