Path: utzoo!attcan!uunet!samsung!zaphod.mps.ohio-state.edu!mips!pacbell.com!pacbell!att!mcdchg!laidbak!obdient!vpnet!cgordon
From: cgordon@vpnet.chi.il.us (Gordon Hlavenka)
Newsgroups: sci.electronics
Subject: Remember? I have some ST-506's!
Message-ID: <26877b8f-282.2sci.electronics-1@vpnet.chi.il.us>
Date: 26 Jun 90 17:55:04 GMT
References: <15505@s.ms.uky.edu> <10984@netcom.UUCP>
Lines: 29


>And, I suppose if I really expect to use the drive, I need to know the
>total number of cylinders, heads, starting reduced write current and 
>write precomp cylinder.  Anyone have a chart of Seagate drive specs, or
>know where I could call or write to get this data?

I believe the 506 was a 5-meg unit.  I don't have the book on it, but I do
have the books on the 600 series and the 700 series.  Best I can do is give
you specs for those, and maybe it will help.  I think they will be similar;
just the environmentals change and the 700-series is half height. (???!)

Model      Unformatted       Formatted      Cyl   heads  Precomp   Reduce Wr
SA602         3.33 MB         2.70 MB       160     2     128        ---
SA604         6.66 MB         5.40 MB       160     4     128        ---
SA606         10.0 MB         8.11 MB       160     6     128        ---

SA706         6.40 MB         5.00 MB       320     2     128        Auto
SA712         12.7 MB         10.3 MB       320     4     128        Auto

I would guess that the SA604 might be similar to the 506...

The 700 series is RLL-capable and actually has 350 usable cylinders.  I've
had 2 712s running for 3 years now on a 2,7 RLL controller using 350
cylinders.  This yields 18MB and change.  I've had no trouble with them.

According to the book, the 600 series has 180 usable cylinders (based on a
ship zone at 182).  I don't know about RLL on the 600s...
----------------------------------------------------------
Gordon S. Hlavenka                 cgordon@vpnet.chi.il.us
Disclaimer: He's lying