All I have to add to the Topic is this, purchased my first SSD (128GB Crucial m4) in 2012, several more were to follow over the next few years, to include three NVMe based models, and have yet to have any 'die' on me, or any issue for that matter.
However, I've always taken the step that jonuk76 posted, having downloads, documents, OneDrive, Google Drive & Dropbox folders directed to a HDD to preserve writes & don't create virtual machines on any. I keep all optimized, as well as followed sound advise by making proper changes in the registry & other performance tweaks, to this day, none of my SSD's has reached the 97% mark, all between 98-99% useful lifespan remaining. A specific date or year or failure is difficult to measure, the wear cycle shown is assuming one's using the same computer all of the time & having the same number of writes per day. If using multiple computers, as I do, how can one place a time on exhaustion of the SSD's lifespan?
Another step I take to keep a SSD running at peak performance is booting into the UEFI (or BIOS) monthly & allowing to stand there for no less than 12 hours, this forces an extended garbage collection, otherwise known as GC, maybe that's why my luck has been so good.
At any rate, today's SSD's have a much lower failure rate than HDD's, otherwise Samsung wouldn't extend a 10 year warranty on their 850 Pro line, and I believe SanDisk also produced a model with the same, maybe to compete. If these OEM's didn't have confidence in their SSD's, they'd not have provided such generous warranties, no HDD OEM has done the same.
All of this stated, am about to pull the trigger on my next SSD, a MLC based Crucial BX300 240GB that's combines with SLC write acceleration for $89.99 shipped, need a spare, as I just installed my last unused one (Samsung 120GB 850 EVO) in my latest build & even after over a year stored, performs great for it's size class.
Here's the pic of the Sammy's performance in my latest build, consisting of mostly used along with a two new components (PSU & MB). On writes, outperforms every 2.5" SSD owned other than my 850 Pro, amazing for a 120GB SSD that I expected less of.
Fear HDD's, not SSD's, which is why in my best rigs, have a 2TB WD Gold (Enterprise Class) HDD installed, has an industry leading 5 year warranty & a 128MB cache, double that of the consumer oriented Black series & the writes are almost as fast as the Crucial m4 at 204 MB/sec.
And should a SSD die, since I perform regular drive images with Macrium Reflect, can easily replace w/out having to reinstall everything. No big deal, as larger capacity models costs less now than when I purchased most of the ones owned, can bite the bullet.
Edited by cat1092, 06 September 2017 - 04:59 AM.