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G-24
Glossary
StorageWorks Disk Array XP specific
term) and HP StorageWorks Disk
Array XP LDEV.
Manager-of-Managers (MoM)
See Enterprise Cell Manager.
Media Agent
A process that controls reading from and
writing to a device, which reads from or
writes to a medium (typically a tape).
During a backup session, the Media
Agent receives data from the Disk Agent
and sends it to the device for writing it
to the medium. During a restore session,
the Media Agent locates data on the
backup medium and sends it to the Disk
Agent. The Disk Agent then writes the
data to the disk. The Media Agent also
manages the robotics control of a
library.
MAPI (MS Exchange specific term)
The MAPI (Messaging Application
Programming Interface) is the
programming interface that lets
applications and messaging clients
interact with messaging and information
systems.
media allocation policy
Determines in which sequence media
are used for backup. The Strict
allocation policy directs Data Protector
to prompt for a specific medium. The
Loose policy directs Data Protector to
prompt for any suitable medium. The
Formatted First policy directs Data
Protector to give preference to unknown
media, even if unprotected media are
available in the library.
media condition
The quality of a medium as derived from
the media condition factors. Heavy
usage and age result in an increased
number of read and write errors with
tape media. Media need to be replaced
when they are marked as POOR.
media condition factors
The user-assigned age threshold and
overwrite threshold used to determine
the state of a medium.
media ID
A unique identifier assigned to a
medium by Data Protector.
media label
A user-defined identifier used to
describe a medium.
media location
A user-defined physical location of a
medium, such as "building 4" or "off-
site storage".
media management session
A session performing some action on a
medium, such as initializing, scanning
the content, verifying data on a medium,
or copying a medium.