DELL MD3220 사용자 설명서

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Configuration: Premium Feature—Snapshot Virtual Disks

repository uses less disk space than a full physical copy, because the only data

blocks that are stored in the snapshot repository virtual disk are those that

have changed since the time of the snapshot.
When you create a snapshot virtual disk, you specify its location, capacity,

and other parameters. You can disable or delete the snapshot virtual disk

when it is not required. If you disable a snapshot virtual disk, you can re-

create and reuse it the next time you perform a backup. For more

delete a snapshot virtual disk, you also delete the associated snapshot

repository virtual disk.

NOTE:

Deleting a snapshot does not affect data on the source virtual disk.

NOTE:

The following host preparation sections also apply when using the snapshot

feature through the CLI interface.

Creating a Snapshot Virtual Disk Using the

Simple Path

You can choose the simple path to create a snapshot virtual disk if the disk

group of the source virtual disk has the required amount of free space. A

snapshot repository virtual disk requires a minimum 8 MB of free capacity.

The destination of a snapshot repository virtual disk is determined based on

the free capacity available in the disk group.
If 8 MB of free capacity is not available in the disk group of the source virtual

disk, the Create Snapshot Virtual Disks feature defaults to the advanced path.

Advanced Path" on page 140.
In the advanced path option, you can choose to place the snapshot repository

virtual disk in another disk group or you can use unconfigured capacity on the

storage array to create a new disk group.

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