User Manual

Constellation.2 SAS Product Manual, Rev. K 63
11.3.1 Inquiry data
Table 8 lists the Inquiry command data that the drive should return to the initiator per the format given in the SAS
Interface Manual.
Table 8: Constellation®.2 inquiry data
* Copyright year (changes with actual year).
** SCSI Revision support. See the appropriate SPC release documentation for definitions.
PP 10 = Inquiry data for an Inquiry command received on Port A.
30 = Inquiry data for an Inquiry command received on Port B.
R# Four ASCII digits representing the last four digits of the product firmware release number.
S# Eight ASCII digits representing the eight digits of the product serial number.
[ ] Bytes 16 through 26 reflect model of drive. The table above shows the hex values for Model ST9500620SS.
Refer to the values below for the values of bytes 16 through 26 of your particular model:
ST9500621SS 53 54 39 35 30 30 36 32 31 53 53
ST9500622SS 53 54 39 35 30 30 36 32 32 53 53
ST91000640SS 53 54 39 31 30 30 30 36 34 30 53 53
ST91000641SS 53 54 39 31 30 30 30 36 34 31 53 53
ST91000642SS 53 54 39 31 30 30 30 36 34 32 53 53
11.3.2 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:
1. 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 changeable.
2. 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 change
-
able 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 values in vol-
atile memory. It is not possible to change the current values (or the saved values) with a Mode Select command
Bytes Data (hex)
0-15 00 00 xx** 12 8B 00 PP 0A 53 45 41 47 41 54 45 20 Vendor ID
16-31 [53 54 39 35 30 30 36 32 30 53 53] 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 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
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* 36* 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