Basically it seems like you have "caution" for the current SMART attributes: Reallocated Sector Count - this is basically bad sectors which have been remapped so that the drive does not use them anymore; G-sense error rate - this indicates how many times there were errors due to external shock or vibrations; Reallocated Event Count - this shows how many times the drive tried to reallocate data from the reallocated sectors.
All this means that you've had some bad sectors which are no longer used but since it seems that the reallocated event count's number is the same as the reallocated sector count, that means that the data was moved on the first try. Basically what all of this says is that you drive had a problem with several bad...