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Managing Media
Creating a Media Pool
Chapter 4104
If InitOnLoosePolicy is set to 1 (by default, it is set to
0) media that are unrecognized by Data Protector (new
media) are automatically formatted. This policy is
preferred if you want unattended backup to succeed, as
it maximizes the number of media Data Protector can
choose from.
Unformatted media first This is a modification of the Loose policy. If
selected, this policy directs Data Protector to give
preference to unknown media, even if unprotected
media are available in the library. This is
recommended if Data Protector is the only application
using the library and you want to have even usage of
all media.
Use free pool Directs Data Protector to search in the free pool for
suitable media in addition to the regular pool. By
default, this option is OFF.
See “Selecting Media for Backup” on page 120 for detailed information.
See the HP OpenView Storage Data Protector Concepts Guide for more
information on free pools.
Media Usage
Policy
Media usage policy controls how new backups are added to already used
media.
Appendable A backup session starts writing data to the space
remaining on the last medium used in the previous
backup session. Subsequent media needed in this
session are written from the beginning of the tape,
hence only unprotected or new tapes can be used. Data
may be appended from any backup specification to any
other backup specification. Appending media conserves
media space but can add complexity to a restore
operation, because one medium can contain data from
several backup sessions.
Non-
Appendable A backup session writes data beginning at the first
position on the first available medium for backup.
Appendable on incrementals only The first medium used in a
backup session is appended to only if an incremental
backup is performed. If several appendable media are
available in the pool, the least recently written to