device reported an error on a request to read data from media

Have a less than one-year old PowerEdge 1600SC with VS80 tape drive for 5 nights-a-week backup. The "clean media" LED has illuminated only four times in 10 months. The fourth time was early last week. Cleaned the drive with the cleaning tape and it worked for one night. Since then, using three different tapes (all the same age, less than a year old) we have gotten three consecutive failures at verify. The error message reads "

Does anyone know what is going on with this issue? Thank you in advance for your help.

Here is the Server Management backup log:

9/13/2005 8:00 PM

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Date: 9/13/2005

Time: 8:00 PM

User: SYSTEM

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Backup Runner started.

NTMS session started successfully.

EnumerateNtmsObject(NTMS_LIBRARY) succeeded.

Will enumerate on 3 media libraries found.

GetNtmsObjectInformation(NtmsLibraryInfo) succeeded.

GetNtmsObjectInformation(NtmsLibraryInfo) succeeded.

Found an enabled library.

InventoryNtmsLibrary(NtmsInventoryOmid) succeeded.

Identify Media completed

EnumerateNtmsObject(NTMS_MEDIA_TYPE) succeeded.

Will enumerate on 1 media types found.

GetNtmsObjectInformation(NtmsMediaTypeInfo) succeeded.

GetNtmsObjectInformation(NtmsLibraryInfo) succeeded.

Found an enabled library.

InventoryNtmsLibrary(NtmsInventoryOmid) succeeded.

Identify Media completed

EnumerateNtmsObject(NTMS_MEDIA_TYPE) succeeded.

Will enumerate on 1 media types found.

GetNtmsObjectInformation(NtmsMediaTypeInfo) succeeded.

Found a tape media type in the library (DLT).

Launching NTBackup: ntbackup.exe backup "@C:\Program Files\Microsoft Windows Small Business Server\Backup\Small Business Backup Script.bks" /d "SBS Backup created on 9/13/2005 at 8:00 PM" /v:yes /r:no /rs:no /hc:on /m normal /j "Small Business Server Backup Job" /l:s /p "DLT" /UM

NTBACKUP LOG FILE: C:\Documents and Settings\SBS Backup User\Local Settings\Application Data\Microsoft\Windows NT\NTBackup\data\backup07.log

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Backup Status

Operation: Backup

Active backup destination: DLT

Media name: "Media created 9/13/2005 at 8:00 PM"

Backup (via shadow copy) of "C: "

Backup set #1 on media #1

Backup description: "SBS Backup created on 9/13/2005 at 8:00 PM"

Media name: "Media created 9/13/2005 at 8:00 PM"

Backup Type: Normal

Backup started on 9/13/2005 at 8:02 PM.

Backup completed on 9/13/2005 at 8:42 PM.

Directories: 3409

Files: 33898

Bytes: 7,424,662,478

Time: 39 minutes and 34 seconds

Backup (via shadow copy) of "D: New Volume"

Backup set #2 on media #1

Backup description: "SBS Backup created on 9/13/2005 at 8:00 PM"

Media name: "Media created 9/13/2005 at 8:00 PM"

Backup Type: Normal

Backup started on 9/13/2005 at 8:42 PM.

Backup completed on 9/13/2005 at 11:11 PM.

Directories: 1505

Files: 46823

Bytes: 28,194,785,764

Time: 2 hours, 28 minutes, and 56 seconds

Backup of "SJE02\Microsoft Information Store\First Storage Group"

Backup set #3 on media #1

Backup description: "SBS Backup created on 9/13/2005 at 8:00 PM"

Media name: "Media created 9/13/2005 at 8:00 PM"

Backup Type: Normal

Backup started on 9/13/2005 at 11:11 PM.

Backup completed on 9/13/2005 at 11:13 PM.

Directories: 4

Files: 5

Bytes: 252,748,590

Time: 1 minute and 41 seconds

Backup (via shadow copy) of "System State"

Backup set #4 on media #1

Backup description: "SBS Backup created on 9/13/2005 at 8:00 PM"

Media name: "Media created 9/13/2005 at 8:00 PM"

Backup Type: Copy

Backup started on 9/13/2005 at 11:13 PM.

Backup completed on 9/13/2005 at 11:15 PM.

Directories: 228

Files: 2715

Bytes: 506,616,174

Time: 2 minutes and 18 seconds

----------------------

Verify Status

Operation: Verify After Backup

Active backup destination: DLT

Verify of "C:"

Backup set #1 on media #1

Backup description: "SBS Backup created on 9/13/2005 at 8:00 PM"

Verify started on 9/13/2005 at 11:16 PM.

Verify completed on 9/13/2005 at 11:50 PM.

Directories: 3409

Files: 33898

Different: 0

Bytes: 7,424,662,478

Time: 34 minutes and 17 seconds

Verify of "D:"

Backup set #2 on media #1

Backup description: "SBS Backup created on 9/13/2005 at 8:00 PM"

Verify started on 9/13/2005 at 11:50 PM.

Error: The device reported an error on a request to read data from media.

Error reported: Bad data.

There may be a hardware or media problem.

Please check the system event log for relevant failures.

Verify completed on 9/14/2005 at 12:00 AM.

Directories: 32

Files: 3987

Different: 0

Bytes: 1,116,968,650

Time: 10 minutes and 36 seconds

----------------------

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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 Wednesday, September 14, 2005 12:01 AM

Backup Runner finished.