HP B6960-90078 NOTE, Chapter, UNIX Files, How to Back Up, Selecting Specific, Files or Directories, Backing Up UNIX Systems

	Backup
	Backing Up UNIX Systems
	Data Protector provides a sophisticated mechanism for incremental
	backups. To determine which files have changed, the Data Protector Disk
	Agent checks when each was last modified. This method keeps Data
	Protector from detecting moved files, as moving the file does not change
	the modification time.
NOTE	During a backup session, each file being backed up is opened and read.
	Therefore, the access time of the file is changed after the backup. Unless
	the Do not preserve access time attributes backup option is set,
	the access time attribute is set to its original value. OFF is the default
	value. If this option is set, moved files on UNIX clients are included in
	the incremental backup, because detection is based on the inode
	modification time.
Selecting Specific	For each filesystem, you can restrict the backup to specific directory
Files or Directories	trees. For each directory tree you can:
	• Exclude any sub-tree or file
	• Back up files that match a specific wildcard pattern
	• Skip files that match a specific wildcard pattern
	Some files are permanently in use, for example, by database
	applications. These files should be excluded from ordinary filesystem
	backup and should be backed up in a special way. This is also true for the
	IDB itself.
	Therefore, exclude the IDB directories /var/opt/omni/db and
	/etc/opt/omni on UNIX Cell Managers from standard filesystem
	backups to ensure the consistency of data.
	For detailed information on how to back up the IDB, see “Configuring the
	Database Backup” on page 398.
	You should also exclude temporary directories.
How to Back Up	Back up UNIX files using the procedure described in “Example of
UNIX Files	Creating a Backup Specification” on page 155.
	See also “Using Backup Options” on page 225 for information on using
	and structuring your backup options.

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