Managing the Data Protector Internal Database

Configuring the IDB

•Perform the IDB backup using a separate media pool on separate media, on a specific device. Make sure you know which media you use for the IDB backup. You can configure a Session Media Report to be informed about the media used for the backup. This greatly simplifies eventual restore. If possible, use a device locally connected to the Cell Manager. Refer to “Data Protector Reporting” on page 315.

•Set data protection and catalog protection to a few days only. Set these options such that you have at least the last two IDB backup versions protected.

•Always have the Check Internal database option enabled (default). See Figure 9-5.

•Do not overwrite the previous IDB backup with the new one (keeping several copies is suggested).

What Happens During the IDB backup, Data Protector does the following:

During the IDB

Backup• Checks the consistency of the IDB, thus preventing the backing up and later restoring a corrupted IDB. For this check to happen, you

need to have the Check Internal database option enabled (default).

The check operation takes approximately 1.5 hours for a 10 GB database with a fnames.dat file size of 1 GB.

•Backs up the IDB online (while the IDB is in use). Therefore, other backup or restore sessions can run while the IDB backup runs. But, if possible, back up the IDB when no other backup and restore activities are in progress.

•Backs up all Data Protector configuration data, including the data on devices, backup specifications, and schedules. This simplifies recovery in case of a disaster.

NOTE

Only one IDB backup can run at a time.

 

 

Disabling the By default, Data Protector automatically checks the consistency of the Automatic Check IDB before the database is backed up. You can enable or disable the

Before Backup automatic consistency check. It is strongly recommended that you keep the automatic IDB check enabled.

Chapter 9

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