Greetings, Sun-Managers.
I recently wrote requesting a format.dat entry for a HP97560-300 disk
(1.3 gigabytes formatted). I received several responses, and would like
to thank: bshaw@hc.ti.com (Bob Shaw)
trinkle@cs.purdue.edu (Daniel Trinkle)
schoelle@SCTC.COM (Dave Schoeller)
Dave Schoeller submitted a complete list of format.dat entries for perhaps
every current HP SCSI disk known to be in service. My final edition looked
almost identical to his given version, but I elected to use only the number
of data cylinders given in an HP technical brochure rather than the total
physical cylinders - 2.
Daniel Trinkle actually gave me an interesting bit of information in his
post that gave me the tools to complete my own final version before I
received Daniel's set. In the "analyze/setup" submenu of the format
program, there is a query to:
Enable extended messages [no]?
I had never used this before, but if enabled it gives extremely useful
information regarding any discrepancies between your format.dat entry
and the SCSI mode-pages that the drive reports just before actual
formatting begins. To effectively use this information, you may have
to actually format the drive several times in order to get the mode-page
information and the format.dat entry reconciled, since the info is ONLY
given after the "format" command is issued from within the format program.
The following is my working format.dat entry and the text
of the messages sent to my by the above mentioned contributors.
-=-=-=-=-=- format.dat entry for an HP97560-300 (1.6g unfmt, 1.3g fmtted)
The final edition:
disk_type = "HP97560-300 1.3G" \
: ctlr = MD21 : fmt_time = 4 \
: trks_zone = 12255 : asect = 0 : atrks = 490 \
: ncyl = 1935 : acyl = 27 : pcyl = 1962 : nhead = 19 : nsect = 71 \
: rpm = 4002 : bpt = 42840
partition = "HP97560-300 1.3G" \
: disk = "HP97560-300 1.3G" : ctlr = MD21 \
: a = 0, 62054 : b = 46, 62054 : c = 0, 2610315 \
: d = 0, 1304483 : e = 92, 1180375 : f = 967, 1305832 \
: g = 92, 2486207
-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
Rob Scott, System Administrator for the Marine Physical Laboratory
Scripps Institution of Oceanography, UC San Diego
Internet: zeke@mpl.ucsd.edu Telephonenet: (619) 534-8588
-=-=-=-=-=- Response from Bob Shaw (bshaw@hc.ti.com) -=-=-=-=-=-=-=-
Here is what I used a long time ago to evaluate one of these
beasts . The reason I used fmt_time = 11 was because it takes
so MUCH longer to finish than what the prompt says. I found
around 10-12 was a much closer approx of the time.
I would be interested in receiveing a summary of ALL of your
replies .
#____________________________________________________________________
disk_type = "HP 97560_bs" \
: ctlr = MD21 : fmt_time = 11\
: ncyl = 1933 : acyl = 2 : pcyl = 1935 : nhead = 19 : nsect = 71 \
: rpm = 4002 : bpt = 36864
partition = "HP 97560_bs" \
: disk = "HP 97560_bs" : ctlr = MD21 \
: a = 0, 1368 : b = 1, 318744 : c = 0, 2644344 : h = 234, 2324232
#------------------------------------------------------------------------
-=-=-=-=-=- Response from Daniel Trinkle (trinkle@cs.purdue.edu) -=-=-=-=-=-
I had the same warning from a HP 97556 drive I was formatting. I
went into the "analyze" section of format and turned on verbose
messages in the "setup" submenu before doing the format (I have access
to real documentation -- the source). The interesting part was that
the drive said it only had 71 sectors per track! After seeing what
format said the drive said it wanted, I came up with the following
format.dat entry for the 97556.
disk_type = "HP 97556" \
: ctlr = MD21 \
: trks_zone = 6116 : asect = 0 : atrks = 282 \
: ncyl = 1668 : acyl = 2 : pcyl = 1697 : nhead = 11 : nsect = 71 \
: rpm = 4002 : bpt = 42840
When I formated the drive using this entry, I got no errors at
all. Less data space, but better peace of mind. Note also the large
discrepancy between ncyl + acyl compared to pcyl. This is because the
HP drives actually have many more cylinders for internal use (spare
sectoring) than are available for user data. I am sure I could have
just as safely used pcyl = 1670.
According to the specs I have for the HP 97556/58/60 drive, there
should be 72 sectors per track. This is an HP doc, and I have no idea
why the controller/disk says differently. Everything else on the mode
select pages 3 and 4 seems to agree between the docs and the drive
except the "tracks per zone" value. Again, what the doc says (0x2FDF
= 12255) is not what the controller reports back (0x17E4 = 6116).
