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From: thompson@PAN.SSEC.HONEYWELL.COM (John Thompson)
Newsgroups: comp.sys.apollo
Subject: re: Exabytes on Series 400's
Message-ID: <9106241630.AA16316@pan.ssec.honeywell.com>
Date: 24 Jun 91 16:30:47 GMT
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> Third, 8200's and 8500's work under Domain/OS in many cases, but not on a
> Mentor node, and tar sometimes has i/o troubles that are bit-pattern specific
> that don't occur with wbak or rbak. 
> 
> "Not on a Mentor node" means that the
> node crashes immediately with status 440002, meaning "bad iova from os/dio
> bus manager" when using rbak, wbak and rwmt, but tar, cpio, mt, etc., all
> execute flawlessly, and netstat -c reports no tape drives while scsi_info
> reports a tape drive at SCSI ID 1.
> 
> Has anyone else seen this behavior? Any solutions? Any reason why HP has
> decided to support 8mm tape drives under HP-UX (or Unix in general) and
> not support the Domain/OS utilities?
At 10.1, you needed a PSK and patch (set of patches?) to get the SCSI 
devices going.  At 10.2 and beyond, these were included in the base O/S.
At 10.3, they seem to have added official support for a 3rd and 4th tape
drive (rmts8, 9, 10, 11 are all there now on our nodes, along with the
non-rewinding devices rmts12 .. rmts15).  They also added (at 10.3) 
support for the Domain utilities rbak and wbak.  The device is 'm' in this
case.  It takes a looonnnnggg time while it plays around (checking for a
real magtape device???), but then it works just fine here with a normal
10.3 load.

-- jt --
John Thompson
Honeywell, SSEC
Plymouth, MN  55441
thompson@pan.ssec.honeywell.com

Avoid the rush -- Procrastinate Now!