This error is generally a hardware related issue and the technote below provides information on the same Storage device "device" reported an error on a request to read/write data to/from media.
http://seer.support.veritas.com/docs/192216.htm
The following are the recommended solutions for this problem.
. This error indicates that either there is a hardware configuration or bad hardware issue.
Can we ask you to refer the following technotes:
- The error message "Error on a request to space to end of data. The request could not be performed because of an I/O error" is reported in VERITAS Backup Exec (tm) 7.x, 8.x or 9.x when attempting any media operation.
http://seer.support.veritas.com/docs/191694.htm
- Device I/O error occurs during the verify portion of a backup operation with VERITAS Backup Exec (tm)
http://seer.support.veritas.com/docs/191087.htm
Note: Please refer to the related documents section too. Mentioned technotes are also valid for Backup Exec 9.0.
Also refer to the following technote:
Title: Advanced Open File Option backups fail because of an I/O device error.
URL: http://support.veritas.com/docs/268416
Refer to the following points to resolve the problem.
1. This can be a SCSI time out issue. Refer to the following
How to resolve SCSI bus timeouts
http://support.veritas.com/docs/191158
2. We would also suggest you to update the SCSI firmware.For this, contact your hardware Vendor.
3. Update the latest veritas drivers
VERITAS Backup Exec (tm) 9.1 - Device Driver Installer (20041101) - Includes Tape Driver Release (20041006) and Robotic Library Release (44) (Intel Only)
http://seer.support.veritas.com/docs/272474.htm