Seagate Fibre Channel Interface - Manual (Page 241)

Fibre Channel Interface Manual, Rev. D 227
Landing Zone Cylinder
Not applicable.
Medium Rotation Rate
On Mode Sense commands, these bytes return drive nominal rotation rate in revolutions per minute for synchronous spin-
dle operation. The bytes have no meaning for Mode Select.
Number of Cylinders
The number of physical cylinders used for data storage. This may or may not include spare cylinders set aside for flaw real-
location. See individual drive’s Product Manual, Volume 1, which specifies what the drive reports.
The disc drive uses some additional cylinders for storing disc drive parameters, defect lists, or for diagnostic purposes.
These are not accessible by the user.
Number of Heads
The maximum number of data (read/write) heads on the disc drive.
Page Code
04h
Rigid Disc Drive Geometry Parameters page code.
Page Length
16h
The length of the Rigid Disc Drive Geometry Parameters page (in bytes). If the allocation length is too small to trans-
fer all of the page, the page length is not adjusted to reflect the truncation.
PS (Parameter Savable)
See applicable drive’s Product Manual, Volume 1, for features supported. This bit is not used with the Mode Select com-
mand.
1
Page 04 parameter data is savable and is saved when a Format function is performed. In some drives an exception
exists that applies to bytes 17 and 18. In the exception drives, bytes 17 and 18 are only saved if the SMP bit in the
Mode Select command (Table 138) is 1.
Rotational Offset
Rotational skew in the lagging direction used for spindle synchronization.
XXh
Represents a XXh/FFh fractional part of a revolution lagging offset. One revolution lag is maximum.
RPL (Rotation Position Locking)
Used for spindle synchronization.
00b
Automatic spindle synchronization (automatic master arbitration is used to determine which device in the chain is to
be the master).
01b The target operates as a synchronized spindle slave.
10b The target operates as a synchronized spindle master.
11b The target operates as a synchronized spindle master control (not supported by the disc drive).
Starting Cylinder–Reduced Write Current
Not applicable.
Starting Cylinder–Write Precomp
Not applicable.
150
150
150
150
150
150
150
150
150
150
150