There are several attribute classes. Some of them are life-critical, but
some are not! If Drive Health reports very close T.E.C. date for the non-critical
attribute this is not a reason for panic. You shouldn't consider it as a
dangerous warning. To see what attributes are life-critical for your disk drive
turn on the "Mark Critical Atributes" switch in "View" menu.
Following is a list of some attributes. Please note that it does not describe all possible attributes.
Attributes Description
| ID (hex) |
Name |
Description |
| 01 |
Read error rate |
Indicates a rate at which read retries are requested. Lower values indicate that there
is a problem with either disk surface or read/write heads.
|
| 04 |
Start/stop count |
Raw value of this attribute indicates total number of drive start/stop cycles (including
both power on/off switching and suspend/wakeup switching).
|
| 05 |
Reallocated sectors count |
Indicates amount of spare sector pool available. Spare sectors are used to replace
sectors that became bad for some reason. Value of 100 means that no sectors were remapped,
1 means that spare sectors are exhausted due to multiple remaps.
|
| 09 |
Power on hours count |
Raw value of this attribute indicates how long the drive was working (powered on).
|
| 0A |
Spin retry count |
Indicates number of times disk was unable to spin platters up on first attempt
(lower values mean more retries).
|
| 0B |
Recalibration retries |
Indicates number of times recalibration was requested. Low value (multiple
recalibrations) usually indicates some head positioning problem.
|
| C2 |
Temperature |
This attribute shows temperature for drives equipped with thermal sensor. Exact temperature can be obtained from the Meaning column.
|
| C8 |
Write error count |
Indicates a rate at which write retries are requested. Lower values indicate that there is a problem with either disk surface or read/write heads. |
