Date   : Sat, 06 Jan 2007 09:46:16 +0000
From   : mike@... (Mike Tomlinson)
Subject: Technomatic hard disk units

In article <14ED7E9C5ABD43ED8F4CD9FA84154E11.MAI@...>, Ian
Wolstenholme <BBCMailingList@...> writes

>According to the Adaptec manual, the ACB4070 is an RLL
>controller and not an MFM-and-RLL controller (that's my
>understanding of it anyway, but I could be wrong since
>it does appear to run contrary to popular belief) so I'm not
>sure how wise is it to run it with an MFM drive.

It's not.  The ST225 is unsuitable for RLL encoding.  That's why you get
errors verifying the drive; you're storing 50% more data on it than it
was designed for.

Looking at your photos, that little lot must get awfully hot crammed
into the box like that.  If I were you, I'd be looking for an RLL-
capable 3.5" drive in a 3.5"-to-5.25" adapter (one with ventilation
grilles on the front) to replace the ST225.

-- 
(\__/)
(='.'=) This is Bunny. Copy and paste Bunny into your
(")_(") signature to help him gain world domination.