Log Sense
96122 • Revision: F Chapter 6 SCSI Commands 103
TapeAlert Flags
TABLE 6-18 lists information about the TapeAlert flags. Flags are:
■ in sequential order,
■ have valid values of 0 (off) or 1 (on)
■ reports all 32
Type codes indicate:
■ C = Critical,
■ W = Warning,
■ I = Informational.
Informational Exceptions TapeAlert Page Definitions:
Parameter Code A 2-byte field which represents the TapeAlert Flag number.
DU Disable Update is always 0, which indicates that the target updates the log
parameter value instead of the initiator.
DS Disable Save is always 1, which indicates saving the log is not supported.
TSD Target Save Disable is always 0.
ETC Enable Threshold Comparison is always 0.
TMC Threshold Met Criteria is always 0.
LBIN The library returns 0 indicating it is not used.
LP List Parameter is always 0, which indicates the log parameter is a data counter.
Parameter Length Parameter Length is always 0x01. All are 1-byte flags.
Flag A value of 0x01 indicates that the flag the Parameter Code is pointed to is
active; all other values are off.
TABLE 6-18 TapeAlert Flags
Code Flag Name Description Type
0001h Library Hardware A Set when the library cannot communicate with a tape
drive. This does not cause the library to stop operating.
C
0002h Library Hardware B Set when the servo control mechanism breaks lock.
The various causes are when the hand positioning on
the column fails or when the hand fails.
W
0003h Library Hardware C Set when the library has a hardware fault. C
0004h Library Hardware D Set when camera initialization, calibration, or
mechanical initialization test fails.
C
0005h Library Diagnostics
Required
Set when the library might have a hardware fault. W
0006h Library Interface Set when a corrupted SCSI command is sent to the
library from an initiator. Currently, this flag is set
when a parity error is detected on the SCSI bus.
C
0007h Predictive Failure Set when a library hardware failure is predicted. W
0008h Library Maintenance Set when preventive maintenance is required. W