Hello,
Please refer to the following technotes to resolve this issue :
The error message: "The volume cannot be snapped using Advanced Open File Option (AOFO) because it is a read-only drive. Make sure that the drive is writeable and run the job again." (e0008539 HEX) occurs when running a backup using the VERITAS Advanced Open File Option. ]
http://support.veritas.com/docs/273391
http://support.veritas.com/docs/256078
Thank You,
Shweta