HP LTO 3 drive in guest vm: media write protected

We have a Proliant ML350 with a HP LTO 3 tape drive for backups.

On the machine is vmware esxi 3.5 installed. One of the guest os'es, a windows 2003 sbs, is using the tapedrive.

When the backup starts in the vm, it fails with the message:
Library Hewlett Packard LTO Ultrium-3 drive failed to write a Free media label on media <NAMETAPE> (10/02/2009 22:45 Seq 132) because the media is write protected.

We have only dedicated the tapedrive to the sbs guest machine.


If we try other tapes, always the same message.
techneitsolutionsAsked:
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nappy_dConnect With a Mentor There are a 1000 ways to skin the technology cat.Commented:
Do you have a server that is not viertualized? COnnect the drive outside of the VM environment and test.  Also, download the HP LTT it is a diagnostic utility for HP Tape drives.

I would connect it to that machine and run your backups.  It would not be a best practice (for me) to run backups from inside the VM.  If you have VC(VIrtual Center) and VCB(Virtual Center Backup) this is the way I do my VM Backups.
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markzzConnect With a Mentor Commented:
Although direct SCSI connected devices is supported it doesn't work very well.
I would also suggest you remove the LTO from the ML350 and move it to a physical server where I'd use an agent to backup your SBS server, VCB is you can or at least invest in vRanger..
If you don't have a second server look for a cheap DL380g1, you can pick them up for nothing, it would service this requirement nicely.
Also HP have released a number of firmware updates for their tape drives of late. It may be worth checking you are running a current LTO3 firmware.
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nappy_dThere are a 1000 ways to skin the technology cat.Commented:
this is what I have suggested to the author
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markzzCommented:
Well then Nappy d you have confirmation that you are a clever fellow.
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nappy_dThere are a 1000 ways to skin the technology cat.Commented:
sometimes I have a moment :) sometimes and very rarely...like once a year and this was it :)
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