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Interface
5-58 C141-E042-01EN
Attribute
ID
Attribute name
10 Number of retries made to activate the spindle motor
12 Number of power-on-power-off times
13 to 199 (Reserved)
200 Write error rate
201 to 255 (Unique to vendor)
•
Status flag
Bit 0: If this bit is 1, the attribute is within the insurance range of the device
when the attribute exceeds the threshold.
If this bit is 0, the attribute is outside the insurance range of the
device when the attribute exceeds the threshold.
Bits 1 to 15: Reserved bits
•
Current attribute value
The current attribute value is the normalized raw attribute data. The value
varies between 01h and 64h. The closer the value gets to 01h, the higher the
possibility of a failure. The device compares the attribute values with
thresholds. When the attribute values are larger than the thresholds, the
device is operating normally.
•
Attribute value for the worst case so far
This is the worst attribute value among the attribute values collected to date.
This value indicates the state nearest to a failure so far.
•
Raw attribute value
Raw attributes data is retained.
•
Failure prediction capability flag
Bit 0: The attribute value data is saved to a medium before the device enters
power saving mode.
Bit 1: The device automatically saves the attribute value data to a medium
after the previously set operation.
Bits 2 to 15: Reserved bits
•
Check sum
Two’s complement of the lower byte, obtained by adding 511-byte data one
byte at a time from the beginning.
•
Insurance failure threshold