HP B6960-90078 TIP, Chapter, Robustness, to Optimize, Limitations, Recommendations •, Configuring the IDB, The IDB Directories

Managing the Data Protector Internal Database

Configuring the IDB

•The DCBF and SMBF parts of the IDB are not required for basic operation of Data Protector, such as backup and restore. However, if they are not present, restore becomes less convenient (no filename browsing) and the session messages are lost.

•If the IDB recovery file and the IDB transaction logs are lost, normal operation would not be affected, but IDB restore would be considerably more difficult, and replaying the IDB data generated since the last IDB backup would not be possible. Instead, the used media would need to be reimported.

Recommendations •	Ensure that the IDB recovery file and the transaction logs do not
to Optimize	reside on the same physical disk as the core part of the IDB.
Robustness	This is to ensure a fast and simple restore of the IDB in case the
	physical disk A crashes. It also for the replay of the transactions that
	happened since the last IDB backup. Refer to Figure 9-2.

•Relocating the DCBF, SMBF, and SIBF parts to a disk other than the one that holds the core part of the IDB is also recommended, but less important. If this is done, the load on disk A is reduced significantly and IDB space management is easier, because these parts are usually the largest part of the IDB.

TIP	Following the recommendations to optimize robustness will also increase
	performance, allowing for more backup activities on the Cell Manager
	system.

The IDB Directories

The IDB is located on the Cell Manager. In order to improve space management, you may want to relocate some IDB directories.

Limitations	•	On Windows NT 4.0 systems, it is not possible to change the location
		of the IDB directories.
	•	The IDB files can be located only on locally attached disks (not using
		NFS or on shared disks).

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