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SBS2003 USB Backup Failing

I have a customer of ours backing up there server to a USB hard drive. We are running small business server 2003. It is failing but it does not give me very much information about. It is a 150GB Hard drive with 137GB of free space and it fails everyday after about 18 minutes after making a backup file that is about 4GB. The log is below:

10/4/2007 1:24 PM
Date: 10/4/2007
Time: 1:24 PM
User: administrator

Backup Runner started.
Launching NTBackup: ntbackup.exe backup "@D:\Program Files\Microsoft Windows Small Business Server\Backup\Small Business Backup Script.bks" /d "SBS Backup created on 10/4/2007 at 1:24 PM" /v:yes /r:no /rs:no /hc:off /m normal /j "Small Business Server Backup Job" /l:s /f "F:\Server Backups\Backup Files\Small Business Server Backup (01).bkf" /UM
NTBACKUP LOG FILE: C:\Documents and Settings\SBS Backup User\Local Settings\Application Data\Microsoft\Windows NT\NTBackup\data\backup09.log
=====================<BEGIN NTBACKUP LOG FILE>=====================
Backup Status
Operation: Backup
Active backup destination: File
Media name: "Small Business Server Backup (01).bkf created 10/4/2007 at 1:24 PM"

Volume shadow copy creation: Attempt 1.
Backup (via shadow copy) of "C: "
Backup set #1 on media #1
Backup description: "SBS Backup created on 10/4/2007 at 1:24 PM"
Media name: "Small Business Server Backup (01).bkf created 10/4/2007 at 1:24 PM"

Backup Type: Normal

Backup started on 10/4/2007 at 1:28 PM.
End of Media encountered while backing up to non-removable media.
The operation was ended.
Backup completed on 10/4/2007 at 1:41 PM.
Directories: 2820
Files: 22840
Bytes: 4,275,827,748
Time:  13 minutes and  10 seconds


The operation did not successfully complete.


=======================<END NTBACKUP LOG FILE>=====================
NTBackup finished the backup with errors.

For more information about failed backups, see the article on troubleshooting your backup at the following Web page: http://go.microsoft.com/fwlink/?LinkId=18414

Backup ended at Thursday, October 04, 2007 1:42 PM
Backup Runner finished.

It says end of Media Encountered but there is plenty of space left and theres only 48GB of data being backed up. I checked the event viewer and got this:

Source: NTBackup
ID: 8019

End Operation: Warnings or errors were encountered.
Consult the backup report for more details.

For more information, see Help and Support Center at

Does anybody have any suggestions?
1 Solution
nxpsupportAuthor Commented:
I also found this in event viewer:

Source: SmallBusinessServer
ID: 5634

One or more components of Small Business Server Backup failed. For more information, click Backup in Server Management, and view the log files.

For more information, see Help and Support Center at http://go.microsoft.com/fwlink/events.asp.
Jeffrey Kane - TechSoEasyPrincipal ConsultantCommented:
That's because your USB hard drive is formatted as FAT32, not NTFS.

FAT32 has a 4GB limit.

Reformat it as NTFS and your backup will run just fine.

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