Hello,
An error message: "When accessing a new tape of a multi-volume partition, the current block size is incorrect" is displayed when performing an erase media operation.
http://support.veritas.com/docs/190750
Incase the technote does not help,Check the even id and follow the information given below.
This error can also be due to hardware settings. Please refer to the MS article given below.
Cables: The first thing to check, when trouble shooting SCSI cabling, is the total length of each cable segment. Each implementation of SCSI has a different maximum recommended cable length. Exceeding the cable lengths specified for SE SCSI is ill advised.
How to Troubleshoot Event 9 and Event 11 Error Messages.
http://support.microsoft.com/default.aspx?scid=kb;en-us;154690
Thank You,
Shweta