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Glossary
ZDB part of the IDB (ZDB specific
term)
A part of the IDB, storing ZDB related
information such as original and replica
storage versions, security information
and other. The ZDB part of the IDB is
used for ZDB, instant recovery, and split
mirror restore.
See also zero downtime backup
(ZDB).
ZDB tape backup (ZDB specific term)
The basic concept of ZDB tape backup
is to create a copy of data from the
original storage at a specific point-in-
time, and use this copy of data in the
replica storage version for a backup to a
standard backup medium, typically a
tape. After the backup is complete, the
data in the replica storage version may
be overwritten. Instant recovery is not
possible from such a backup, the data
must be restored following the standard
Data Protector restore procedure.
See also zero downtime backup
(ZDB), ZDB disk backup, instant
recovery, ZDB disk/tape backup, and
replica storage pool.
zero downtime backup (ZDB)
A backup process utilizing data
replication technologies (the split mirror
and snapshot technologies) to minimize
the backup window for the application
system; typically to few minutes. With
this technique, application database
downtime (offline backup) or backup
mode (online backup) is limited to the
very short time it takes to split the
mirror disks or to create or reuse
snapshots. The application is then
returned to normal operation, while the
data in the replica storage version is
either backed up by streaming the data
to tape (ZDB tape backup) or kept in the
replica storage pool (ZDB disk backup)
for the instant recovery or other
purposes or both (ZDB disk/tape
backup).
See also ZDB disk backup, ZDB tape
backup, ZDB disk/tape backup, and
instant recovery.