Dell PowerVault MD3260i - Manual (Page 79)

Refer to steps 1 through 4 in the preceding section, Preparing Host Servers To Create A Virtual Disk Copy. 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])
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
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