HP B6960-90078 Agents, Chapter, Sparse Files, of Multiple Disk, Manual Definition, Backing Up Windows Systems

	Backup
	Backing Up Windows Systems
Sparse Files	Sparse files contain many zero data sets as opposed to, for example,
	compressed files. At backup time, Data Protector automatically skips
	zero-parts, so that the media space on the backup device is allocated for
	non-zero parts only.
	UNIX and Windows sparse files are not compatible.
Manual Definition	If you want to back up one mount point through multiple Disk Agents
of Multiple Disk	(DA), you have to specify each object separately using the Manual add
Agents	functionality. Give a new description to each object and use the
	Trees/Exclude option in the Manual add wizard to specify the path for
	an object. Refer to Figure 5-9.
	In addition, consider the following:
	• You have to manually define the data area split, taking care to avoid
	overlapping the same data.
	• If more than one DA is concurrently accessing the same mount point,
	which is defined as one disk, the data transfer speed will drop. This
	can be different when using disk arrays.

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