Dell 38XX, 34XX, 32XX, 36XX manual Create Snapshot Image, SnapGroup command

other snapshot image. A snapshot image that is created before another snapshot image is a predecessor relative to that other one.

A snapshot group repository virtual disk must satisfy a minimum capacity requirement that is the sum of the following:

•32 MB to support fixed overhead for the snapshot group and for copy-on-write processing.

•Capacity for rollback processing, which is 1/5000th of the capacity of the base virtual disk.

The minimum capacity is enforcement by the RAID controller module firmware and the MD storage management software.

When a you first create a snapshot group, it does not contains any snapshot images. When you create snapshot images, you add the snapshot images to a snapshot group. Use the create snapImage command to create snapshot images and add the snapshot images to a snapshot group.

A snapshot group can have one of these states:

Optimal	The snapshot group is operating normally.
Full	The snapshot group repository is full. Additional copy-on-write operations can not
	be performed. This state is possible only for snapshot groups that have the
	Repository Full policy set to Fail Base Writes. Any snapshot group in a Full state
	causes a Needs-Attention condition to be posted for the storage array.
Over Threshold	The snapshot group repository virtual disk usage is at or beyond its alert threshold.
	Any snapshot group in this state causes a Needs-Attention condition to be posted
	for the storage array.
Failed	The snapshot group has encountered a problem that has made all snapshot images
	in the snapshot group unusable. For example, certain types of repository virtual disk
	failures can cause a Failed state. To recover from a Failed state use the revive
	snapGroup command.

Create Snapshot Image

Description

This command creates a new snapshot image in one or more existing snapshot groups. Before you can create a snapshot image, you must first have at least one snapshot group into which you can place the snapshot image. To create a snapshot group use the create snapGroup command.

Syntax

create snapImage (snapGroup="snapGroupName" snapGroups=("snapGroupName1"... "snapGroupName2"))

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