Document ID: 280011
http://support.veritas.com/docs/280011
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Backups fail with "Error reported: The request could not be performed because of an I/O device error"

Exact Error Message
Storage device has reported an error on a request to read data from media.
Error reported: The request could not be performed because of an I/O device error.


Details:

In almost all cases, these messages are being posted due to hardware problems with either the controller or, more likely, a device that is attached to the controller in question. The hardware problems can be associated with poor cabling, incorrect termination or transfer rate settings, lazy or slow device responses to relinquish the SCSI bus, a faulty device, or, in very rare cases, a poorly written device driver.

Resolution:

Please refer to Microsoft article given below:
How to troubleshoot Event ID 9,11 & 15

General Recommendations:
1. Make sure the latest Symantec device drivers are installed.
2. Perform tests after stopping the Removable Storage Management (RSM) service.
3. If the drive is connected to a SCSI RAID card, move the drive off to a separate SCSI card.




Supplemental Material:

System: Ref.#Description
UMI: V-79-57344-33992 The backup storage device has failed
Event ID: 9 , 11 & 15 The device, \Device\ScsiPort0, did not respond within the timeout period


Products Applied:
 Backup Exec 10.0, 10d (10.1), 11d (11.0), 12.0, 12.5

Last Updated: November 12 2009 04:00 PM GMT
Expires on: 11-12-2010
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Subjects:
 Backup Exec
   Device Management: Troubleshoot

Languages:
 English (US)

Operating Systems:
Windows 2000

Advanced Server, Server

Windows Server 2003

Enterprise Server, Standard Server

Windows Small Business Server 2003

Premium Edition, Standard Edition

Windows Server 2008

Enterprise (x64-64bit), Enterprise (x86-32bit), Standard (x64-64bit), Standard (x86-32bit)

Windows Small Business Server 2008

Premium Edition, Standard Edition