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From: mobo@sphinx.uchicago.edu (Samuel Wilson)
Newsgroups: comp.sys.att
Subject: interleave/cluster size on 6300 w/ 3.2
Message-ID: <2310@sphinx.uchicago.edu>
Date: Sat, 26-Sep-87 12:02:32 EDT
Article-I.D.: sphinx.2310
Posted: Sat Sep 26 12:02:32 1987
Date-Received: Sun, 27-Sep-87 10:53:05 EDT
Reply-To: mobo@sphinx.uchicago.edu (Samuel Wilson)
Distribution: world
Organization: U Chicago Computation Center
Lines: 28

I know that this has come up before, but before I trashed my hard
disk completely, I thought I would ask some advice.  I have a
6300 (with a V30) with a 20 meg HD.  The disk and controller came
in a box that says EVEREX, but it looks like a Western Digital
WX2 controller and a Seagate 225 drive.  I am using ATT's version
of MS-DOS 3.2.

For some reason, this is the slowest setup I have ever seen. The
CORE disk performance test gives it a performance rating of .735
with an average seek time of 93.6 ms.  I also use applications
with lots of very small files, and want to try a sector size
smaller than the present 8K.  I am going to do some experimenting
with different interleaves and sector sizes, but have a couple
questions.  1) does anyone have any suggestions about which
interleaves to try first, and 2) how do you change the sector
size with this combination of machine/DOS/controller/drive?

If it is of any use, here is what the beginning of the current
boot record looks like.

EB429050 53412031 2E303400 02100100 0200043B A2F80800
11000400 11000000 000000CF 02250209 2AFF50F6 19040D0A
424F4F54 2076312E 30342000 20627920 53475300 33C08ED0 ...

thanks,

Samuel Wilson         ..ihnp4!gargoyle!sphinx!mobo
                            FOTMOBO@UCHMVS1.Bitnet
University of Chicago, Division of Social Sciences