Table 119 Identify Device Information -Continued - Western Digital Ultrastar DC HC310 Specifications

Word Content
88 xx7FH
89 xxxxH
90 xxxxH
91 00FEH
92 FFFEH
93 0000H
94 0000H
95 xxxxH
96 xxxxH

Table 119 Identify device information -Continued-

Description
Ultra DMA Transfer modes
15- 8 (=xx) Current active Ultra DMA transfer mode
15
14
13
12
11
10
9
8
7- 0 (=7F) Ultra DMA Transfer mode supported
7
6
5
4
3
2
1
0
15 1=Extended Time is reported in bits 14:0
0=Time is reported in bits 7:0
If bit 15 is set to one
14:0 Time required for security erase unit completion
Time= value(xxxxh)*2 [minutes]
If bit 15 is set to zero
14:8 Reserved
7:0 Time required for security erase unit completion
Time= value(xxxxh)*2 [minutes]
15 1=Extended Time is reported in bits 14:0
0=Time is reported in bits 7:0
If bit 15 is set to one
14:0 Time required for Enhanced security erase completion
If bit 15 is set to zero
14:8 Reserved
7:0 Time required for Enhanced security erase completion
Current Advanced power management value
Current Password Revision Code
COMRESET result
Reserved
Stream Minimum Request Size
Number of sectors that provides optimum performance in streaming environment. This
number shall be a power of two, with a minimum of eight sectors (4096 bytes). The
starting LBA value for each streaming command should be evenly divisible by this
request size.
Streaming Transfer Time – DMA
The worst-case sustainable transfer time per sector for the device is calculated as
follows:
Streaming Transfer Time = (word 96) * (words(99:98) / 65536)
If the Streaming Feature set is not supported by the device, the content of word 96 shall
be zero.
Western Digital Hard Disk Drive OEM Specification
Reserved (=0)
Mode 6 1 = Active
Mode 5 1 = Active
Mode 4 1 = Active
Mode 3 1 = Active
Mode 2 1 = Active
Mode 1 1 = Active
Mode 0 1 = Active
Reserved (=0)
Mode 6 1 = Support
Mode 5 1 = Support
Mode 4 1 = Support
Mode 3 1 = Support
Mode 2 1 = Support
Mode 1 1 = Support
Mode 0 1 = Support
146
0 = Not Active
0 = Not Active
0 = Not Active
0 = Not Active
0 = Not Active
0 = Not Active
0 = Not Active