HP 7936 Support Manual page 133

COMl\fAND
CACHEOFF
CACHEON
CACHE LOG
CACHE STATUS
CANCEL
CHANNEL
CICLEAR
CLEAR LOGS
DESCRIBE
DIAG
ERT LOG
EXIT
Troubleshooting and Diagnostics
7936 and 7937
Table 8-1. External Exerciser Commands
(1
of 4)
DETAILS
7936XP/7937XP drives only.
7936XP/7937XP drives only.
7936XP/7937XP drives only. Correctable errors are defined as a single-bit
error in a byte of the cache memory. An uncorrectable error is a double-bit
error in a single byte of cache memory.
7936XP /7937XP drives only.
No device-specific information.
No device-specific information.
No device-specific information.
When clearing disc logs. all associated entries currently in RAM are also
cleared. Used to clear the cache log on 7936XP /7937XP drives.
The drive returns the following information:
MODEL: 7937 or 7936
UNIT: 0
TYPE: DISC
Max Cylinder Address: 1395
Max Head Address: 12 (7937) or 6 (7936)
Max Sector Address: 122
Max Block Address: 2,232,203 (7937) or 1,202,816 (7936)
Current Interleave: 1
The only diagnostic executed by the drive is the power-on diagnostic (num-
ber 0). The duration of the diagnostic is approximately 10 seconds.
Each head returns up to 106 entries. The format for the Error Code Byte
returned with each log entry is shown in figure 8-1. (Refer to paragraph
8-12 for more information concerning the ERT log.)
No device-specific information.
8-11