SUMMARY: format.dat for Micropolis 2112

From: Kernel Sandefur (SANDEFUR@INTELLICORP.COM)
Date: Sat Jul 24 1993 - 03:38:17 CDT


Here is the summary of messages I received in response to my request for
the format.dat entry for the Micropolis 2112 disk drive.

Thanks to the following people for your quick responses:
  stevem@csdc02.orl.mmc.com
  cc_gucky@rcvie.co.at (Gerhard Holzer)
  Steve.Kirkpatrick@artecon.com
  russ@issi.com
  toharry@kiowa.lerc.nasa.gov (Harry Decker)

Here is what I used for my 2112, running 4.1.x:

  # Micropolis 2112 -- Formatted Capacity: 1.05GB
  disk_type = Micropolis 2112" \
      : ctlr = SCSI : fmt_time = 9 \
      : ncyl = 1452 : acyl = 3 : pcyl = 1760 : nhead = 15 : nsect = 94 \
      : rpm = 5400
  partition = "Micropolis 2112" \
      :disk = "Micropolis 2112" : ctlr = SCSI \
      : a = 0, 16920 : b = 12, 112800 : c = 0, 2047320 \
      : d = 0, 0 : e = 0, 0 : f = 0, 0 \
      : g = 92, 180480 : h = 220, 1737120

For the 2112-15, running Solaris 2.X, use the following:

  # Micropolis 2112-15 -- Formatted Capacity: 999MB
  disk_type = "Arte Micropolis 2112-15" \
      : ctlr = SCSI : fmt_time = 13 \
      : ncyl = 2564 : acyl = 2 : pcyl = 2570 : nhead = 14 : nsect = 57 \
      : rpm = 5363 : bpt = 29184
  partition = "Arte Micropolis 2112-15" \
      : disk = "Arte Micropolis 2112-15" : ctlr = SCSI \
      : 0 = 0, 33516 : 1 = 42, 98952 : 2 = 0, 2046072 \
      : 6 = 166, 383040 : 7 = 646, 1530564

For the 2112S, use the following:

  #
  # The Micropolis 2112S responds to a read capacity command with 2051615
  # 512 byte blocks. It also indicates 15 heads and 1760 cylinders.
  # Geometry per Micropolis is 1455/15/94 which is 2051550, a loss of 65
  # blocks. Factoring gives us 2171/15/63 = 2051595, a loss of only 20 blocks.
  # RPM = 5400
  #
  disk_type = "Micropolis 2112S" \
          :ctlr=MD21 : fmt_time=5 \
          :trks_zone = 15 : atrks = 45 : asect = 6 \
          :ncyl=2168 : pcyl=2171 : nhead=15 : nsect=63 : acyl=3 \
          :rpm=5400 : bpt=36603 : bps=581
  partition = "Micropolis 2112S" \
          :disk = "Micropolis 2112S" : ctlr = MD21 \
          : a = 0, 32130 : b = 34, 128520 : c = 0, 2048760 \
          : d = 0, 0 : e = 0, 0 : f = 0, 0 \
          : g = 170, 629370 : h = 836, 1258740
 
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