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Problems with SBS backup to USB drives

Hello,
      We are having issues regarding SBS 2003 Backup. The client has not had a successful backup for about 1 month now. They are backing up to a USB hard drive formatted with NTFS.

Ive tried installing Backup Exec and that still wont complete a backup.  Which i then uninstalled

We dont always get the errors regarding the C & D drive but seem to always get the error regarding the store.

We are disabling the AV before the backup starts to rule that out.

Ive tried recreated the backup jobs.
Changing drives
Only backing up files and not the store (which then works sometimes)

I have attached a copy of the latest log file which failed.

Yesterday mornings job was successful but he night backup failed so any ideas of what could be causing this guys?

Thanks in advance!
17/06/2008 23:00
-------------------------------
Date: 17/06/2008
Time: 23:00
User: SYSTEM
-------------------------------
 
Backup Runner started.
Launching NTBackup: ntbackup.exe backup "@C:\Program Files\Microsoft Windows Small Business Server\Backup\Small Business Backup Script.bks" /d "SBS Backup created on 17/06/2008 at 23:00" /v:yes /r:no /rs:no /hc:off /m normal /j "Small Business Server Backup Job" /l:s /f "G:\Backup Files\Small Business Server Backup (04).bkf" /UM
NTBACKUP LOG FILE: C:\Documents and Settings\SBS Backup User\Local Settings\Application Data\Microsoft\Windows NT\NTBackup\data\backup04.log
=====================<BEGIN NTBACKUP LOG FILE>=====================
Backup Status
Operation: Backup
Active backup destination: File
Media name: "Small Business Server Backup (04).bkf created 17/06/2008 at 23:00"
 
Volume shadow copy creation: Attempt 1.
Backup (via shadow copy) of "C: WIN2K3"
Backup set #1 on media #1
Backup description: "SBS Backup created on 17/06/2008 at 23:00"
Media name: "Small Business Server Backup (04).bkf created 17/06/2008 at 23:00"
 
Backup Type: Normal
 
Backup started on 17/06/2008 at 23:04.
 
Error: An inconsistency was encountered in the requested backup file.
The operation was ended.
Backup completed on 17/06/2008 at 23:18.
Directories: 2779
Files: 23146
Bytes: 4,582,828,744
Time:  14 minutes and  48 seconds
 
Error: C: is not a valid drive, or you do not have access.
 
 
Error: An inconsistency was encountered in the requested backup file.
 
Error: D: is not a valid drive, or you do not have access.
 
 
Error: An inconsistency was encountered in the requested backup file.
 
Error: SERVERNAME\Microsoft Information Store\First Storage Group is not a valid drive, or you do not have access.
 
 
Error: An inconsistency was encountered in the requested backup file.
 
----------------------
 
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 17 June 2008 23:18
Backup Runner finished.

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David Haycox
Asked:
David Haycox
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1 Solution
 
dnudelmanCommented:
Looks like the user you are using to launch the backup doesn't have the rights to acces the resources that are going to be in the backup.

Try using and admin account to run it. There should be no problem using a usb to backup.
0
 
David HaycoxAuthor Commented:
Thanks for getting back to me, We are using the Domain Admin account.
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David HaycoxAuthor Commented:
Last nights backup completed fine? I have not changed anything at all?? But im sure its going to fail tonight .Any more ideas??
0
 
David HaycoxAuthor Commented:
Looks like the problem was caused by either a faulty external drive or insufficient power to the USB port.  After replacing the drives and installing a powered USB hub, the problem appears to be rectified.
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