SUMMARY: ST42400 format.dat entry

From: James Ashton (jaa101@deakin.anu.edu.au)
Date: Mon Nov 30 1992 - 22:51:02 CST


Thanks again to the list for prompt and accurate responses.

THE QUESTION

I've seen requests for this in the past but archive searches have
revealed no summaries.

My guess at this is:

disk_type = "Seagate ST42400N - Elite 2" \
        : ctlr = SCSI : fmt_time = 4 \
        : ncyl = 2624 : acyl = 3 : pcyl = 2627 : nhead = 19 : nsect = 83 \
        : rpm = 5400 : bpt = 42715

THE SUMMARY

I've received five responses giving possible entries. There were three
votes (from Doug, Joost and Bruce) for an entry which corresponds with
the disk geometry and which is close to my guess:

disk_type = "Seagate ST42400N" \
        : ctlr = MD21 : fmt_time = 4 \
        : trks_zone = 19 : asect = 6 : atrks = 19 \
        : ncyl = 2622 : acyl = 2 : pcyl = 2624 : nhead = 19 : nsect = 83 \
        : rpm = 5400 : bpt = 55440

One respondent (Birger) claimed that the drive is the one used by Sun
as their 2.1G drive implying the Sun supplied entry for those devices
was suitable. Another (Brian) relayed an entry from `engineers at
Seagate' which was identical to Sun's (except in name of course):

disk_type = "Seagate Elite ST42400N" \
        : ctlr = SCSI : fmt_time = 4 \
        : ncyl = 2733 : acyl = 2 : pcyl = 3500 : nhead = 19 : nsect = 80 \
        : rpm = 5400 : bpt = 44823

Using format with either entry seems to work fine although I've yet
to try either with busy file systems. The latter entry gives almost
another 10MB of available space so I'll go with it.

THE HONOUR

doug@perry.berkeley.edu. (Doug Neuhauser)
birger@vest.sdata.no. (Birger A. Wathne)
joost@cdi-as.ce.philips.nl. (Joost van Vroonhoven)
cogan@merlin.anu.edu.au. (Bruce Cogan)
Brian Bartholomew <bb@math.ufl.edu.>

______________________________________________________________________________
James Ashton System Administrator
                                             Department of Systems Engineering
Voice +61 6 249 0681 Research School of Physical Sciences and Engineering
FAX +61 6 249 2698 Australian National University
Email James.Ashton@syseng.anu.edu.au GPO Box 4 Canberra ACT 2601 Australia



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