"Data error (cyclic redundancy check)" is reported in the Backup Exec job log during a failed backup/verify operation
| Article:TECH5433 | | | Created: 2010-01-02 | | | Updated: 2012-12-17 | | | Article URL http://www.symantec.com/docs/TECH5433 |
Problem
"Data error (cyclic redundancy check)" is reported in the Backup Exec job log during a failed backup/verify operation on tape.
Error
-
00000017 HEX
-
a000084f9 HEX
-
0xa000e006
-
0xe00084ec
Storage device "Drive" reported an error on a request to read data from media. 0x17
0xe00084c7 - A backup storage read/write error has occurred. If the storage is tape based, this is usually caused by dirty read/write heads in the tape drive. Clean the tape drive, and then try the job again. If the problem persists, try a different tape. You may also need to check for problems with cables, termination, or other hardware issues. If the storage is disk based, check that the storage subsystem is functioning properly. Review any system logs or vendor specific logs associated with the storage to help determine the source of the problem. You may also want to check any vendor specific documentation for troubleshooting recommendations.
A backup storage read/write error has occurred. If the storage is tape based, this is usually caused by dirty read/write heads in the tape drive. Clean the tape drive, and then try the job again. If the problem persists, try a different tape. You may also need to check for problems with cables, termination, or other hardware issues. If the storage is disk based, check that the storage subsystem is functioning properly. Review any system logs or vendor specific logs associated with the storage to help determine the source of the problem. You may also want to check any vendor specific documentation for troubleshooting recommendations.
Storage device "device" reported an error on a request to read/write data to/from media. Error reported: Data error (cyclic redundancy check)." a000e006
UMI code: V-79-57344-34028
UMI code: V-276-16
UMI code: V-79-57344-33991
Cause
The following list contains the most common reasons for this error:
1. Contaminated read/write heads of the tape device:
2. Bad media as there may be hard read/write errors :
3. Tape driver:
4. SCSI controller wide negotiation:
5. SCSI controller transfer rate is too fast:
6. SCSI controller synchronous negotiation enabled:
7. Incorrect termination or bad cables:
8. Confirm that the tape drive is functioning properly:
9. General SCSI problems
10. Tape Drive / Tape Library Firmware issue.
Solution
The cyclic redundancy check (CRC) error is generic in nature and can be caused by numerous factors. Typically this means that a tape read/write error has occurred. This is usually caused by dirty read/write heads in the tape drive. Clean the tape drive and try the job again. If the problem persists, consider trying a different tape. Finally, the problem could be with cabling, termination or other hardware issue."
The following list contains the most common reasons for this error and potential ways to resolve the problem:
| CAUSE | POTENTIAL SOLUTION |
| 1. Contaminated read/write heads of the tape device: | Check with the hardware manufacturer for proper cleaning techniques. |
| 2. Bad media as there may be hard read/write errors : | Replace the media. Try a new tape that is certified by the hardware manufacturer. For more information about "soft" and "hard" write errors ,Please click on the link http://www.symantec.com/docs/TECH7363 . |
| 3. Tape driver: | Load the appropriate Backup Exec tape driver. The latest Backup Exec tape drivers can be downloaded from the Symantec Technical Support Web site at http://www.symantec.com/business/support/downloads.jsp?pid=15047 . . |
| 4. SCSI controller wide negotiation: | If the device is a wide (68 pin) SCSI device, then wide negotiation may and should be used. If the device is a narrow (50 pin) SCSI device, disable wide negotiation. Use the manufacturer's SCSI setup program to disable wide negotiation on the SCSI controller card. |
| 5. SCSI controller transfer rate is too fast: | Use the manufacturer's SCSI setup program to lower the SCSI transfer rate. Check with the controller and backup device manufacturer for the proper configuration for SCSI transfer rate. |
| 6. SCSI controller synchronous negotiation enabled: | Use the manufacturer's SCSI setup program to disable synchronous negotiation on the SCSI controller card. Check with the controller and backup device manufacturer for the proper configuration for SCSI synchronous negotiation. |
| 7. Incorrect termination or bad cables: | Verify that the SCSI cable is good and is configured to provide proper SCSI termination. Do not mix passive and active termination. |
| 8. Confirm that the tape drive is functioning properly: | Check with the tape drive manufacturer for diagnostic software to test the condition of the tape drive hardware. |
| 9. General SCSI problems: | Isolate the tape drive on its own controller card. |
| 10. Tape Drive / Tape Library Firmware issue | Upgrade the firmware of Tape Drive / Tape Library and power cycle the device.For more information, refer to Microsoft Article ID: Q154690 (http://support.microsoft.com/) |
If it occurs on deduplication storage: Confirm that the dedup folder is not running out of space on the volume where it resides. If this is the case, attempt to follow the instructions found in these two technotes:
Backup Exec's proactive reclamation of space on an OST device - http://www.symantec.com/docs/TECH145157
Reclaiming space in a Backup Exec Deduplication Folder - http://www.symantec.com/docs/TECH130103
NOTE: In Backup Exec 9.x and onwards the following errors may also get reported in the job log and job history.Job LogFinal Error Code: 00000017 HEX
Final Error Description: "Data error (cyclic redundancy check)"
Final Error Category: Other Errors
- Error Text In Job Log:
"Storage device "%Device%" reported an error on a request to write data to media. Error reported: Data error (cyclic redundancy check)."
No error reported in job log. It is possible that no error is reported in the job log other than the "Final Error."
Job HistoryError code: 17 HEX
Error description: "Data error (cyclic redundancy check)."
OR Job LogFinal Error Code: a00084f9 HEX
Final Error Description: "A communications failure has occurred between the Backup Exec job engine and the remote agent."
Final Error Category: Resource Errors
- Error Text In Job Log:
"Storage device "%Device%" reported an error on a request to write data to media. Error reported: Data error (cyclic redundancy check)."
Job Log
Final error: 0xe00084c7 - The media is bad.
Final error category: "Backup Media Errors"
OR
- Job Log
Final error: 0xe00084c7 - A tape read/write error has occurred. This is usually caused by dirty read/write heads in the tape drive. Clean the tape drive, and then try the job again. If the problem persists, try a different tape. You may also need to check for problems with cables, termination, or other hardware issues.
Final error category: "Backup Media Errors".
|
|
| Source | Error Code |
| Value | 00000017 HEX |
| Description | Data error (cyclic redundancy check)
|
| Source | UMI |
| Value | V-79-57344-34028 |
| Description | Error reading/writing data from/to the media. |
| Source | Error Code |
| Value | 0xa00084ec |
| Description | Error reading/writing data from/to the media. |
| Source | Error Code |
| Value | 0xa000e006 |
| Description | The Storage device reported a CRC error on a request to read/write data to/from media. |
| Source | Error Code |
| Value | 0x17 |
| Description | Data error (cyclic redundancy check). |
| Source | Error Code |
| Value | 0xe00084c7 |
| Description | The media is bad |
| Source | Error Code |
| Value | 0xe00084ec |
| Description | Error reading/writing data from/to the media |
| Source | UMI |
| Value | V-276-16 |
| Description | Critical - The tape is damaged or the drive is faulty. Call the tape supplier helpline. |
| Source | UMI |
| Value | V-79-57344-33991 |
| Description | Storage device "Drive reported an error on a request to read data from media. Error reported: 0x17. |
| Source | UMI |
| Value | V-79-57344-33991 |
| Description | An error occurred reading / writing of backup storage. |
Related Articles
Legacy ID
192216
Article URL http://www.symantec.com/docs/TECH5433
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