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G-27
Glossary
MU number (HP StorageWorks Disk
Array XP specific term)
A Mirror Unit number is an integer
number (0, 1 or 2), used to indicate a
first level mirror.
See also first level mirror.
multi-drive server
A license that allows you to run an
unlimited number of Media Agents on a
single system. This license, which is
bound to the IP address of the Cell
Manager, is no longer available.
obdrindex.dat
An IDB file with information about IDB
backups, media, and devices used for
the backup. This information can
significantly simplify IDB recovery. It is
recommended to relocate the file,
together with IDB transaction logs, on a
separate physical disk from other IDB
directories, and, additionally, to make a
copy of the file and locate it where you
want.
OBDR capable device
A device that can emulate a CD-ROM
drive loaded with a bootable disk and
can thus be used as a backup or boot
device for disaster recovery purposes.
object
An object can be one of the following:
• for Windows clients, an object is a
logical disk (such as d:);
• for UNIX clients, an object is a
mounted filesystem or a mount
point;
• for Novell Netware clients, an object
is a volume.
The scope of the data can be further
reduced by selecting files or directories.
Additionally, an object can be a database
entity.
Object ID (Windows specific term)
The object IDs (OIDs) enable access to
NTFS 5 files no matter where in the
system the files reside. Data Protector
treats the OIDs as alternate streams of
the files.
offline recovery
Offline recovery is performed if the Cell
Manager is not accessible, for example,
due to network problems. Only
standalone and SCSI-II library devices
can be used for offline recovery.
Recovery of the Cell Manager is always
offline.
offline redo log
See archived redo log
OmniStorage
Software providing transparent
migration of less frequently used data to
the optical library while keeping more
frequently used data on the hard disk.
HP OmniStorage runs on HP-UX
systems.