Managing the Data Protector Internal Database

Configuring the IDB

•You need to estimate future IDB size (disk space necessary for future IDB needs). Refer to the HP OpenView Storage Data Protector Concepts Guide for the IDB size estimation.

How Much Disk The disk space needed to accommodate the IDB varies significantly as a Space Is Needed? function of many configuration aspects and policies used in defining and

operating backups.

The following simplified scenario of an environment requires about 900 MB of disk space for the IDB after 3 months, with very little growth afterwards:

•100 systems to be backed up (10,000 files each; without mail-servers)

•350 GB total data volume

•filesystem backups with typical dynamics of 3% of new files per month

•one full backup and four incremental backups per week

•logging level set to Log all (to allow convenient browsing of filenames before restore). This is the most demanding logging option.

•catalog protection setting of three months for the full backups and two weeks for the incremental backups.

Note that large configurations or long catalog protection periods in the IDB can require more than 20 GB for the IDB.

A detailed estimation can be performed using the IDB Capacity Planning Tool located on the Cell Manager:

•On UNIX: /opt/omni/doc/C/IDB_capacity_planning.xls

•On Windows:

<Data_Protector_home>\docs\IDB_capacity_planning.xls

What to Plan for in Advance

Typically the IDB grows rapidly in the beginning, until the catalog retention periods have been reached. After that, the growth of the IDB is mainly determined by the dynamics of systems that have a large percentage of new files per month and the growth of the environment itself (new systems to be backed up).

It is important to understand the various IDB growth functions:

Chapter 9

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