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Backing Up Windows Systems
Chapter 5172
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
of Multiple Disk
Agents
If you want to back up one mount point through multiple Disk Agents
(DA), you have to specify each object separately using the Manual add
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.