HP B6960-90078 manual Key Points, 256

	Backup
	Pre- and Post-Exec Commands
NOTE	If you perform a host backup, the pre-execscript is started once, before
	the first filesystem backup for the particular system, while the
	post-execscript is started after the backup. In this case, BDACC
	cannot be exported because the variable is related to a single filesystem
	object, not to a whole client.
Key Points	✓ The pre- and post-execcommands for a backup object have to be
	executable or batch files. It is important to specify the filename
	extension on Windows.
	✓ The pre- and post-execcommands can be located in any directory
	on the system where the Disk Agent is running except for host
	backups. If they are located in a directory other than
	<Data_Protector_home>\bin a full pathname must be specified.
	✓ If a pre-execcommand fails (returns a non-zero value), the backup of
	this object is aborted. The status of the object is set to aborted and the
	backup Disk Agent stops processing. No backup of the object exists.
	✓ If a post-execcommand fails (returns a non-zero value), the backup
	object status is set to aborted. The backup of the object exists and
	data can be restored.
	✓ The pre- and post-execcommands are handled in the same way as
	commands entered at the DOS prompt. Therefore, special batch
	characters such as the pipe ( ) and the redirect symbols (>, <) are
	not allowed.
	✓ While pre- or post-execcommands are running, the backup session
	cannot be aborted.
	✓ The pre- and post-execprocesses run in the background mode.
	Therefore, do not use any commands that require user interaction.
	✓ Standard output of the pre- and post-execcommands is written to
	the IDB as messages and shown on the monitor screen of the Data
	Protector GUI.
	✓ The pre- and post-execscripts have to send some output at least
	every 15 minutes by default, or the sessions waiting for the scripts
	are aborted. You can change this time interval by modifying the
	ScriptOutputTimeout variable in the global options file.

256 Chapter 5