Document ID: 240775
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Backup operations using a Hewlett-Packard C1533 Digital Audio Tape drive result in the backup process terminating abruptly. The System Event Viewer Log will report Event ID 9 for SCSI bus time-outs.
Exact Error Message
The device, \Device\Scsi\aic78xx1, did not respond within the timeout period.
Event ID 9 Source is "Error"

Details:
The error (Figure 1) may occur if the Hewlett-Packard (HP) C1533 Digital Audio Tape (DAT) drive is connected to a very fast controller, such as an Adaptec 2940 ultra-wide (UW) controller.

Figure 1
 

The HP C1533 DAT drive requires the use of a controller with 5-MHz throughput. The Adaptec 2940 UW controller provides 10-MHz or 20-MHz throughput. To resolve this issue, connect the tape drive to a controller that provides 5-MHz throughput.

Note: Improper SCSI termination may also cause this behavior.  

Acknowledgements
Microsoft Knowledge Base: Article ID: Q154690 and Q211214
Products Applied:
 Backup Exec for Windows Servers 7.3, 7.3 SBS, 8.0, 8.5, 8.5 SBS, 8.6, 8.6 SBS, 8.6 for WSA, 9.0
Last Updated: June 18 2003 09:29 AM GMT
Expires on: 365 days from publish date
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Subjects:
 Backup Exec for Windows Servers
   Equipment: Compatibility, Device Management

Languages:
 English (US)

Operating Systems:
Windows 2000

Advanced Server, Datacenter Server, Professional, Server

Windows NT

4.0 Server

Windows NT Small Business Server

2000, 4.5