SUMMARY: Connecting QUALSTAR tape drive to Sparc 2

From: Bambang Sugiantoro (
Date: Thu Sep 15 1994 - 03:36:20 CDT

Hi Sun-Managers,

My previous question was:

>I have QUALSTAR 3410 1/2" REEL tape drive ex. Mac without manual that need
>to be connected to SUN SS2. I tried to connect it and modify the
>/sys/scsi/target/st_conf.c to make an entry for this QUALSTAR. Because I
>don't know the command/configuration for this QUALSTAR 3410 so I copy from
>KENEDY/HP entry and rename it to QUALSTAR. But it's seem not working.
>I would appreciate any suggestion/info/configuration for this QUALSTAR 3410
>especialy if I could get brief/short manual for this QUALSTAR.

I edit the /sys/scsi/targets/st_conf.c to add an entry:

/* QUALSTAR 1/2" reel */
        "Qualstar 1/2\" Reel", 4, "QUALSTAR", ST_TYPE_KENNEDY, 10240,
        400, 400,
        { 0x01, 0x02, 0x03, 0x03 },
        { 0, 0, 0, 0 }

This entry I copied from Kenedy entry and make some modification.

When the system is booting watch the message

  st0 at esp0 target 4 lun 0
  st0: <Qualstar 1/2" Reel>

that mean the aditional entry is correct.

I only tried writing on /dev/rst0 (800 bpi) and always give error writing....
Until at last I tried reading/writing on /dev/rst8 (1600 bpi) and
/dev/rst16, it work fine.

According to Kevin W. Thomas that have the manual for this QUALSTAR drive:
>>The Qualstar drives can *not* write 800 bpi tapes. The drive can *read*
>>800 bpi tapes. Actually, some of the drives can read/write at 3200 bpi, but
>>not on a UNIX workstation. I've never heard of 3200.

So its clear now that I have not been able to "tar cvf /dev/rst0 . " not
wrong in the st_conf.c or in the Qualstar setup.

Thanks to:

- Kevin W. Thomas,
         National Severe Storms Laboratory, Norman-Oklahoma
- Kevin A. Noll,,
         Coleman Research Corporation, Orlando-FL

best regards,

Bambang Sugiantoro
Schlumberger GeoQuest
Mulia Center 17th Floor
jl. H.R. Rasuna Said Kav X-6 no 8

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