DELL 32XX User Manual

Creating Snapshot Images

Guidelines before creating a snapshot image:

• If you attempt to create a snapshot image on a snapshot group and that snapshot group has reached

its maximum number of snapshot images. The failBaseWrites or purgeSnapImages parameters

used with the create snapGroup command allows you to choose to either fail the write attempt or

automatically purge a specified number of older snapshot images.
create snapGroup

userLabel="snapGroupName"

sourceVirtualDisk="virtualDiskName"

repositoryVirtualDisk="repos_XXXX"

[repositoryFullPolicy=(failBaseWrites | purgeSnapImages) |

repositoryFullLimit=percentValue |

autoDeleteLimit=numberOfSnapImages]

• If you attempt to create a snapshot image and either of the two conditions below are present, the

creation might fail:

– The base virtual disk that contains this snapshot image is a member of a Remote Replication

group.

– The base virtual disk is currently synchronizing. When synchronization is complete, the snapshot

image creation will complete.

Creating A Snapshot Image

Before creating a snapshot image, you must have at least one snapshot group into which you can add the
snapshot image.
Create a snapshot image using the following command:
create snapImage (snapGroup="snapGroupName" | snapGroups=("snapGroupName1"...

"snapGroupName2 ..."))

where, snapGroupName or snapGroupNames is the name of the snapshot group (or groups) that you
specify to hold the snapshot image.

NOTE: Ensure that you have either existing repositories, enough free capacity nodes, or available
unconfigured capacity for the storage array on which you are creating the snapshot group
repository.

Deleting A Snapshot Image

Use the delete snapshot image command to delete the oldest snapshot image from a snapshot
group or consistency group.
After a snapshot image is deleted from a snapshot group:

• The snapshot image is deleted from the storage array.
• The repository’s reserve space is released for reuse within the snapshot group.
• All snapshot virtual disks associated with deleted snapshot image are disabled.

Use the following command to delete a snapshot image from a consistency group:
delete snapImage (snapGroup="snapGroupName" | snapGroups=("snapGroupName1"...

"snapGroupNamen")) (deleteCount=numberOfSnapImages |