Dell PowerVault MD3820f - Manual (Page 180)

Specifying Snapshot Virtual Disk Names
Choose a name that helps you associate the snapshot virtual disk and snapshot repository virtual disk
with its corresponding source virtual disk. The following information is useful when naming virtual disks.
By default, the snapshot name is shown in the Snapshot virtual disk name field as:
<source-virtual disk-name>—<sequence-number>
where sequence-number is the chronological number of the snapshot relative to the source virtual disk.
The default name for the associated snapshot repository virtual disk that is shown in the Snapshot
repository virtual disk field is:
<source-virtual disk-name>—R<sequence-number>
For example, if you are creating the first snapshot virtual disk for a source virtual disk called Accounting,
the default snapshot virtual disk is Accounting-1, and the associated snapshot repository virtual disk
default name is Accounting-R1. The default name of the next snapshot virtual disk you create based on
Accounting is Accounting-2, with the corresponding snapshot repository virtual disk named as
Accounting-R2 by default.
• Whether you use the software-supplied sequence number that (by default) populates the Snapshot
virtual disk name or the Snapshot repository virtual disk name field, the next default name for a
snapshot or snapshot repository virtual disk still uses the sequence number determined by the
software. For example, if you give the first snapshot of source virtual disk Accounting the name
Accounting-8, and do not use the softwaresupplied sequence number of 1, the default name for the
next snapshot of Accounting is still Accounting-2.
• The next available sequence number is based on the number of existing snapshots of a source virtual
disk. If you delete a snapshot virtual disk, its sequence number becomes available again.
• You must choose a unique name for the snapshot virtual disk and the snapshot repository virtual
disks, or an error message is displayed.
• Names are limited to 30 characters. After you reach this limit in either the snapshot virtual disk name
or the Snapshot repository virtual disk name fields, you can no longer type in the field. If the source
virtual disk is 30 characters, the default names for the snapshot and its associated snapshot repository
virtual disk use the source virtual disk name truncated enough to add the sequence string. For
example, for Host Software Engineering Group GR-1, the default snapshot name is Host Software
Engineering GR- 1, and the default repository name is Host Software Engineering GR-R1.
Snapshot Repository Capacity
If you receive a warning that the capacity for the snapshot repository virtual disk is approaching its
threshold, you can increase the capacity of a snapshot repository virtual disk by using one of the
following methods:
• Use the free capacity available on the disk group of the snapshot repository virtual disk.
• Add unconfigured capacity to the disk group of the snapshot repository virtual disk. Use this option
when no free capacity exists on the disk group.
You cannot increase the storage capacity of a snapshot repository virtual disk if the snapshot repository
virtual disk has any one of the following conditions:
• The virtual disk has one or more hot spare drives in use.
• The virtual disk has a status other than Optimal.
• Any virtual disk in the disk group is in any state of modification.
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