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CDC 94171-327/344 (327MB)

5 1/4" 3600 RPM Embedded SCSI
Sun-4/330/370/470

Options RREXP-P7 / RR129 / RR134
Options 526 / 527 / 530 / 539

555-1005 370-1153 370-1230
w Bracket
w/o Bezel
77777107
w/o Bracket
w/o Bezel
77777107
3 1/4" Height
w/o Bracket
w Bezel
77777126
3 1/4" Height

End View

Ground Select Jumper J3

Drive Select and Option Select Jumper J4

In the External Storage Module, orient the Address Select Switch Cable as shown, and plug it into J4.

Terminator Power Source Select Jumper J5

Power

1.5 Amps @ +5Vdc
1.4 Amps @ +12Vdc
24.3 Watts


Jumper Settings

555-1005 and 370-1153 Only

J3
PIN SETTING DESCRIPTION
1-2 In AC + DC ground connected to signal ground
3-4 In AC + DC ground connected to chassis ground
J4
PIN SETTING DESCRIPTION
P In Parity enabled
J5
PIN SETTING DESCRIPTION
3-4 In Terminator power from DC connector

370-1230 Only

J3
PIN SETTING DESCRIPTION
1-2 Out AC + DC ground not connected to signal ground
3-4 Out AC + DC ground not connected to chassis ground
J4
PIN SETTING DESCRIPTION
P Out Parity enabled
J5
PIN SETTING DESCRIPTION
3-4 In Terminator power from DC connector

Address Jumper Settings

J4
PIN SETTING DESCRIPTION TARGET
1, 2, 4 Out Drive select Target 0
1 In Drive select Target 1
2 In Drive select Target 2
1, 2 In Drive select Target 3

Notes

  1. Remove the terminators from the underside of the drive.
  2. Terminate the Sun386i with external terminator 530-1381.
  3. Sun-3/470, Sun-4/370, and Sun-4/470 systems with dual option trays are terminated internally on the 501-1493 Interface PCB. The left side tray must be installed to terminate the SCSI bus.
  4. Sun-4/370 and Sun-4/470 systems with a single option tray are terminated externally with terminator 150-1346.
  5. Terminate the External Storage Module with terminators 530-1381 or 150-1785.
  6. Terminate the Sun-4/330 on the SCSI-Out PCB with three 220/330 terminators, 120-1608-01.

Format Utility Notes

  1. The 94171-327 has fewer cylinders than the 94171-344.
  2. The SunOS 4.x format utility fails if the 94171-327 is used with the standard format.dat entry on any system other than a Sun386i.
  3. Use the following format.dat entry for the 94171-327 on SunOS 4.x.

    disk_type = "CDC Wren IV 94171-327" \
    : ctlr = SCSI : fmt_time = 4 : cache = 0x11: trks_zone = 9 \
    : asect = 3 : ncyl = 1520 : acyl = 2 : pcyl = 1549 : nhead = 9 \
    : nsect = 46 : rpm = 3600 : bpt = 20833


  4. Solaris 2.x includes an entry for the 94171-327 in format.dat. Remove the comment symbol "#" to use the entry.

References

  1. 386i Field Service Manual, 814-0002-10.
  2. 327MB Embedded SCSI Configuration Procedures, 814-1015-01.
  3. 5 1/4-Inch Disk Drive Installation in the 12-Slot Office Pedestal Manual, 813-1055-10.
  4. Sun 327 Mbyte SCSI Disk Configuration Manual, 813-2048-03.


Last updated: December 2, 1996
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