SUMMARY : 4mm Sony drive entry for Solaris2.2

Date: Fri Sep 02 1994 - 03:27:41 CDT

My orignal question was

> >
> > Does any one out there know the proper entry in the file
> > /kernel/drv/st.conf that will allow the 4mm SONY SDT-2000 tape drive to
> > work with Solaris 2.2. ?
> >
> > How these magic numbers work ? and what are they ?
> >
> > I will summarise
> >
> >
> >

I received 2 replies

One (Chuck Foley) said that

" I believe the st.conf feature of allowing "customer" definitions started
 with Solaris 2.3."

and the other (Paulo Licio de Geus) said he had no problem in using WangDAT
4mm tape drive under Solaris 2.2 and 2.3 without any change to the
configuration. He uses the drive as /dev/rmt/0cn for data compression all the

The Sony 4mm drive I am using is hooked to the Sparc 2 running Solaris2.2.
It does work but at a very slow speed.

So I upgrade to Harware 5/94 Solaris 2.3 with Maintenance Supplement 1 as
suggested by Chuck Foley and modify the /kernel/drv/st.conf as
name="st" class="scsi"
          tape-config-list =
   "SONY SDT-200", "SONY 4mm DAT", "magic-data"
          magic-data = 1,0x34,1024,0x1639,4,0,0x8c,0x8c,0x8c,3;

Reboot the machine with boot -r

Test the drive with
        tar cvf /dev/rmt/1l test.file
it comes up with
      st4: Fixed record length (512 bytes/block)

and it is still very slow (300KB in 3 minutes or 3MB in 30 minutes).

So something is still wrong. According to the Sony manual, it is
compatible with the HP 4mm DAT drive. If someone has the right entry for
the HP or the Sony, I would appreciate it.

Thanks to
Chuck Foley
Paulo Licio de Geus

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