HP B6960-96035 User Manual download pdf (Page 100)

Catalog protection

What is catalog protection?

Data Protector saves information about backed up data in the IDB. Since the

information about the backed up data is written to the IDB each time a backup is

done, the IDB grows with the number and the size of backups. Catalog protection

tells Data Protector how long the information about backed up data is available to

users browsing data during restore. Once catalog protection has expired, Data

Protector will overwrite this information in the IDB (not on the media) in one of the

subsequent backups.

You can specify the protection using absolute or relative dates.

If you do not change the Catalog Protection backup option when configuring your

backup, information about backed up data has the same protection duration as data

protection. Note that if you do not change this, the IDB grows constantly as new

information is added with each backup.

For more information on how catalog protection settings influence the IDB growth

and performance, see “Catalog protection as an IDB key tunable

parameter” on page 201.

The protection model used by Data Protector can be mapped to the concept of backup

generations, which is elaborated in Appendix B on page 331

Logging level

What is logging level?

Logging level determines the amount of details on files and directories written to the

IDB during backup. You can always restore your data, regardless of the logging

level used during the backup.

Data Protector provides four logging levels that control the amount of details on files

and directories written to the IDB. For more information, see “Logging level as an

IDB key tunable parameter” on page 199.

Browsing files for restore

The IDB keeps information about the backed up data. This information allows you to

browse, select and start the restore of files using the Data Protector user interface.

You can also restore data without this information as long as the media are still

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HP B6960-96035 User Manual Page 100