I have been looking into this drive too and from what I've read it's rated to run 24/7 unlike the normal desktop drives (as previously stated).
I'm now in 2 minds which drive to buy as I already have 2 spinpoints, neither of which are the F1 raid editions, but have been used 24/7 for months without a problem.
Have also read that due to the "supposed" improved durability that the noise-levels are slightly higher than the 'non-24/7' spinpoint drives.
Looking at the price differences between standard & the 24/7 drives, and given the fact that I personally have had no issues with any of my spinpoint drives, I'm tempted to go down the standard spinpoint route and save a bundle of money