Hello,
This is a generic hardware error. Please refer to following technote.
Title:
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 Backup Exec 7.x, 8.x, 9.x, or 10.0 when attempting any media operation.
http://support.veritas.com/docs/191694
- Additionally you may update the firmware of the drive as well.
For additional information, refer the following technote.
Title:
How to troubleshoot issues with a Robotic Library or Tape Drive in Backup Exec 9.x and 10.0
http://support.veritas.com/docs/255501
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