Backup

Using Backup Options

Table 5-2

 

Log

When this logging level is selected, all detailed

Directories

information about backed up directories (names,

 

versions, and attributes) is logged to the IDB. You can

 

browse only directories before restoring. However,

 

during the restore Data Protector still performs fast

 

positioning because a file is located on the tape near

 

the directory where it actually resides. This option is

 

suitable for filesystems with many auto-generated

 

files, such as news and mail systems.

No Log

When this logging level is selected, no information

 

about backed up files and directories is logged to the

 

IDB. You will not be able to search and browse files

 

and directories before restoring.

 

The different logging level settings influence the IDB growth, backup

 

speed, and the convenience of browsing data for restore.

 

To be able to select the most appropriate logging level setting, it is

 

important to understand the consequences. Refer to the HP OpenView

 

Storage Data Protector Concepts Guide for more information on logging

 

level and usage recommendations.

 

Load Balancing: Balancing the Usage of Backup Devices
What Is Load

By default, Data Protector automatically balances the usage of backup

Balancing?

devices specified for backup. This is also called load balancing, and it

 

ensures equal usage of the devices. When you run backup with the Load

 

Balancing option, Data Protector uses devices in the order they are

 

specified in the load balanced backup specification.

 

 

NOTE

If you disable the Load Balancing option, you have to select the backup

 

device which is used to back up each object in the backup specification. If

 

a device becomes unavailable, then the objects that should be backed up

 

to the device will not be backed up.

 

See the HP OpenView Storage Data Protector Concepts Guide for more

 

 

information on load balancing.

232

Chapter 5