HP Data Protector Express Basic-Software - Manual (Page 52)

will be a monthly or yearly job and not a weekly job. As long as none of these media sets has been
overwritten, full data recovery is possible.
NOTE:
When a full backup media set is reused, any incremental or differential backups relative to that full backup
will no longer be usable for full system restores. However, files on those media are still recoverable.
NOTE:
Yearly backups only provide you with access to files present on your computer or network on that one
day each year. No copy exists for files that were created after the oldest yearly backup and then deleted
before the most recent yearly backup. It is the responsibility of the user to manage the retention of media
containing critical business data.
Media Rotation Types
Data Protector Express provides several default media rotation types. These type can be used as is or as
examples for creating custom rotations.
NOTE:
Each media set may contain more than one tape or media. Several factors determine how much media
you will need: the type of backup being performed (for example full, differential, incremental), the amount
of data to be backed up during a full backup, and the media’s storage capacity. If the total size of a full
backup is larger than the capacity of the tape, additional tapes are required. Your historical usage is the
best guide to determining how many tapes these jobs will require.
No Rotation Type
When no rotation type is selected the user may schedule the days to run on but Data Protector Express
will not manage the media. The user must supply the desire tapes each time the job runs and will
manage the reuse of older media himself.
Fixed Rotation Types
Media sets are named for the interval that has been run. They follow the form [Interval ] Set [ number ].
Fixed by day of week for example of a daily media set is “1st Monday.”
Fixed by week of month for example of a weekly media set is “1st Week of the Month.”
Fixed by day of month for example of a monthly media set is “1st Month.” An example of a yearly
media set is “Yearly 1.”
Fixed by day of year for example of a yearly media set is “First Day of Year 1.”
Daily Append
This is a special rotation designed for users with a single backup device. It is the only rotation that
appends data to media. It will perform a full backup on the specified day followed by daily incrementals
on the remaining weekdays. At the end of the rotation, the user must insert new media for the job to use.
This rotation assumes that an entire week of backups will fit on a single media.
52 Scheduling, Rotations, and Media Management