What are meant by Current, Worst, Thresh, Data in Storage Drive

Solution

Not really.
Current,worst and threshold are normalized values. Usually max value is 100 and min 0. You can think of it as percentage.
Sometimes max value can be also 200 or 150, but that depends on HDD manufacturer.
The only word that is shortened is "Tresh." and means "threshold" all are standard English words with normal meaning.
Current = right now, this moment.... etc. Any dictionary would have meanings for those words as they are not only computer related.
Just look at that OK part, if anything goes wrong it would be shown in red.
 

It's really simple - when current value drops below threshold, this means, that failure has happened and it is advised to backup and replace the drive. Data column shows actual value of the parameter.
Significant parameters are:
Relocated sector count,
Relocated event count,
Current pending sectors.
Rest of those are less important, but also could signal about some problem.
 

cr1zydog

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May 4, 2017
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As you said "...when current value drops below threshold, this means, that failure has happened and it is advised to backup and replace the drive.", but here Relocated event count, Current pending sectors.are 0 (also many columns are in value 0) but Thresh is 100, does it mean these columns value will be in minus figure if drive gets failure?
 

Not really.
Current,worst and threshold are normalized values. Usually max value is 100 and min 0. You can think of it as percentage.
Sometimes max value can be also 200 or 150, but that depends on HDD manufacturer.
 
Solution

cr1zydog

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May 4, 2017
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Ok, thank you for your answer, it will help me in future.