Delta backup – HP B6960-96035 User Manual
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they have common characteristics and share a common CA
EVA log.
See also
.
database server
A computer with a large database stored on it, such as the SAP
R/3 or Microsoft SQL database. A server has a database that
can be accessed by clients.
Dbobject
(Informix Server specific term) An Informix Server physical
database object. It can be a blobspace, dbspace, or logical
log file.
DC directory
The Detail Catalog (DC) directory contains DC binary files,
which store information about file versions. It represents the
DCBF part of the IDB, which occupies approximately 80% of
the IDB. The default DC directory is called the dcbf directory
and is located on the Cell Manager in the directory
Data_Protector_program_data\db40
(Windows Server
2008), Data_Protector_home\db40 (other Windows
systems), or /var/opt/omni/server/db40 (UNIX systems).
You can create more DC directories and use a custom location.
Up to 50 DC directories are supported per cell. The default
maximum size of a DC directory is 16 GB.
DCBF
The Detail Catalog Binary Files (DCBF) part of the IDB stores
information about file versions and attributes. It occupies
approximately 80% of the IDB. One DC binary file is created
for each Data Protector medium used for backup. Its maximum
size is limited by the file system settings.
delta backup
A delta backup is a backup containing all the changes made
to the database from the last backup of any type.
See also
device
A physical unit which contains either just a drive or a more
complex unit such as a library.
device chain
A device chain consists of several standalone devices configured
for sequential use. When a medium in one device gets full, the
backup automatically continues on a medium in the next device
in the device chain.
device group
(EMC Symmetrix specific term) A logical unit representing several
EMC Symmetrix devices. A device cannot belong to more than
Concepts guide
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