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Error Detection
Code Errors
(IOEDC errors)
Code Errors
(IOEDC errors)
This attribute tracks the number of I/O
errors encountered during reads from
flash memory.
Normalized Equation: 100 -
(IOEDCErrors)
Normalized Value Range:
Best = 100
Worst = 1
Raw Usage:
[3-0] : Cumulative lifetime IOEDC error
count
processor minimizes the risk
of unreported data miscompares
by calculating and appending a
CRC based on the data and L-
page location as it writes to
flash. The CRC is subsequently
verified when data is read. This
attribute tracks any CRC errors
encountered in this path. The
normalized equation for IOEDC
Error Count decrements by 1 for
each IOEDC error.
Uncorrectable
Errors (URAISE)
Uncorrectable Errors (URAISE)
This attribute tracks the number of
uncorrectable RAISE (URAISE) errors
reported back to the host for all data
access
commands.
Normalized Equation: 100 - (URAISE)
Normalized Value Range:
Best = 100
Worst = 1
Raw Usage:
[6-2] : None (0x00)
[1-0] : Cumulative lifetime URAISE
errors
The uncorrectable ECC error
rate tracks the CONTROLLER
Uncorrectable RAISE (URAISE)
errors. The normalized equation
for Uncorrectable Error Count
decrements by 1 for each
URAISE error. Uncorrectable
errors reported in this field are
uncorrectable by any level of
ECC protection including RAISE.
Temperature of the SSD assembly.
That is, the temperature inside the
SSD housing.
Normalized Equation:
Temperature = Temperature (Celsius)
Normalized Value Range:
Lowest = -127
Highest = 127
Raw Usage:
The normalized temperature is a
straight Celsius value as
obtained from the primary
SSD temperature sensor.
The raw values represent current
and historical Celsius
temperature values from the
primary SSD temperature
sensor.
For SSD designs incorporating
multiple temperature sensors,
current temperature is taken
from the sensor with the highest
[1-0] : Current temperature (C; from
sensor)
[3-2]: Highest temperature (C; since
