On Wed, Jul 07, 2004 at 08:51:31PM +0200, Manuel Bouyer wrote:
> On Wed, Jul 07, 2004 at 03:58:54PM +0100, Patrick Welche wrote:
> > I just put together a box with:
> > 
> >   mpt0 at pci2 dev 3 function 0: LSI Logic 53c1030 Ultra320 SCSI
> > 
> > and two
> > 
> >   sd0 at scsibus1 target 0 lun 0: <FUJITSU, MAS3735NP, 5B08> disk fixed
> >   sd0: 70007 MB, 27094 cyl, 8 head, 661 sec, 512 bytes/sect x 143374650 sectors
> >   sd0: sync (6.25ns offset 127), 16-bit (320.000MB/s) transfers, tagged queueing
> > 
> > When I plugged the
> > 
> >   st0 at scsibus1 target 6 lun 0: <BNCHMARK, DLT1, 5032> tape removable
> > 
> > in, sd0 and sd1 disappeared. Tech support is claiming this is normal,
> > and that the tape has to be the only scsi device on the bus. I am
> > incredulous. What do you think?
> 
> What kind of interface is st0 ?
> The drive are LVD. It the tape drive is single-ended (which is what I would
> expect for a DLT1), the bus has switched to single-ended, but it's possible
> that the drives didn't notice. Usually drives have a jumper to
> force to single-ended, and I've got to use it in some conditions.

The tape drive is a "PowerVault 110T DLT VS80" According to the Dell spec
page:

http://www1.euro.dell.com/content/products/productdetails.aspx/
          pvaul_110tdlt1?c=uk&l=en&s=bsd&~tab=specstab

(why bsd? ;) )

Interface:
   2940 Ultra-2/Wide SCSI
   39160 Ultra-2/LVD SCSI SCSI

The documentation only mentions the 4 scsi id jumpers, not what the other 3
do:

  http://docs.us.dell.com/docs/stor-sys/2g536/en/setup.htm

if you can ever get past all the redirections and invalid cookies..

and explains that the tape drive may be plugged into a LVD or SE scsi bus.

The terminator is separate and on the end of the cable..


I now have it in another box, with no disks plugged in eg:

st0 at scsibus1 target 6 lun 0: <BNCHMARK, DLT1, 5032> tape removable
st0: drive empty
st0: sync (100.00ns offset 15), 16-bit (20.000MB/s) transfers
st0(mpt1:0:6:0): command timeout
st0: error 16 trying to rewind
st0: WARNING: cannot revert to default density
*reboot*
st0 at scsibus1 target 6 lun 0: <BNCHMARK, DLT1, 5032> tape removable
st0: drive empty
# mt status
SCSI tape drive, residual=0
ds=3<Mounted>
er=6<>
blocksize: 0 (0, 0, 0, 0)
density: 64 (0, 0, 0, 0)
current file number: 0
current block number: 0


Cheers,

Patrick