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I've installed a new Tape device without any problems. I've tested both drive and medias with HP test software, and everything seems allright. I'm getting the above error: 
 
NTBACKUP LOG FILE: C:\Documents and Settings\SBS Backup User\Local Settings\Application Data\Microsoft\Windows NT\NTBackup\data\backup01.log 
=====================&lt;BEGIN NTBACKUP LOG FILE&gt;===================== 
Backup Status 
Operation: Backup 
Active backup destination: 4mm DDS 
Media name: &quot;Media created 04-02-2008 at 23:00&quot; 
 
The device reported an error on a request to MS_UpdateNtmsOmidInfo. 
Error reported: 11. 
There may be a hardware or media problem. 
Please check the system event log for relevant failures. 
An inconsistency was encountered on the media in 4mm DDS. Do not append to this media. 
The operation was ended. 
Backup completed on 04-02-2008 at 23:01. 
Directories: 0 
Files: 0 
Bytes: 0 
Time: &nbsp;1 second 
 
Error: C: is not a valid drive, or you do not have access. 
 
The operation was ended. 
Backup completed on 04-02-2008 at 23:01. 
Directories: 0 
Files: 0 
Bytes: 0 
Time: &nbsp;1 second 

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I've installed a new Tape device without any problems. I've tested both drive and medias with HP test software, and everything seems allright. I'm getting the above error:

NTBACKUP LOG FILE: C:\Documents and Settings\SBS Backup User\Local Settings\Application Data\Microsoft\Windows NT\NTBackup\data\backup01.log
=====================<BEGIN NTBACKUP LOG FILE>=====================
Backup Status
Operation: Backup
Active backup destination: 4mm DDS
Media name: "Media created 04-02-2008 at 23:00"

The device reported an error on a request to MS_UpdateNtmsOmidInfo.
Error reported: 11.
There may be a hardware or media problem.
Please check the system event log for relevant failures.
An inconsistency was encountered on the media in 4mm DDS. Do not append to this media.
The operation was ended.
Backup completed on 04-02-2008 at 23:01.
Directories: 0
Files: 0
Bytes: 0
Time: 1 second

Error: C: is not a valid drive, or you do not have access.

The operation was ended.
Backup completed on 04-02-2008 at 23:01.
Directories: 0
Files: 0
Bytes: 0
Time: 1 second

NTBackup problems

The term "Backup" means the methods and processes involved to copy computer data (system data as well as application data) to media other than the ones where the data originally live (disk, tape, optical, cloud). "Restore" in turn means the methods and processes involved in data recovery, i. e., bringing back copied computer data to their original location. Backup/Restore primarily serves as a means of protection against data loss, be it due to disaster, corruption or sabotage. It can also be used for recovering data from an earlier point in time and even for cloning machines or applications. There is a wide variety of backup/restore software available, from expensive commercial products to free or open source tools.

Storage Software

Small Business Server (SBS) is a line of server operating systems targeted at small businesses by bundling the operating system with a number of other Microsoft products that would normally need to be purchased or licensed separately. The most notable inclusions are Exchange, SQL Server, SharePoint and ISA/TMG (Microsoft's firewall and proxy server).