Dell PowerVault MD3000 - Manual (Page 83)

Using the Virtual Disk Copy Feature
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The following example shows a command that returns information about a
virtual disk used for a virtual disk copy:
client>smcli 123.45.67.89 -c "show virtualDiskCopy
source [\"Jaba_Hut\"];"
The command in the preceding example requests information about the
source virtual disk Jaba_Hut. If you want information about all virtual disks,
use the allVirtualDisks parameter. You can also request information about a
specific target virtual disk.
The following example is the script file version of the command:
show virtualDiskCopy source ["Jaba_Hut"];
Changing Virtual Disk Copy Settings
The set virtualDiskCopy command enables you to change the property
settings for a virtual disk copy pair. Using this command, you can change the
following items:
• Copy priority
• Read/write permission for the target virtual disk
Copy priority has five relative settings, which range from highest to lowest.
The highest priority supports the virtual disk copy, but I/O activity might be
affected. The lowest priority supports I/O activity, but the virtual disk copy
takes longer. You can change the copy priority at three different times in the
operation:
• Before the virtual disk copy begins
• While the virtual disk copy has a status of In Progress
• After the virtual disk copy has completed re-creating a virtual disk copy
using the recopy virtualDiskCopy command
When you create a virtual disk copy pair and after the original virtual disk
copy has completed, the target virtual disk is automatically defined as read-
only to the hosts. The read-only status of the target virtual disk ensures that
the copied data on the target virtual disk is not corrupted by additional writes