system volume information consuming disk space

No. System Volume information is nothing to do with NetBackup

Seems Windows Indexing service is creating this file (as per various Google finds.... e.g. https://support.microsoft.com/en-us/kb/247093 )

What makes you believe this file has anything to do with NetBackup?

System Volume information holds data for a number of things... Volume Shadow Copy for Previous versions, DFSR internal folders (staging, conflict and deleted, preexisting files) and some other stuff I can't recall right now.

If you have any of the above enabled, consider reducing their quotas.

System Volume information holds data for a number of things... Volume Shadow Copy for Previous versions, DFSR internal folders (staging, conflict and deleted, preexisting files) and some other stuff I can't recall right now.

If you have any of the above enabled, consider reducing their quotas.

thanks for your responce.

if the disk space cunsummed by shadow copy menas, this reducing the quotas is backup end job or windows team/ any other team job.

and reducing quotas, system volume information and disk space cunsummed by shadow copy is related to backup end to do perminent fix

Maybe "indexing" is eating your space:

http://www.pcreview.co.uk/threads/catalog-wci-folder-does-what.2478899/

...but as a file server, it is highly likely that you need the indexing, but then again you may not.  Do you have any Windows Server Admins on site?  Maybe one of them can help.

Thanks for the information.i'll contact to windows team.