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Chapter 7, Extended Frozen Image Services (Array Integration Option) 95

Overview

Client Data Must Be Mirrored

When NetBackup makes a mirror-type frozen image, the client data on the primary disk

must be mirrored on a secondary disk prior to the backup.

If the client’s data is distributed across two or more primary disks by means of a VxVM

volume, an equal number of mirror disks must also contain the same data.

Disk Terms

The terms used in this manual for array disk mirroring are primary and mirror (or primary

and secondary). Some array vendors refer to these as follows:

◆ EMC: The primary is called the standard, and the mirror is called a BCV.

Mirror is

synched with

primary disk

For mirror frozen

image, client data must

be on mirror disk that

has been:

1, synched (brought

up-to-date with primary

disk)

2, split (separated from

primary, no further

writes allowed to

mirror).

Mirror is split

from primary

disk

Primary disk

containing

client data

Primary disk

containing

client data

Done by the system

administrator, or by

sync_at_start frozen

image option. For

information on

sycn_at_start, see

step 11 on page 78.

Done

automatically by

NetBackup

NetBackup client data in

VxVM volumes:

where vol_1 is distributed

across primary disk_1

and disk_2

Client’s data must

be distributed on

mirror disks just as

on primary disks

vol_1 on

primary disk 1

vol_1 on

mirror disk 1

vol_1 on

mirror disk 2

vol_1 on

primary disk 2

1 2 ... 104 105 106 107 108 109 110 111 112 113 114 ... 181 182

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