| Event Id | 9 |
| Source | ql2300 |
| Description | This information from some newsgroups may help you: ------------------------------------------------------------------------------ A SCSI bus timeout occurs when either the SCSI controller or the SCSI device detects that a command has not been responded to within a specific timeout period. Normally, commands are issued by the SCSI controller, which then waits for a response from the device being addressed. If no response is detected, the controller may reset the bus to reinitiate communication. While disk drives normally recover well from SCSI bus timeouts and resets, tape drives have much greater difficulty in doing so. To try to detect problems such as these, the architects of the SCSI bus, and Backup Exec (tm) programmers have defined time limits for possible operations being performed by tape drives attached to the SCSI bus. Normally, these timeout values are large enough to accommodate any delay, including retries, in executing the specific command being attempted. In the event that the device does not respond in the amount of time indicated by the timeout value, a timeout occurs. Usually, the first indication of a timeout is that the tape drive ceases activity. However, because some operations can take several hours on some tape drives, some timeout values are very long, which can make it seem as if the program itself has stopped responding, or that there is an application error of some kind. |
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