You did have a couple of (recoverable) read errors two days ago (note the Lifetime hours of 5275 compared to the Power_On_Hours of 5337). Recoverable read errors don't seem to be fatal if they only happen occasionally.SMART Self-test log structure revision number 1
Num Test_Description Status Remaining LifeTime(hours) LBA_of_first_error
# 1 Short offline Completed: read failure 90% 5275 4292870303
# 2 Short offline Completed: read failure 90% 5232 4292870303
I just checked 4 different drives on my systems (a mix of drives of different ages) and did not have any read errors reported.
As far as I understand, the most important attribute to look for is:
All drives have a certain percent of the available sectors held in reserve as spares in case other sectors fail for some reason. When a sector failure is detected (by the drive controller) the drive will re-map a spare sector to be used in place of the damaged one and the data from the bad sector is moved to the new one. That 'Reallocated_Sector_Ct' is the count of the number of bad sectors that have been remapped. See the '0' at the end of the line? Your drive has not remapped any sector yet, which is a good sign.5 Reallocated_Sector_Ct 0x0033 200 200 140 Pre-fail Always - 0
It is not unusual to have a few re-mapped sectors, particularly on older drives. What you have to watch for is when this number start growing. On a failing drive, this number can start growing fast. Oh and there are only so many sectors available for remapping. Once the drive runs out: data corruption!
Don't take my word for it. Try Googling for information on SMART data: http://www.google.com/search?hl=en&sour ... l6.10l16l0
Bottom line: from what I can see, it doesn't look like the drive is failing.
I hope that helps.