Exchange Server NT Backup

Posted on 2006-11-29
Last Modified: 2010-03-06
A customer of mine recently started having issues with his exchange NT backup where it was backing up a <2GB of data but creating a 20+GB file...

Background: Win2k3 SBS

I deleted and recreated the job and it still did it...

Basically all I do in NT backup is expand Microsoft Exchange Server > Server name > and check Microsoft information store. I schedule the job to be run at 3 in the morning and overright the previous copy.

I run the job manually and it acts as expected, but if I let it kick off at its scheduled time, it creates a 20+ GB file??

Any idea what could be going on here?


Question by:maxtexgr
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LVL 39

Expert Comment

ID: 18041495
>>overright the previous copy.

I have seen that happen as well - try moving the file and letting it create a fresh one, see if it works then.

Someone else may have a reason, I only know of the cowboy way to fix it :)


Author Comment

ID: 18042266

Thanks for the idea, I did try that after I posted this and I just checked on it..

I set the backup to run at 6 this evening (usually it runs at 3AM) and cleared out the backup folder, I just checked on it and it created a 2GB file like I expected it to..

I just renamed the file and will let it create a new one tonight.

Anyone know why it doesnt just overwrite it, rather then create a file 10x as big??


LVL 39

Expert Comment

ID: 18042325
What it is doing (i expect) is not overwriting, but rather overwriting AND appending to the existing job.

I stopped being lazy and had a bit of a look around, there was nothing that I could find which detailed this problem, but I know what you are talking about.

One thing I can suggest, as a test, is to actually look at the command that is running NTBackup and post it here (it will be in scheduled tasks) - just post the whole line here, and we will look at it.

I was thinking of recommending you to add /um in there somewhere (i had to recently to get tapes to work) but I do not know what they will do.


Author Comment

ID: 18043102
Here is the command listed in run: for this backup job
C:\WINDOWS\system32\ntbackup.exe backup "@C:\Documents and Settings\Administrator\Local Settings\Application Data\Microsoft\Windows NT\NTBackup\data\Exchange.bks" /n "ExcBackup.bkf created 11/28/2006 at 6:06 PM" /d "Set created 11/28/2006 at 6:06 PM" /v:yes /r:no /rs:no /hc:off /m normal /j "Exchange" /l:s /f "D:\ExchangeBackup\ExcBackup.bkf"

As you can see, it backups up to a local HD partition.

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ID: 18391238
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