We have to Linux media servers talking to a linux master. While they're
using an ADIC Pathlight VTL (FC connected with QLogic 23xx cards), to
the linux box it still tastes just like a scsi tape drive.

I want to think we used either the IBM tape drivers (an RPM was
available for SUSE on IBM's site), or left it to the standard linux
kernel with /dev/sg<x> and /dev/st<x> for the devices.

<does a rpm -qa and some grepping>

No drivers, just standard linux kernel. 

Something I did have to do with SLES9 is to make sure the QLogic and
Adaptec cards were loaded in the initrd, so the device ordering would be
consistent when the box needed to get rebooted. We had a condition where
the device addresses (/dev/st#) would move to different numbers on a
system restart. Putting the drivers in the initrd fixed that and they
load in the correct order every time.

And, fwiw, we are (soon) getting ready to replace our scsi attached
Scalar 100 with a fiber attached Scalar i500. So I might be able to
shuffle some things to test out the FC vs SCSI attached drives if
there's a difference. But, I thought the Linux kernel treats FC and SCSI
the same way as far as system-to-device interaction goes.

hth,

~ Robin

On Wed, 2006-10-25 at 16:20 +0000, "Len Boyle" wrote:
> Jason, 
>  
> We have downloaded ibm tape drivers for hp/ux from the url:
>  
> http://www-1.ibm.com/support/dlsearch.wss?rs=546&tc=STCVQ6Z&dc=D430
>  
> For solaris 9 we are using the sun drivers for ibm LTO3 tape drives
> with qlogic cards.  
>  
> len

> 
> We're testing a Linux media server now to try and resolve some NDMP
> issues.  I have the Media server set up, talking to my Master, fiber
> connectivity to a tape drive (properly zoned), but I can't find
> drivers.  I've contacted ADIC support, but they've been no help.  I've
> found IBM drivers (library contains IBM LTO3s), but they don't work
> for fibre attached, just SCSI.  The fibre attached drivers link to
> Emulex, but we have QLogic cards.
>  
> Now, I'm about at the end of my rope.  Any suggestions?  Contact
> Veritas support?  My last hope is to wait on my ADIC Sales Rep's
> Engineer.
>  
> Thanks,
> Jason