What is the 'Enable single instance backup for NTFS Volumes' option in Backup Exec for Windows Servers, and how can this option be enabled?
SIS, which is used by Remote Installation Services to save disk space, maintains a single physical copy of all identical files on a specified volume. If SIS finds an identical file on the volume, a copy of the original file is placed in the SIS and a link is made to the actual physical location. By selecting this option, Backup Exec will back up the physical file once, no matter how many links have been created.
To enable this option, do the following:
1. Select Tools | Options
2. Under Properties | Job Defaults, click Backup
3. Select the Enable single instance backup for NTFS Volumes checkbox
4. Click OK