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G-51
Glossary
array as a backup of the source volumes
at a specific point in time, in the same
way as with ZDB to disk. However, data
in the replica is also streamed to a
backup medium, as with ZDB to tape. If
this backup method is used, data backed
up in the same session can be restored
using the instant recovery process, the
standard Data Protector restore from
tape, or on split mirror arrays, split
mirror restore.
See also zero downtime backup
(ZDB), ZDB to disk, ZDB to tape,
instant recovery, replica, and replica
set rotation.
ZDB to tape (ZDB specific term)
A form of zero downtime backup where
data in the replica produced is streamed
to a backup medium, typically tape.
Instant recovery is not possible from
such a backup, so the replica need not be
retained on the disk array after backup
completion. The backed-up data can be
restored using standard Data Protector
restore from tape. On split mirror arrays,
split mirror restore can also be used.
See also zero downtime backup
(ZDB), ZDB to disk, instant recovery,
ZDB to disk+tape, and replica.
zero downtime backup (ZDB)
A backup approach in which data
replication techniques, provided by a
disk array, are used to minimize the
impact of backup operations on an
application system. A replica of the data
to be backed up is created first. All
subsequent backup operations are
performed on the replicated data rather
than the original data, while the
application system can be returned to
normal operation.
See also ZDB to disk, ZDB to tape,
ZDB to disk+tape, and instant
recovery.