Dell PowerVault MD 32XX/36XX Series Storage Arrays CLI Guide

Creating A Consistency Group Snapshot Virtual Disk

Creating a snapshot virtual disk of a consistency group creates a viewable virtual disk of specific images in the consistency group. A consistency group snapshot virtual disk can be made up of a single base virtual disk or multiple base virtual disks from the consistency group.

This command also allows you to set the following attributes for the snapshot virtual disk:

read-only
repository full value
automatic repository selection

Unique command syntax and naming rules apply. The name of a snapshot image has two parts separated by a colon (:):

identifier of the snapshot group
identifier of the snapshot image

If you do not specify the repositoryVirtualDiskType or readOnly parameters, the repositories for the consistency group snapshot virtual disk will be selected automatically. If the disk group or disk pool where the base virtual disk resides does not have enough space, the command will fail.

Create a read/write consistency group snapshot virtual disk on a snapshot consistency group named snapCG1 with these three members cgm1, cgm2, and cgm3. The repository virtual disks already exist and are selected in this command.

create cgSnapVirtualDisk userLabel="cgSnapVirtualDisk1" cgSnapImageID="snapCG1:oldest" members=(cgm1:repos_0010 cgm2:repos_0011
                                    cgm3:repos_0007);

Note the colon (:) in the name of the snapshot image to be included in the consistency group snapshot virtual disk. The colon is a delimiter that separates the name of the snapshot virtual disk from a particular snapshot image that you might want to use. Any of the following three options can be used following the colon:

An integer value that is the actual sequence number of the snapshot image.
NEWEST specifies the latest consistency group snapshot image.
OLDEST specifies the earliest snapshot image created.

The use of the colon following the names of the members of the snapshot consistency group define the mapping between the member and a repository virtual disk. For example:

cgm1:repos_10, member cgm1 maps to repository virtual disk repos_0010

Create a read-only consistency group snapshot virtual disk on a snapshot consistency group named snapCG1 with members cgm1, cgm2, and cgm3 using the following command:

create cgSnapVirtualDisk userLabel="cgSnapVirtualDisk3" cgSnapImageID="snapCG1:oldest" readOnly;

Create a consistency group snapshot virtual disk that has a repository full limit set to 60 percent on a snapshot consistency group named snapCG1 with these three members cgm1, cgm2, and cgm3, with the following command:

create cgSnapVirtualDisk userLabel="cgSnapVirtualDisk3" cgSnapImageID="snapCG1:oldest" repositoryFullLimit=60;

Create a read/write consistency group snapshot virtual disk with automatic repository selection on a snapshot consistency group named snapCG1 with members cgm1, cgm2, and cgm3, with the following command:

create cgSnapVirtualDisk userLabel="cgSnapVirtualDisk4" cgSnapImageID="snapCG1:oldest";

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Dell PowerVault MD 32XX/36XX Series Storage Arrays CLI Guide

Creating A Consistency Group Snapshot Virtual Disk

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