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Cheetah 36XL Product Manual, Rev. E 49
Table 6 lists the Standard Inquiry command data that the drive should return to the initiator per the format given
in the
SCSI Interface Product Manual,
part number 75789509, Inquiry command section.
[]
1
03 means SCSI-3 (Ultra160) implemented.
[]
2
02 means response data in SCSI-3 (Ultra160) format. In addition, 12 indicates that the drive uses the hier-
archical addressing mode to assign LUNs to logical units (default is 12).
R# Four ASCII digits representing the last four digits of the product Firmware Release number. This informa-
tion is also given in the Vital Product Data page C0h, together with servo RAM and ROM release num-
bers.
S# Eight ASCII digits representing the eight digits of the product serial number.
[]
3
Bytes 18 through 25 reflect model of drive. The table above shows hex values for Model ST336705LC.
Values for all models are listed below:
ST336705LW 33 33 36 37 30 35 4C 57
ST318405LC 33 31 38 34 30 35 4C 43
ST318405LW 33 31 38 34 30 35 4C 57
ST39205LC 33 39 32 30 35 4C 43 20
ST39205LW 33 39 32 30 35 4C 57 20
[]
5
Copyright Year - changes with actual year.
9.3.1 Inquiry Vital Product data
Instead of the standard Inquiry data shown in Table 6, the initiator can request several Vital Product Data
pages by setting the Inquiry command EVPD bit to one. The
SCSI Interface Product Manual,
part number
75789509, lists the Vital Product Data pages and describes their formats. A separate Inquiry command must
be sent to the drive for each Vital Product Data page the initiator wants the drive to send back.
9.3.2 Mode Sense data
The Mode Sense command provides a means for the drive to report its operating parameters to the initiator.
The drive maintains four sets of Mode parameters, Default values, Saved values, Current values and Change-
able values.
Default values are hard coded in the drive firmware that is stored in flash EPROM nonvolatile memory on the
drive PCBA. Default values can be changed only by downloading a complete set of new firmware into the flash
EPROM. 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 changeable.
Saved values are stored on the disk media using a Mode Select command. Only parameter values that are
allowed to be changed can be changed by this method. See “Changeable values” defined below. Parameters in
the saved values list that are not changeable by the Mode Select command get their values from the default
values storage.
Table 6: Cheetah 36XL family drive Standard Inquiry data
Bytes Data (HEX)
0-15 00 00 [03]
1
[12]
2
8B 00 [01] [3E] 53 45 41 47 41 54 45 20 VENDOR ID
16-31 53 54 [33] [33] [36] [37] [30] [35] [4C] [43]
3
20 20 20 20 20 20 PRODUCT ID
32-47 R# R# R# R# S# S# S# S# S# S# S# S# 00 00 00 00
48-63 000000 0000000000 0000000000000000
64-79 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
80-95 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
96-111 00 43 6F 70 79 72 69 67 68 74 20 28 63 29 20 [32] COPYRIGHT
112-127 [30] [30] [30]
5
20 53 65 61 67 61 74 65 20 41 6C 6C 20 NOTICE
128-143 72 69 67 68 74 73 20 72 65 73 65 72 76 65 64 20