ok, here is the background.
NT4 server with sp6
Freecom dat 40 (dds4) scsi internal drive (C5683A)
Tekram DC-390U2WE scsi card
This is the only scsi card & scsi device in the machine.
The driver for the card is loaded & shows under scsi adapters, the tape drive is installed, the driver running (4mm dat)
The backup is scheduled using the at scheduler, the backup starts, ntbackup starts collecting the data for the backup.
It gets to about 3hrs into the backup & then stops, ntbackup has the following message
"A tape device has been detected, and the tape driver started. However, the tape device is not responding. Check the tape device power is on & the cables are properly connected."
If you close the scripted job & ntbackup, the tape drive is no longer accessable & you cannot manually eject the tape.
I have tried HPs storageworks library & tape tools & it cannot diagnose the drive.
if you reboot the server, the scsi card no longer detects the tape drive.
If you power the server off & back on, the tape drive is then detected again by the scsi card & in windows aswell.
The scsi cable is terminated on the last device, the card auto detects & sets the speed to 40mb/s & i have left the card settings at default.
this is the manual for the card: ftp://ftp.tekram.com.cn/storage/SCSI/PCI/DC-390X/DC-390U2WE/Manual/DC-390U2WE_ManV101.pdf
Obviously my customer is very concerned that it has not been working for sometime now & I have ran out of things to check to see why this is not working.
The firmware on the devices are uptodate.
The tape drive worked for over a week aft er it had been installed & then just stopped
In the system log of the server the following event has appeared frequently
The description for Event ID (9) is source ( dc390u2x) could not be found. it contains the following insertion string(s): \device\scsiport2.
The the following day, for "hpdat" there is this event: The driver detected a controller error on \device\tape0
and yesterday an error has appeared for qic117 which has not been there before.
Is it a driver issue, hardware issue or something else?
If you need to know anything else, let me know...