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SCSI Description
Quantum Atlas 10K II Ultra160/m SCSI Hard Disk Drives
5–87
MODE SELECT (6) Command (15h) (continued)
5.14.3.11 Information Exceptions Control Page (1Ch)
This page defines the methods used by the disk drive to control the reporting and
operations of specific informational exception conditions. This page applies only
to informational exceptions that report an additional sense code of FAILURE
PREDICTION THRESHOLD EXCEEDED to the application client.
Informational exception conditions occur as the result of vendor-specific events
within a disk drive. An informational exception condition may occur
asynchronous to any commands issued by an application client.
Bit
Byte
7
6
5
4
3
2
1
0
0
PS
Page Code (1Ch)
1
Page Length (0Ah)
2
Perf
Reserved
EWASC
DExcpt
Test
Rsv’d
LogErr
3
Reserved
MRIE
4 - 7
(MSB)
Interval Timer
(LSB)
8 – 11
(MSB)
Report Count
(LSB)
Figure 5–37 Information Exceptions Control Page — Data Format
Table 5–41 Information Exceptions Control Page — Field Descriptions
Field
Default
Value
Description
PS
1
Parameters Savable. This bit is only used with the MODE
SENSE command. A returned value of 1 indicates that the
target is capable of saving the page in a non-volatile,
vendor-specific loaction. This bit is reserved with the
MODE SELECT command.
PERF
1
Performance. This bit enables/disables performance-
sensitive functions. For Atlas 10K II, this means enabling
or disabling flushing of SMART data to the media (done
hourly). The prediction algorithm is designed to reset the
current accumulated data approximately every 100,000
blocks read or written per head.
When this bit = 0, current accumulated SMART data is
preserved across power cycles.
When this bit = 1, current accumulated SMART data is lost
across power cycles.
(continued)
Summary of Contents for Quantum Atlas 10K II 9.2/18.4/36.7/73.4 GB
Page 15: ...Contents Quantum Atlas 10K II Ultra 160 m SCSI Hard Disk Drives xv...
Page 19: ...Contents Quantum Atlas 10K II Ultra 160 m SCSI Hard Disk Drives xix...
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Page 55: ...Installation 3 28 Quantum Atlas 10K II Ultra 160 m SCSI Hard Disk Drives...
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Page 315: ...Feature Descriptions 6 14 Quantum Atlas 10K II Ultra 160 m SCSI Hard Disk Drives...
Page 321: ...Appendix A Quick Reference A 6 Quantum Atlas 10K II Ultra 160 m SCSI Hard Disk Drives...
Page 363: ...Appendix B SCSI Bus Signal Timing B 42 Quantum Atlas 10K II Ultra 160 m SCSI Hard Disk Drives...
Page 369: ...Index I 4 Quantum Atlas 10K II Ultra 160 m SCSI Hard Disk Drives...
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