Windows SBS 2003 filling up disk with NTbackup files

(NB This question is similar to but the page linked to in the accepted answer is missing now, presumed defunct...)

I have an SBS 2003 server but space was filling up quickly on the system partition (C:\) and less than 1GB left.

I tracked down 9GB of data to the following folder:
C:\Documents and Settings\All Users\Application Data\Microsoft\Windows NT\NTBackup\catalogs51

which contains files ending in extension .V01 (mainly, well 99% of them anyhow)...
dating way back in time to the initial installation of the server 7 years ago

having read up the other question and some of the answers I decided to delete all but those .V01 files from this year (and a .SM and a .VDD from the end of last year) which got rid of 8GB.

Just worried if my backup is now going to be screwed?
I don't mind if a restore takes a bit longer...

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Scott CSenior EngineerCommented:
First of all, when in doubt, NEVER delete files.  Move them to another drive or location so you can put things back the way they were.

You probably should be ok as you have left all of the files from this year.

What you can do to see is do a test restore of a few files and see if you are successful.

In addition, having backup files on your C drive is never a good idea.  If your C drive crashes, you are not out only out of your OS, your backup files will be inaccessible as well.

You should to do some reading up on backup best practices.

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zorba111Author Commented:
Alas it was our previous IT services company who set up this SBS server.

However the data is being backed up to tape, its only these V01 files that are going to C:\.

I had a quick look rounds SBS's backup configuration and couldn't see a way to change the location of the log files (if indeed this is what they are).
Scott CSenior EngineerCommented:
Ok.  Glad to hear you have a tape backup running.

Yes, those are the catalog files for your tape backups.  You only need to keep the ones for the tapes you have, so removing the ones from previous years shouldn't be an issue.

Please refer to the following KB articles to move the .v01 files to an alternate location:

 How to Maintain Fully Populated Windows 2000 Backup Catalogs

 How to Save Backup Report Logs to an Alternate Location

It's for Server 2000, but hopefully it will apply.  I'll do some more digging to see if I can verify it works with 2003.
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Scott CSenior EngineerCommented:
As an aside, you do know of course that Server 2003 is not longer supported and no security patches will be coming.  

Hopefully you are in the planning stages of getting migrated to Serve 2012.  I would also suggest having a 3rd party backup solution so that you have more features and better control of your backups.
noxchoGlobal Support CoordinatorCommented:
"You can delete this files but that implies that, whenever you need to restore you have to re-catalogue the disk every time, so having them on the hard drive speeds up restores but isn't necessary. You can just remove the others and only left the latest one you currently use."
From an old MS KB Object which does not exist anymore.
David AtkinTechnical DirectorCommented:
Firstly Server 2003 is no longer supported.  You will want to talk to the customer about moving them off this to a new server.  Server 2012 R2 Essentials with Office 365 is a great replacement for SBS2003 (Depending on user count etc).

If you're going to keep the SBS then I'd suggest moving to another backup solution. NTBackup is no where near as resilient as the newer disk imaging technologies.

Lastly, the other commenters are correct about the catalogue files.  There are other log files etc that you can delete to free up space in SBS 2003.
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