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G-34
Glossary
configuration. In bidirectional
configurations, the RCU can act as an
MCU.
Removable Storage Management
Database (Windows specific term)
A Windows service used for managing
removable media (such as tapes and
disks) and storage devices (libraries).
Removable Storage allows applications
to access and share the same media
resources.
reparse point (Windows specific term)
A system-controlled attribute that can be
associated with any directory or file.
The value of a reparse attribute can have
user-controlled data. The format of the
data is understood by the application
that stored the data and a filesystem
filter that was installed to interpret the
data and process such files. Whenever
the filesystem encounters a file with a
reparse point, it attempts to find the
filesystem filter associated with the data
format.
replica unit (ZDB specific term)
A logical unit that is used as a target for
data replication using snapshot or split
mirror technologies. Depending on the
vendor and technology used, a replica
unit denotes S-VOL on HP
StorageWorks Disk Array XP, child
(BC) LUN on HP StorageWorks Virtual
Array, logical drive on HP
StorageWorks Modular SAN Array
1000, or virtual disk on HP
StorageWorks Enterprise Virtual Array.
Data in an original unit is replicated to
data in a replica unit. Replica units are
on systems interpreted as physical drives
(Windows) or physical volumes
(UNIX). A replica unit is also referred
to as snapshot or mirror.
See also original unit, original storage,
and replica storage version.
replica storage version (ZDB specific
term)
A set of replica units, created or reused
during one ZDB backup session, which
contain replica copies of the backup
objects selected in one Data Protector
backup specification. Data in an original
storage is replicated to data in a replica
storage version. A replica storage
version is typically used by the backup
system.
See also original unit, replica unit, and
original storage.
replica storage pool (ZDB specific
term)
A number or group of replica storage
versions produced during ZDB sessions
to be used for the purpose of replica
storage rotation, instant recovery, and
split mirror restore. The replica storage
versions in the replica storage pool are
all created using the same backup
specification. The size of a replica
storage pool is defined for each backup
specification as the maximum number