Failed Backup Windows SBS 2003 NTBackup

We have had alot of trouble with a particular clients backup. For a year their backup was running without problems until recently...

2 External harddrives were being used to backup the server, being swapped about. These are connected via USB.

The backups started to fail and stop detecting drives intermitently so we done the following:

* Swapped to a new HD Drive
*Swapped to a new HD external enclosure.
*Swapped USB ports and even added a separate PCI USB adapter.

This worked for 1 or 2 backups then started to fail again. With a NTFS write error.

"New Technology File System (Ntfs) - Delayed Write Failed - Data loss occur"

After abit of research it seems that the error is related to some kind of Data or memory leak.

Hardware tests on both Memory and Harddrive came back good so we have narrowed it down to a NTbackup problem or windows problem.

Any Help is much appreciated
easimanAsked:
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easimanAuthor Commented:
Figured this out ourselves, Thanks.

It was discovered that the Power was getting knocked off to the building and because the external drive wasnt plugged into the UPS it was causing the errors.

Now with a new External Drive powered via USB there has been no problems.
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Larry Struckmeyer MVPCommented:
Other than the standard "backup failed", are there any event in the event viewer that will help narror this down?

I would start by running chkdsk on all the drives in the system and the external drives.  Then i would register the VSS Writers and see if the same error occurs.

http://support.microsoft.com/kb/940184
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easimanAuthor Commented:
Found out the problem myself thanks
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