SSD & HDD have a limited lifespan (You will find its life expectancy buried in its specifications) however as HDD are mechanical, wear and tear are more pronounced, thus as a rule of thumb, look at the warrantee period given for a HDD by the manufacture, and change it before this time is up. (Even if youíre using a RAID Array this still has to be followed, particularly if all the disks were bought at the same time)
I suspect Dikiís crashes have been because he hasnít changed them before the expected life span has expired.
Due to programs and files getting bigger, (Particularly Video) most never reach the life span of the disk as users have to upgrade to a larger one to fit all the files on.
Live entertainment, Real Ale, Great Scenery, Great Beaches, why would anyone want to live anywhere else (Iím definitely staying put).