DELL MD3220 사용자 설명서

Configuration: Premium Feature—Virtual Disk Copy

Operation in Progress icons appear on the source virtual disk and the target 

virtual disk while the virtual disk copy has a status of In Progress or Pending.

A virtual disk copy can fail due to these conditions:

• A read error from the source virtual disk
• A write error to the target virtual disk
• A failure in the storage array that affects the source virtual disk or the 

target virtual disk.

When the virtual disk copy fails, a critical event is logged in the Event Log, 

and a Needs Attention icon appears in the Array Management Window. 

While a virtual disk copy has this status, the host has read-only access to the 

source virtual disk. Read requests from and write requests to the target virtual 

disk do not take place until the failure is corrected by using the Recovery 

Guru.

During a virtual disk copy, the same RAID controller module must own both 

the source virtual disk and the target virtual disk. If both virtual disks do not 

have the same preferred RAID controller module when the virtual disk copy 

starts, the ownership of the target virtual disk is automatically transferred to 

the preferred RAID controller module of the source virtual disk. When the 

virtual disk copy is completed or is stopped, ownership of the target virtual 

disk is restored to its preferred RAID controller module. If ownership of the 

source virtual disk is changed during the virtual disk copy, ownership of the 

target virtual disk is also changed.

You must manually change RAID controller module ownership to the 

alternate RAID controller module to allow the virtual disk copy to complete 

under all of these conditions:

• A virtual disk copy has a status of In Progress
• The preferred RAID controller module of the source virtual disk fails
• The ownership transfer does not occur automatically in the failover

book.book  Page 158  Monday, June 21, 2010  11:00 AM