Dell PowerVault MD3000 - Manual (Page 82)

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Using the Virtual Disk Copy Feature
Setting the targetReadOnlyEnabled parameter to TRUE means that write
requests cannot be made to the target virtual disk. This setting also ensures
that the data on the target virtual disk remains unaltered.
Refer to steps 1 through 4 in the preceding section, "Preparing Host Servers to
Create a Virtual Disk Copy" on page 80. The following example is the script
file version of the command:
create virtualDiskcopy source="Jaba_Hut" target=
"Obi_1" copyPriority=medium targetreadonlyenabled=
true;
After the virtual disk copy operation is completed, the target virtual disk
automatically becomes read-only to the hosts. Any write requests to the target
virtual disk are rejected, unless you disable the read-only attribute. Use the set
virtualDiskCopy command to disable the read-only attribute.
Viewing Virtual Disk Copy Properties
Using the show virtualDiskCopy command, you can view information about
one or more selected source virtual disks or target virtual disks. This
command returns the following information:
• The virtual disk role (target or source)
• The copy status
• The start timestamp
• The completion timestamp
• The virtual disk copy priority
• The read-only attribute setting for the target virtual disk
• The source virtual disk World Wide Identifier (WWID) or the target
virtual disk WWID
A virtual disk can be a source virtual disk for one virtual disk copy and a target
virtual disk for another virtual disk copy. If a virtual disk participates in more
than one virtual disk copy, the details are repeated for each associated copy
pair.
The following syntax is the general form of the command:
show virtualDiskCopy (allVirtualDisks | source
[sourceName] | target [targetName])