SUMMARY format.dat for ibm DPSS-309170

From: Dave Petersen (DaveP@larsondavis.com)
Date: Mon Nov 06 2000 - 17:17:16 CST


To reiterate, I needed the specs for an IBM DPSS-309170 for a SPARCstation5 running SunOS 4.1.4.

Stephen responded with the following:

The FAQ answer 5.1 tells you *exactly* what to do

Subject: 5.1) What is the format.dat entry for drive X?

The FAQ was posted to the list yesterday (and is done on a regular once
a month basis).
---------------------------------------

I had done all this but still did not have the correct data and IBM had not
yet responded and I wanted to wait for an official version before using scsiinfo.
However, I got tired of waiting. So, using scsiinfo data and the label on the
drive as it arrived, I came up with the following for the format.dat and it works fine.

disk_type = "IBM DPSS-309170" \
        : ctlr = SCSI : fmt_time = 18 \
        : trks_zone = 3989 : atrks = 0 : asect = 0 \
        : ncyl = 11894 : acyl = 2 : pcyl = 11896 : nhead = 3 : nsect = 502 \
        : rpm = 7200 : bpt = 188160

partition = "IBM-DPSS-309170" \
        : disk = "IBM DPSS-309170" : ctlr = SCSI \
        : a = 0, 3906564: b = 2594, 3906564 : c = 0, 17912364 \
        : d = 5188, 3906564 : e = 7782, 3906564 : f = 10376, 2286108

I finally received the IBM version but I think it is wrong as it specifies 4 heads and
all the literature, scsiinfo and the drive label itself specifies 3 heads. But if any doubt,
here is the IBM official version.

DPSS-309170 Ultrastar 36LP
9,173,114,880 Format Capacity (bytes)
512 User bytes/logical block
17,916,240 Logical blocks/drive
14,682 Cylinders (ncyl)
2 Alt (acyl)
14,684 Total (pcyl)
4 Heads (nhead)
305 Sectors (nsect)
7,200 RPM

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