Path: utzoo!mnetor!uunet!lll-winken!lll-lcc!ames!pasteur!agate!ig!uwmcsd1!dogie!uwvax!geowhiz!uwspan!root
From: root@uwspan.UUCP (John Plocher)
Newsgroups: comp.sys.ibm.pc
Subject: Re: RLL on a ST-225
Message-ID: <1893@uwspan.UUCP>
Date: 1 Mar 88 22:03:02 GMT
References: <5037@dhw68k.cts.com> <16800212@clio> <1017@neoucom.UUCP>
Reply-To: root@uwspan.UUCP (John Plocher)
Followup-To: comp.sys.ibm.pc
Organization: U of Wisconsin - Madison  Spanish Department
Lines: 46

+---- Bill Mayhew writes
| +---- berger@clio.las.uiuc.edu writes:
| | Most drives intended for MFM work fine with RLL.  Seagate is one of the
| | only manufacturers to advise against it,...
| +----
| 
| The makers of RLL controller cards are also pretty cagey about
| naming drives that will work with their cards too.
+----

[This is NOT an ad - even though I quote from the one on page 258 of the
 March 1988 BYTE ]

A company called Perstor has a controller that uses 34 SPT (instead
of 17 or 26) and "Our competitors offer only a 50% increase in
capacity with their controllers, while we have advanced the RLL
standard to allow for a 90% or 100% increase in capacity."

They also say "While other RLL controllers require drives approved
for RLL encoding, the Perstor 200 series controllers allow you to
upgrade current hard disk systems or create new systems with
standard MFM drives or approved RLL drives."

"If performance is the issue, the Perstor controllers are the
answer, delivering up to a 110% increase in your data transfer
performance."

The design allows for TWO cards to be installed in one system -
each card controls 2 floppies and 2 hard disks.

Cost is less than $350.  8 bit card avail now, 16 bit in April.



Anyone ever use one?  Their engineer/support guy seemed to be OK, he
knew about stuff - he said they do all disk interfacing within the design
window for MFM drives and that they DO NOT require plated media...

It almost sounds too good to be true - our Maxtor 2190's will format out to
295Mb EACH!  Wow!

Someone pinch me, please!

  -John

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