DELL MD3220 사용자 설명서

Configuration: Premium Feature—Snapshot Virtual Disks

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 and 

snapshot 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.

Removing the drive letter of the associated virtual disk in Windows or 

unmounting the virtual drive in Linux helps to guarantee a stable copy of the drive 

for the Snapshot.

Before re-creating a snapshot virtual disk, both the host server and the 

associated virtual disk you are re-creating have to be in the proper state. 
To prepare your host server and virtual disk:

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 the 

snapshot virtual disk (if mounted). At the host prompt, type 
SMrepassist -f <filename-identifier> 
and press <Enter>. For more information, see "SMrepassist Utility" on 

3 Click the Summary tab, then click Disk Groups & Virtual Disks to ensure 

that the snapshot virtual disk is in 

Optimal or Disabled status. 

4 Remove the drive letter(s) of the source and (if mounted) snapshot virtual 

disk 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. 

5 Follow any additional instructions for your operating system. Failure to 

follow these additional instructions can create unusable snapshot virtual 

disks. 

If your operating system requires additional instructions, you can find those 

instructions in your operating system documentation.

book.book  Page 151  Monday, June 21, 2010  11:00 AM