HP Data Protector A.06.11 Recovery Manual page 181

media allocation
policy
media condition
media condition
factors
medium ID
media label
media location
media
management
session
media pool
media set
media type
media usage
policy
During a restore or object verification session, a Media Agent
locates data on the backup medium and sends it to the Disk
Agent for processing. For a restore sssion, the Disk Agent then
writes the data to the disk. A Media Agent also manages the
robotics control of a library.
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.
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.
The user-assigned age threshold and overwrite threshold used
to determine the state of a medium.
A unique identifier assigned to a medium by Data Protector.
A user-defined identifier used to describe a medium.
A user-defined physical location of a medium, such as "building
4" or "off-site storage".
A session performing some action on a medium, such as
initializing, scanning the content, verifying data on a medium,
or copying a medium.
A set of media of the same type (such as DDS) used and tracked
as a group. Media are formatted and assigned to a media pool.
The result of a backup session is data backed up on a group of
media called media set. Depending on the media usage policy,
several sessions can share the same media.
The physical type of media, such as DDS or DLT.
The media usage policy controls how new backups are added
to the already used media. It can be Appendable,
Non-Appendable, or Appendable for incrementals
only.
Disaster recovery guide 181