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SCSI Description
5–108
Quantum Atlas 10K II Ultra160/m SCSI Hard Disk Drives
MODE SENSE (6) Command (1Ah) (continued)
Table 5–49 Rigid Disk Geometry Page — Field Descriptions
Field
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 location. The bit is
reserved with the MODE SELECT command.
Number of Cylinders
17338
The number of physical cylinders that hold host data.
Number of Heads
3/5/10/20
The number of heads that can access host data.
Starting Cylinder -
17338
The value in this field is the physical cylinder at
Write Precompensation
which write precompensation is to begin. The first
cylinder number is 0. If the starting cylinder is equal to
the value in the Number of Cylinders field, write
precompensation is disabled.
Starting Cylinder -
0
The value in this field is the physical cylinder at
Reduced Write Current
which write current is reduced. The first cylinder
number is 0. If the starting cylinder for reduced write
current is equal to the value in the Number of
Cylinders field, reduced write current is disabled.
Drive Step Rate
0
Applies to stepper-motor actuators. Not applicable.
Landing Zone Cylinder
17338
This field indicates a two’s complement location
where the drive positions the disk heads. A negative
value indicates that the heads are positioned below
cylinder 0 by that number of cylinders. A positive
value greater than the number of cylinders indicates
that the heads are positioned beyond the cylinders
used for data storage at the location specified.
RPL
00b
Rotational Position Locking is used for spindle
synchronization in storage arrays. The modes are:
00b – Disabled
10b – Master
01b – Slave
11b – Not supported
RPL can be overridden if the Quantum (Vendor) Special
Function Control page Auto field value = 1.
This drive
does not support spindle synchronization.
(
continued
)
Summary of Contents for Quantum Atlas 10K II 9.2/18.4/36.7/73.4 GB
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Page 19: ...Contents Quantum Atlas 10K II Ultra 160 m SCSI Hard Disk Drives xix...
Page 25: ...About This Manual 1 4 Quantum Atlas 10K II Ultra 160 m SCSI Hard Disk Drives...
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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