Quantum Quantum Atlas 10K II 9.2/18.4/36.7/73.4 GB, Product Manual

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SCSI Description
Quantum Atlas 10K II Ultra160/m SCSI Hard Disk Drives 5–109
MODE SENSE (6) Command (1Ah) (continued)
Table 5–49 Rigid Disk Geometry Page — Field Descriptions (continued)
Field Value Description
Rotational Offset 0 Rotational Offset indicates the amount of rotational
offset that the drive uses when synchronized. The
rotational offset is applied in the retarded direction
(lagging the synchronized spindle master). The value
in the field is determined by the following formula:
Offset = 0 … 255
256
For example, a numerator of 128 indicates an offset of
1/2 revolution (180°).
The valid parameter values are 0 to 255.
The specified value may be rounded. Rotational offset
is not used when the drive is configured as the
synchronized-spindle master.
Medium Rotation Rate 10021 The disk rotation speed in RPM.