Datasheet

4.1 Control/Sense Commands
C141-C008 4-59
• Starting Boundary
This field is enabled by the MODE SENSE command. This field indicates
the beginning of the active notch or, if the active notch is zero, the beginning
of the logical unit (IDD).
• Ending Boundary
This field is valid in the MODE SENSE command. This field indicates the
ending of the active notch or, if the active notch is zero, the ending of the
logical unit (IDD) (see Table 4.18).
• Page Notch
This is a bit map which shows whether or not other mode pages are being
changed if the device is notched. The most significant bit of this field
corresponds to page code 3Fh and the least significant bit corresponds to
page code 00h. If it is specified, the IDD disregards this value.
(9) Informational exceptions control page (page code = 1C)
Table 4.26 MODE SELECT parameters: informational exception control page
Bit
Byte
7 6 5 4 3 2 1 0
0 0 0 0 1 1 1 0 0
1 Page length (X’0A’)
2 Perf 0 EBF EWASC DExcpt Test 0 LogErr
Default 0 0 0 0 1 0 0 0
Variable 1 0 1 1 1 1 0 1
3 0 0 0 0 MRIE
Default 0 0 0 0 0 0 0 0
Variable 0 0 0 0 0 1 1 1
4-7 Interval Timer
Default X‘00000000’
Variable X‘FFFFFFFF’
8-11 Report Count
Default X‘00000001’
Variable X‘FFFFFFFF’
This page specifies whether the drive failure prediction function is enabled or
disabled and the reporting method when a drive failure is predicted.
a. LogErr (log error)
This bit (LogErr) of zero indicates that the logging of informational
exception conditions within a target is vendor specific. A LogErr bit of one
indicates the target logs informational exception conditions.