According to the doc it is supposed to be the same for all three
models of drive.
If I extrapolate these discrepancy to the 97560 drive, I would
suggest a format.dat entry of
disk_type = "HP 97560" \
: ctlr = MD21 \
: trks_zone = 6116 : asect = 0 : atrks = 490 \
: ncyl = 1933 : acyl = 2 : pcyl = 1962 : nhead = 19 : nsect = 71 \
: rpm = 4002 : bpt = 42840
-=-=-=-=-=- Response from Dave Schoeller (schoelle@sctc.com) -=-=-=-=-=-
Below is some information you might find useful.
disk_type = "HP C2233 234MB"\
: ctlr = MD21 : fmt_time = 3\
: trks_zone = 2220 : asect = 0 : atrks = 131 \
: ncyl = 1289 : acyl = 2 : pcyl = 1574 : nhead = 5 : nsect = 71 \
: rpm = 4002 : bpt = 43056
disk_type = "HP C2234 328MB"\
: ctlr = MD21 : fmt_time = 3\
: trks_zone = 3108 : asect = 0 : atrks = 131 \
: ncyl = 1289 : acyl = 2 : pcyl = 1574 : nhead = 7 : nsect = 71 \
: rpm = 3600 : bpt = 43056
disk_type = "HP C2235 422MB"\
: ctlr = MD21 : fmt_time = 3\
: trks_zone = 3996 : asect = 0 : atrks = 329 \
: ncyl = 1289 : acyl = 2 : pcyl = 1574 : nhead = 9 : nsect = 71 \
: rpm = 3600 : bpt = 43056
disk_type = "HP 97544 S 332MB"\
: ctlr = MD21 : fmt_time = 3\
: trks_zone = 1 : asect = 1 : atrks = 68 \
: ncyl = 1445 : acyl = 2 : pcyl = 1457 : nhead = 8 : nsect = 71 \
: rpm = 4002 : bpt = 37449
disk_type = "HP 97548 S 664MB"\
: ctlr = MD21 : fmt_time = 6\
: trks_zone = 1 : asect = 1 : atrks = 140 \
: ncyl = 1445 : acyl = 2 : pcyl = 1457 : nhead = 16 : nsect = 71 \
: rpm = 4002 : bpt = 37449
disk_type = "HP 97544 T 332MB"\
: ctlr = MD21 : fmt_time = 3\
: trks_zone = 1 : asect = 1 : atrks = 56 \
: ncyl = 1445 : acyl = 2 : pcyl = 1457 : nhead = 8 : nsect = 71 \
: rpm = 4002 : bpt = 37449
disk_type = "HP 97548 T 664MB"\
: ctlr = MD21 : fmt_time = 6\
: trks_zone = 1 : asect = 1 : atrks = 112 \
: ncyl = 1445 : acyl = 2 : pcyl = 1457 : nhead = 16 : nsect = 71 \
: rpm = 4002 : bpt = 37449
disk_type = "HP 97549 T 1.0GB"\
: ctlr = MD21 : fmt_time = 6\
: trks_zone = 1 : asect = 1 : atrks = 112 \
: ncyl = 1909 : acyl = 2 : pcyl = 1921 : nhead = 16 : nsect = 71 \
: rpm = 4002 : bpt = 42705
disk_type = "HP 97556 677MB"\
: ctlr = MD21 : fmt_time = 6\
: trks_zone = 6116 : asect = 0 : atrks = 282 \
: ncyl = 1960 : acyl = 2 : pcyl = 1962 : nhead = 11 : nsect = 71 \
: rpm = 4002 : bpt = 42840
disk_type = "HP 97558 1.07GB"\
: ctlr = MD21 : fmt_time = 6\
: trks_zone = 9675 : asect = 0 : atrks = 386 \
: ncyl = 1960 : acyl = 2 : pcyl = 1962 : nhead = 15 : nsect = 71 \
: rpm = 4002 : bpt = 42840
disk_type = "HP 97560 1.07GB short fmt"\
: ctlr = MD21 : fmt_time = 6\
: ncyl = 1552 : acyl = 2 : pcyl = 1554 : nhead = 19 : nsect = 71 \
: rpm = 4002 : bpt = 42840
disk_type = "HP 97560 1.35GB"\
: ctlr = MD21 : fmt_time = 6\
: trks_zone = 12255 : asect = 0 : atrks = 490 \
: ncyl = 1960 : acyl = 2 : pcyl = 1962 : nhead = 19 : nsect = 71 \
: rpm = 4002 : bpt = 42840
This archive was generated by hypermail 2.1.2 : Fri Sep 28 2001 - 23:06:41 CDT