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
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