A few days ago my backups have been failing after only 8GB they are usually 595GB. It varies doesn't always fail on 8gb but has not gone over 24gb, fails on 16gb sometimes mostly 8gb though with error E00084ee - invalid command was sent to the storage device. I have looked up the error and the causes are 1. Possible communication issues between the Drive and the SCSI/IDE controller which is evident due to the presence of Event ID 7, 9,11 or 15 Event Log errors. There are none of those errors in the event log.
2. The tape drive/Library is connected to a RAID controller. Which it isn't.
This is an almost brand new tape drive, scsi card and tapes (less than a month old)
Any help would be appreciated.