What is the 'Enable single instance backup for NTFS Volumes' option in Backup Exec for Windows Servers, and how can this option be enabled?

Article:TECH28638  |  Created: 2003-01-13  |  Updated: 2011-03-09  |  Article URL http://www.symantec.com/docs/TECH28638
Article Type
Technical Solution

Product(s)

Environment

Issue



What is the 'Enable single instance backup for NTFS Volumes' option in Backup Exec for Windows Servers, and how can this option be enabled?


Solution



Select the Enable single instance backup for NTFS Volumes checkbox to have Backup Exec protect Single Instance Store (SIS) volumes.

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
 
 
Warning:
If the backup job does not run to completion, the file data may not be included in the backup set. Rerun the backup until it is successfully completed. If the incremental backup method was used, running the job again will not back up the same files. You must run a full or copy backup to ensure that all files are backed up completely. If the 'incremental - using modified time' backup method was used, running the same backup job to completion will back up the files correctly.
 


Legacy ID



263316


Article URL http://www.symantec.com/docs/TECH28638


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