Specifications

8.8.13 Mode Page 1C (Informational Exceptions Control)
00h11
00h10
00h9
00h
(MSB)
Report Count
(LSB)
8
00h7
00h6
00h5
00h
(MSB)
Interval Timer
(LSB)
4
00hMethod of ReportingReserved3
00h
[LOGERR]
RSVDTESTDEXCPTEWASC[EBF]RSVD[PERF]2
0AhPage Length = 0Ah1
9ChPage Code = 1ChRSVD=0PS0
01234567
Default
BIT
Byte
Figure 103. Page 1C (Informational Exceptions Control)
! LOGERR (Log Errors) is ignored.
! EWASC (Enable Warning ASC) of one enables Temperature Warning (sense key 01h, additional
sense code 0Bh, and additional sense code qualifier 01h) when the temperature reading exceeds
Temperature Threshold (Mode Page 0). The reporting is controlled by DEXCPT and Method of
Reporting. EWASC of zero disables Temperature Warning.
! DEXCPT (Disable Exception Control) of one disables all information exception operations. DEXCPT of
zero enables information exception operations. The reporting of information exception conditions
when DEXCPT bit is set to zero is determined by Method of Reporting.
! TEST of one instructs the drive to generate false information exception at the next interval time, as
determined by Interval Timer if DEXCPT is set to zero. Method of Reporting and Report Count would
also apply. The false drive failure is reported with an additional sense qualifier of FFh. TEST of zero
instructs the drive to stop generating false information exception.
! EBF (Enable Background Function) is ignored.
! PERF (Performance) is ignored.
! Method of Reporting indicates the methods used by the drive to report informational exception
conditions.
Code
Description
0h No reporting of informational exception condition: This method instructs the drive to
not report informational exception condition.
1h Asynchronous event reporting: Not supported.
2h Generate unit attention: This method instructs the drive to report informational exception
conditions by returning a CHECK CONDITION status on any command. The sense key
Ultrastar 146Z10 hard disk drive specifications
111