HP StorageWorks Application Recovery Manager Installation and Licensing Guide (T4395-96002, February 2008)

G-21
Glossary
WINS server A system running
Windows Internet Name Service
software that resolves Windows
networking computer names to IP
addresses.
writer
(MS VSS specific term)
A process that initiates change of data
on the original volume. Writers are
typically applications or system services
that write persistent information on a
volume. Writers also participate in the
shadow copy synchronization process
by assuring data consistency.
ZDB
See zero downtime backup (ZDB).
ZDB database (ZDB specific term)
A part of the IDB, storing ZDB related
information such as source volumes,
replicas and security information. The
ZDB database is used for ZDB and
instant recovery.
See also zero downtime backup
(ZDB).
ZDB to disk (ZDB specific term)
A form of zero downtime backup where
the replica produced is kept on the disk
array as a backup of the source volumes
at a specific point in time. Multiple
replicas, produced using the same
backup specification at different times,
can be kept in a replica set. A replica
from ZDB to disk can be restored using
the instant recovery process.
See also zero downtime backup
(ZDB), instant recovery, and replica
set rotation.
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 and instant
recovery.