[comp.unix.sysv386] SCSI tape under ISC 2.2?

rob@xyzoom.info.com (Rob Lingelbach) (11/24/90)

I want to add tape backup capability to ISC 2.2, and in the "supported
devices" documentation I only find mention of what looks like non-SCSI
tape drives e.g. Wangtek 5150ES, requiring the "PC-36" or "PC-36II"
controller.  
Is anyone using SCSI tape under ISC 2.2?



Rob Lingelbach rob@xyzoom.info.com -or- {well-connected}!uunet!xyzoom!rob
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cpcahil@virtech.uucp (Conor P. Cahill) (11/26/90)

In article <148@xyzoom.UUCP> rob@xyzoom.info.com (Rob Lingelbach) writes:
>Is anyone using SCSI tape under ISC 2.2?

Yes.  Just plug the tape drive into the system, configure the HPDD and
voila you have a tape drive.  You might have to create entries for the
tape devices but this is well documented in the Maintenance Procedures 
manual (section 7.1.7.2). 

As a second note, I have used several tape drives that are not in the
list with no problems (just configured them as a generic scsi tape 
drive).


-- 
Conor P. Cahill            (703)430-9247        Virtual Technologies, Inc.,
uunet!virtech!cpcahil                           46030 Manekin Plaza, Suite 160
                                                Sterling, VA 22170 

larry@nstar.rn.com (Larry Snyder) (11/30/90)

cpcahil@virtech.uucp (Conor P. Cahill) writes:

>Yes.  Just plug the tape drive into the system, configure the HPDD and
>voila you have a tape drive.  You might have to create entries for the
>tape devices but this is well documented in the Maintenance Procedures 
>manual (section 7.1.7.2). 

>As a second note, I have used several tape drives that are not in the
>list with no problems (just configured them as a generic scsi tape 
>drive).

Have you noticed any differences in throughput when reading/writing
to the various tape drives?

-- 
       Larry Snyder, Northern Star Communications, Notre Dame, IN USA 
 {larry@nstar, {uunet|backbone}!nstar!larry, larry%nstar@iuvax.cs.indiana.edu}
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cpcahil@virtech.uucp (Conor P. Cahill) (12/03/90)

In article <1990Nov29.202402.4322@nstar.rn.com> larry@nstar.rn.com (Larry Snyder) writes:
>Have you noticed any differences in throughput when reading/writing
>to the various tape drives?

All of the cartridge tapes that I have tried run in the 3 to 5 MB per minute
range.  I have tried 60MB, 150, and 320s by several manufacturers with several
different interfaces (adaptec scsi, bustek scsi, bustek eisa scsi, etc) and
have seen no significant differences in performance.

One tape drive that repeated attained throughput in the range of 12 to 15 MB
per minute was a 9 track 6250 drive. (Yes this was on the same system where
the cartridge tapes are only acheiving 3 to 5 MB per minute)

-- 
Conor P. Cahill            (703)430-9247        Virtual Technologies, Inc.,
uunet!virtech!cpcahil                           46030 Manekin Plaza, Suite 160
                                                Sterling, VA 22170