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SCSI Interface Product Manual, Rev. J
[7]
When set to one, the SCSI-2 bit changes the following SCSI-3 features from their SCSI-3 definition to the
SCSI-2 definition. When S2 equals zero, the following features remain as specified in other portions of this
specification:
a. Control Mode Page (0Ah) Length from 0Ah to 06h.
b. Caching Page (08h) Length from 12h to 0Ah.
[8]
These bits are reserved for future compatibility with Seagate host adapters. Though they presently may be
changeable, (see note [7]) these bits do not control anything, unless the individual drive's Product Manual,
Volume 1, indicates that they do and defines their use in the Mode Sense Data section.
[9]
See individual drive's Product Manual, Volume 1, Mode Sense Data section for a table showing codes that
indicate which of these bits are changeable by the host using the Mode Select command.
[10] A Parameter Savable (PS) bit of one indicates that the drive is capable of saving the page in a nonvolatile
vendor specific location (used only with Mode Sense command).
[11] If the Self Seek bit is set to one, the drive will enter self seek mode for testing purposes. Such testing
could include, but is not limited to, power dissipation and acoustics. While in this mode, the drive will
accept SCSI commands and will process them in between the self seek operations, including a mode
select to turn this bit back off. As such, this bit should be off for normal drive operations. If this bit is set to
zero, the drive will not self seek; normal operating mode.
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