[rescue] Re: Drive Reliability (was SCSI drive for sale atbuy.com)

Kay sunfriek at ussonet.net
Thu May 15 01:24:45 CDT 2003

i still have in my collection of stuff a ST-506 Seagate drive and a ST-412
drive as well...


> On Wednesday, May 14, 2003, at 08:15 PM, Jeffrey Nonken wrote:
> >> Well, if you ever go to dispose of any high capcity (100MB or higher)
> >> MFM drives... don't toss em... just e-mail me... depending on what
> >> you have, I'll pay the shiping to save it.
> >
> > I think my ESDI drive is 150 meg. The next larger, if I haven't tossed
> > it,
> > would be a Seagate ST4096. After that you get down around 35 meg and
> > lower.
> > I think the MR522 is about 20 meg. I'm pretty sure I've already tossed
> > my
> > ST412; last time I used it, it was showing signs of age.
>    If you still have an ST4096 and Curt isn't drooling over it, I'm
> definitely interested in it.
>    The ST412 would actually be a semi-decent historical preservation
> piece, though I'd probably opt for an ST-506.  The "MFM interface" is
> commonly referred to as the "ST-506 interface", although the actual
> ST-506 drive had some interface differences.  The ST-412 is actually
> the drive whose interface which the later crop of mainstream MFM drives
> was based on, so it would be more correctly called the "ST-412
> interface" which some people actually did call it.
>    Calling it "MFM" is a bad idea, even though the term came into common
> use.  The fact that the data was recorded using Modified Frequency
> Modulation has precisely jack squat to do with [most of] the interface,
> and indeed some other types of [non-ST-412-interfaced] drives used MFM
> recording methods.
>        -Dave
> --
> Dave McGuire                "They live deeply, these vagabonds."
> St. Petersburg, FL                            -Goro
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