Seagate ST3146855FC ユーザーズマニュアル

Cheetah 15K.5 FC Product Manual, Rev. D

9.3.1

Inquiry data

Table 17 lists the Inquiry command data that the drive should return to the initiator per the format given in the
Fibre Channel Interface Manual.

SCSI Revision support. Refer to the appropiate SPC release documentation for definitions.

50 = Inquiry data for an Inquiry command received on Port A.

70 = Inquiry data for an Inquiry command received on Port B.

Four ASCII digits representing the last four digits of the product firmware release number.

Eight ASCII digits representing the eight digits of the product serial number.

[ ]

Bytes 18 through 26 reflect model of drive. The table above shows the hex values for Model ST3300655FC.

Refer to the values below for the values of bytes 18 through 26 of you particular model:

ST3146855FC

53 54 33 31 34 36 38 35 35 46 43

ST373455FC

53 54 33 37 33 34 35 35 46 43 20

9.3.2

Mode Sense data

The Mode Sense command provides a way for the drive to report its operating parameters to the initiator. The
drive maintains four sets of mode parameters:

Default values

Default values are hard-coded in the drive firmware stored in flash E-PROM (nonvolatile memory) on the
drive’s PCB. These default values can be changed only by downloading a complete set of new firmware
into the flash E-PROM. An initiator can request and receive from the drive a list of default values and use
those in a Mode Select command to set up new current and saved values, where the values are change-
able.

Saved values

Saved values are stored on the drive’s media using a Mode Select command. Only parameter values that
are allowed to be changed can be changed by this method. Parameters in the saved values list that are not
changeable by the Mode Select command get their values from default values storage.

When power is applied to the drive, it takes saved values from the media and stores them as current val-
ues in volatile memory. It is not possible to change the current values (or the saved values) with a Mode
Select command before the drive achieves operating speed and is “ready.” An attempt to do so results in a
“Check Condition” status.

On drives requiring unique saved values, the required unique saved values are stored into the saved val-
ues storage location on the media prior to shipping the drive. Some drives may have unique firmware with
unique default values also.

Table 17:

Cheetah 15K.5 FC inquiry data

Bytes

Data (hex)

0-15

xx**

Vendor ID

16-31

[53

43]

Product ID

32-47

48-63

64-79

80-95

96-111

32*

*Copyright

112-127

30*

36*

notice

128-143