Northern Telecom DMS-100 Series Maintenance Manual page 132

4-98 Disk drive procedures
Procedure 4-46
Disk drive hardware error messages - procedures
2 Alarm Level:
disk mode change
3 Customer-Selected
Alarm Level
297-1001-537 Standard 01.02 December 1993
(continued)
Assign disk parameters.:
PA = To A
PB = To B
Reads: RA = from A
From prime:
R1 = read prime
Relocate track from standby (if standby
succeeded)
R3 = read standbyR4 = seek prime
R6 = write prime R7 = write standby
Backup track - used by backup:
T1 = seek prime
T3 = read prime
T4 = write standby
Writes: WA = To A
To both when redundant:
W1 = seek primeW2 = seek standby W3 = write prime
W4 = write standby
Parameters = ff gg hh(1) hh(2) hh(3) kk(1) kk(2)
ff = quantity of sectors involved, (in Hex).
gg = drive unit number, (in Hex).
hh(1) hh(2) hh(3) = logical sector number, (in Hex).
kk(1) kk(2) = buffer address, (in Hex).
Side = z = indicates one of two redundant sides.
A = disk A
cause: printed when an error occurs during an SCSI
(Small Computer System Interface) bus cycle
between the SCSI bus controller and the OMTI
disk controller.
Reason Code = 27
Corresponds to ERRMAP entry: DISK ER MESSAGE
System Default:
Type: Minor
Type:
(continued)
RC = recalibrate
RB = from B
R2 = read standby
(if read prime failed)
R5 = seek standby
T2 = seek standby
WB = To B
B = disk B
Level: 0
Level: