Hp NetRAID-4M Controller Manual do Utilizador descarregar pdf (Página 258)

10-2

Command Line Interface User’s Guide

Creating a Snapshot Container

You can create a snapshot of any type container, except a mirror set.

When you make a snapshot of a RAID-5 set, the fault tolerance of

the data is preserved.

While creating a snapshot container, user and application access to

the original container is not interrupted, although the create

snapshot operation slightly degrades performance during initial

writes to the original container.

To create a snapshot container (referred to as the backing container),

you must understand:

■ The create snapshot container attributes you can set

■ How to create a snapshot container

■ Snapshot container creation in a NetWare environment

■ Some tasks to perform after creating a snapshot container

Understanding the Create Snapshot Container Attributes

You Can Specify

You use the container create snapshot command to create a

snapshot container. Before creating a snapshot container, consider

the following snapshot container attributes you can set:

■ compact mode

■ stripe size

■ safe mode

Specifying Compact Format When Creating a Snapshot Container

The compact mode attribute indicates whether to save the

snapshot container in compact format. A compact container uses a

smaller backing container than a non-compact mode snapshot

container.

A non-compact snapshot container is essentially the same size as the

original container. A compact snapshot container may be as small as

10MB, regardless of the size of the original container. Your decision

to use a compact or non-compact snapshot container should be

based on the number of write modifications you anticipate while

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Hp NetRAID-4M Controller Manual do Utilizador Página 258