Seagate ST300MP0014 Savvio 15K.1 SAS Product Manual - Page 55

9.3.1 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: Bytes 0-15 16-31 32-47 48-63 64-79 80-95 96-111 112-127 128-143 Savvio inquiry data Data (hex) 00 00 03** 12 8B 00 PP 0A 53 45 41 [53 54 39 37 33 34 35 31 53 53 20 R# R# R# R# S# S# S# S# S# S# S# 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 43 6F 70 79 72 69 67 68 74 20 30* 30* 36* 20 53 65 61 67 61 74 65 72 69 67 68 74 73 20 72 65 73 65 47 41 54 45 20 Vendor ID 20 20 20 20 20 Product ID S# 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 28 63 29 20 32* *Copyright 20 41 6C 6C 20 notice 72 76 65 64 20 * 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 25 reflect model of drive. The table above shows the hex values for Model ST973451SS. Refer to the values below for the values of bytes 16 through 25 of you particular model: ST973451SS 53 54 39 37 33 34 35 31 53 53 ST936751SS 53 54 39 33 36 37 35 31 53 53 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: 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 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 values 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. Savvio 15K SAS Product Manual, Rev. C 49