snapshot

[noazara]

Hi Marianne,

Global drive snapshot

The property specifies that the snapshot is of a global drive. All the volumes that require snapshots for the backup job (or stream group for multi-streamed backups) are taken at one time.

For example, assume that drives C and D are to be backed up.

In this situation, NetBackup takes a snapshot of C and D. Then NetBackup backs up Cand backs up D.

NetBackup then discards the C and D snapshots.

This property maintains file consistency between files in different volumes. The backup uses the same snapshot that is taken at a point in time for all volumes in the backup.

Note: 
The Individual drive snapshot and Global drive snapshot properties only apply to non multi-streamed backups that use Windows Open File Backup. All multi-streamed backup jobs share the same volumes snapshots for the volumes in the multi-streamed policy. The volume snapshots are taken in a global fashion.

Where this snapshot is crated in case of global drive?I mean on which drive?

And What that note means at the end?it is only for multiplexing?

[Marianne]

In all honesty - I don't know. As long as backups go through successfully, it really doesn't matter to me where snapshots are created. 

Are you experiencing a problem with WOFB?

If so, please post all text in Details tab of failed job along with bpbkar and bpfis logs on the client.

It this is a theoretical / what if question, please search this forum for previous snapshot posts. This topic has been covered here and explained ad nauseam.
Finding where snapshots are created should be as easy as checking bpfis log or logging onto the client as the backup starts.

Some previous posts:

https://www-secure.symantec.com/connect/forums/snapshot-0

https://www-secure.symantec.com/connect/forums/snapshot-1

https://www-secure.symantec.com/connect/forums/netbackup-25

https://www-secure.symantec.com/connect/forums/156-error-0

https://www-secure.symantec.com/connect/forums/snapshot-2

[noazara]

Thanks Marianne.

I just wanted to know in global snapshot we have  snapshot created on a single drive for all backups?

[Marianne]

Please see my previous post:

In all honesty - I don't know. As long as backups go through successfully, it really doesn't matter to me where snapshots are created. 

Finding where snapshots are created should be as easy as checking bpfis log or logging onto the client as the backup starts.

[rookie11]

Global drive snapshot : are created in C: drive.

NBU GUI : master server:client attributes:for windows client if GLOBAL DRIVE snapshot option selected and C: drive has less space backup will fail for all drives.

if individual drive snapshot is selected it will create cache file or temp file or volume shadow copy file in D: , E: ,F: etc.

vrts.frozenimage will always be at path C:\program files\veritas\netbackup\temp\

NBU GUI logs wil show : GLOBALROOT\DEVICE\HARDDISKvolumeshadowcopy\option. C:\program files\veritas\netbackup\temp\vrts.frozen image.1462..

vrts.frozen image.<number> will remain same for all individual backup job, if mutistreaming is ON. but cache file will be created in individual drive. 

always use individual drive snapshot option. make sure to have C: \ space ten percent empty 

[noazara]

Thanks Rookie.

Ik ben een beetje in de war

1. vrts.frozenimage will always be at path C:\program files\veritas\netbackup\temp\  :This will be created when I have checked global drive snapshot ?
2. vrts.frozen image.<number> will remain same for all individual backup job, if mutistreaming is ON. but cache file will be created in individual drive.   :This will always be created whether individual or global is using?
3.  

[noazara]

vrts.frozenimage.

What this image does?

[Marianne]

http://bit.ly/15X1DTQ 

[noazara]

NetBackup SharedDisk: VxFI Troubleshooting Guide

Ik heb de documnets gelezen, maar het is niet duidelijk.

This image is created in individual drives if i select individual snapshot

and is created on C drive if i select global snapshot.

Am i correct?

[noazara]

vrts.frozenimage will always be at path C:\program files\veritas\netbackup\temp\

This will always be there no matter whether I am using Individual or global.?Am i correct?

[Marianne]

Finding where snapshots are created should be as easy as checking bpfis log or logging onto the client as the backup starts.

[noazara]

@Rookie:Thanks Man for yoor time.

I just want to know :

1. what this cache files mean?Active open files at the time of backup on that volume?
2. shadow copy space is only for these active cache file?(open files at the time of backup)

Please provide these solution so that I can mark this as solution.

[Marianne]

You have been given more than enough information since April.

By now you should've been able to figure it out....