I received the following information:
---- begin icnluded files ---
>From fabrice@pure.com Mon Nov 9 21:20:17 1992
disk_type = "Seagate WREN VIII ST41650N" \
: ctlr = MD21 \
: trks_zone = 15 : asect = 3 \
: ncyl = 2069 : acyl = 2 : pcyl = 2071 : nhead = 15 : nsect = 88 \
: rpm = 3600 : bpt = 45568
-- ,
>From hoel@cec.mtu.edu Mon Nov 9 22:20:17 1992
disk_type = "CDC Wren VIII ST41650N, 1.65GByte" \
: ctlr = SCSI : fmt_time = 4 \
: cache = 0xd4 : trks_zone = 1 : asect = 0 \
: ncyl = 2105 : acyl = 2 : pcyl = 2107 : nhead = 15 : nsect = 88 \
: rpm = 3600 : bpt = 41301
This yields 2105*15*88 = 2,778,600 / 512 byte blocks = 1.4226 GBytes
before newfs writes out the I-nodes.
>From markb@Solbourne.COM Mon Nov 9 22:30:12 1992
disk_type = "Seagate ST41659 Wren8" \
: ctlr = SCSI \
: ncyl = 2080 : acyl = 2 : pcyl = 2107 : nhead = 15 : nsect = 89 \
: rpm = 3600 : bpt = 20833 \
: cache = 0x11 : nzone = 2 : trks_zone = 15 : asect = 8 : atrks = 30
partition = "Seagate ST41659 Wren8" \
: disk = "Seagate ST41659 Wren8" : ctlr = SCSI \
: a = 0, 17355 : b = 13, 130830 : c = 0, 2636625 : d = 111, 20025 \
: g = 126, 2468415
>From dingbaum@hep.net Tue Nov 10 16:52:11 1992
Hi,
I setup a Wren8 ST41650N last week. I don't know how the S differs from the N, but
maybe this will help. One number you should be aware of is the 87 sectors per track.
I talked to a technician at Seagate and he said that they use "zone bit recording".
That is, the number of sectors per track increases as you go from the inside of
the disk to the outside. 87 sectors per track is an average and should be used in
your format.dat entry. I have been using this disk for about a week with good
results.
disk_type = "SEAGATE Wren VIII ST41650N" \
: ctlr = MD21 : fmt_time = 5 \
: cache = 0xd4 : trks_zone = 15 : asect = 5 : atrks = 30 \
: ncyl = 2105 : acyl = 2 : pcyl = 2107 : nhead = 15 : nsect = 87 \
: rpm = 3600 : bpt = 41301
---- end of included file ----
I went with the last one because it was closest to the Info I already had
and I wanted to follow the remarks on the 87 sectors given therein;
using this format.dat the disk formatted OK and is in use since without
any problems.
Many thanks to the respondents!
Wolfgang Wetz, Systems Manager
*** CIBA-GEIGY AG, R-1045.P.24, P.O.Box, CH-4002 Basel, Switzerland ***
E-mail: wwtz@ciba-geigy.ch - Phone: +4161 697 54 25 - Fax: +4161 697 87 72
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