*BSD News Article 73545


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From: tedm@agora.rdrop.com
Newsgroups: comp.unix.bsd.freebsd.misc
Subject: Re: Tape drive suggestions???
Date: 13 Jul 1996 07:11:18 GMT
Organization: Symantec Corporation
Lines: 62
Message-ID: <4s7i6m$j0t@symiserver2.symantec.com>
References: <4ru18i$mll@mitzi.rsmas.miami.edu> <4s13f4$avo@uriah.heep.sax.de>
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In <4s13f4$avo@uriah.heep.sax.de>, j@uriah.heep.sax.de (J Wunsch) writes:

[deleted]

>If you don't have much money to spend, try to get some used stuff.  An
>old Archive Viper 150 should not be very expensive these days, but is
>rock-solid technology which will most likely run flawlessly yet
>another five years.  This drive (and the Wangtek ES5150) is available
>as either SCSI, or with a separate QIC-02 interface card.  While the

Actually, the model numbers are:

5150ES   is the SCSI version
5150EQ  is the QIC-02 version
5150EN is the QIC-36 version

I have both of these drives in different machines and in my opinion they are the
greatest tapedrives ever produced.  The things are cheap and plentiful as
they were used in ancient, hoary mini computers that are being broken up for
scrap these days, and virtually indestructible.  And, talk about indestructible
the tape cartridges themselves can be thrown off a bridge and still work
reliably.

One caveat is you want to get the FaxBack document from Rexon I believe
is who owns both Archive and Wangtek these days and familiarize yourself with
the different PC board revisions on the drives themselves.  The older 5150's
didn't support QFA which can be painful if your attempting to retrieve ONE
file near the end of the tape.  They will still work great, though, and if you find
a stack of drives for a song grab and ask questions later.  Try to get
the SCSI version if possible, of course.

Be careful with QIC cards.  There are two kinds, a QIC-02, and a QIC-36 card.
Both work with the driver, but the 5150EQ won't work on a QIC-36 card and the
5150EN won't work with a QIC-02 card.  The drive connectors are identical,
unfortunately, so read the model numbers carefully.

Another problem I've found with the SCSI versions is that they really only like
SCSI-1, which means maximum of 5Mbts and asynchronous only.  So, use them
on a separate cheap controller (like a ST01, FDC 950, etc) or on a controller
that allows you to control the negotiation on a per-ID basis.

Media is easy to find, here we have surplus places that have barrels of the
QIC tapes for real cheap.

Another great thing with these is the heads, motors, and circuit boards are all
interchangeable between the ES, EN & EQ.  If you get a stack of these that
are "broken" you can probably assemble a working drive by mixing and matching
parts, that's how one of mine got together.

Another wonderful thing is that all these drives read each others tapes quite
well, you can TAR off a file with TAR for DOS, or TAR for OS/2 and read it
on a Unix system, etc.  In fact, I've even used TAR for DOS in a DOS window
under Win95 with a 5150ES and it worked great.  The ES, EN and EQ all read
each other's media.  In fact, most of the QIC drives (Tandberg, Archive, etc)
read each other's media very well.  This is in stark contract to those garbage
QIC-80 floppy-tape drives.

Don't be put off by the 250MB capacity limit, unless your developing kernel sources
of course, as not a lot in a Unix system is worth backing up, and 250MB is plenty
unless you have a ton of users on the machine.

Ted