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Error Count
This attribute tracks the number SATA
TX R_Errors + SATA RX R_Errors.
Normalized Equation: 200 - (RErrors *
SampleSize / NumSectorsTransferred)
Samplesize= 8000
NumSectorsTransferred= Total number
of sectors transferred to/from Host
Normalized Value Range:
Best = 100
Worst = 1
Raw Usage:
[3-0] : Current SATA RError count
[6-4] : None (0x00)
implemented per Customer
request.
201 Uncorrectable
Soft Read Error
(UECC)
Number of soft read errors that cannot
be fixed on-the-fly and requires deep
recovery provided by RAISE. The
normalized value is only computed
when the number of bits in the
"BitsRead" count is in the range of
10^10 to 10^12. The count is cleared at
power on reset and when >10^12 bits
have been read.
Normalized Equation:
10log10(BitsRead/UECC + 1)
SectorsRead= Number of sectors read
SectorsToBits= 512*8
BitsRead= SectorsRead*SectorsToBits
Normalized Value Range:
Best = 100
Worst = 1
Invalid = 0
Raw Usage:
[3-0] : Number of sectors read
[6-4]: Uncorrectable Soft error count
(UECC)
The Uncorrectable Soft Read
Error Rate includes all
uncorrectable ECC (UECC)
errors tracked by the
CONTROLLER. The normalized
equation for Uncorrectable Soft
Read Error Rate is logarithmic
since the valid BER range
of the attribute spans from
1.00E-10 to 1.00E-12. To force
positive numbers, the numerator
and denominator are flipped.
One is then added to the number
of errors in the denominator to
avoid a divide-by-0 condition
if no errors are encountered. By
taking the log of the inverted
BER and multiplying by ten a
reasonable range of normalized
values from 120 to 38
(representing a BER range of
1.00E-13 to 1.68E-04 ) are
presented. As defined this
attribute is identical to 195 and
204.
This Attribute reads ‘0’ until a
sample size between 10E10 and
10E12 is available to be tracked
