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[6-4] : None (0x00)
[3-0] : Unexpected Power Loss Event
Count
177 Wear Range
Delta
Provides a value equal to the delta
between
the max worn Flash block and the least
worn
Flash block, as a percentage of the
max
rated wear of the SSD.
Equation:
Wear Range Delta = [(MW - LW) /
MRW] x 100
MW = P-E Cycles experienced by
Most Worn block
LW = P-E Cycles experienced by
Least Worn block
MRW = Max Rated Wear = P-E Cycle
rating for the Flash memory
Usage:
[3-0] : Wear Range delta
This Attribute identifies the
“delta” between most-worn and
least-worn Flash blocks, as a
percentage of the max rated
wear of the Flash memory on the
SSD.
For 10,000-cycle Flash, where
1% of rated cycles is 100 cycles,
a value of 1.5 for this Attribute
means the difference in wear
between the least worn block
and the most-worn block is 150
Erase cycles.
This attribute may not be
accurate until approximately
10% of drive life has been
used.
181 Program Fail
Count
Counts the number of flash program
failures.
Usage:
[6-4] : None (0x00)
[3-0] : Program Error Count
This Attribute returns the total
number of Flash program
operation failures since the
drive was deployed.
This Attribute is identical to
182 Erase Fail Count Counts the number of flash erase
failures.
Usage:
[6-4] : None (0x00)
[3-0] : Erase Error Count
This Attribute returns the total
number of Flash erase operation
failures since the drive was
deployed.
This Attribute is identical to
