Data Sheet

19
8.2 SMART / Health Log Page
[Table 18] SMART Data information
BYTE
Description
Default Value
0
Critical Warning
Bits
Description
07:05
Reserved
04
If set to‘1’, then the volatile memory backup device has
failed. This field is only valid if the controller has a volatile
memory backup solution.
03
If set to‘1’, then the media has been placed in read only
mode.
02
If set to‘1’, then the NVM subsystem reliability has been
degraded due to significant media related errors or any
internal error that degrades NVM subsystem reliability.
01
If set to‘1’, then a temperature is above an over
temperature threshold or below an under temperature
threshold.
00
If set to‘1’, then the available spare has fallen below the
threshold.
0
2:1
Composite Temperature
Current
temperature
3
Available Spare
100
4
Available Spare Threshold
10
5
Percentage Used
0
31:6
Reserved
-
47:32
Data Units Read
0
63:48
Data Units Written
0
79:64
Host Read Commands
0
95:80
Host Write Commands
0
111:96
Controller Busy Time
0
127:112
Power Cycles
0
143:128
Power On Hours
0
159:144
Unsafe Shutdowns
0
175:160
Media and Data Integrity Errors
0
191:176
Number of Error Information Log Entries
0
195:192
Warning Composite Temperature Time
0
199:196
Critical Composite Temperature Time
0
.