SSD Deathmatch: Crucial's M500 Vs. Samsung's 840 EVO

[Someone Somewhere]

Yes, that's true.

RAID 0 isn't really useful in SSDs though; it's usually fast enough that you can't notice the difference. Increases reliability issues too.

 

[MysteryGuy]

I was looking at the Crucial specs for the M500 960 and saw that the lifetime was listed as:

"72TB total bytes written (TBW), equal to 40GB per day for 5 years".

So, if you use this to regularly store giant files (maybe large backups, or video files), does that mean you can only write the drive about 75 times its capacity before it's reached its rating?

I have backups as big as 560 GB, so my concern is that this might get used up sooner than I would hope if I create/erase them regularly on a drive like this.

I guess I was surprised at the seemingly low number of times I could apparently fill the drive (and then erase it) before using it up.

Some drives list '1000 P/E' cycles as the life. In that case, a sequential fill/erase would seem to last more like 500 iterations (at a W.A.F. of 2).

 

[Someone Somewhere]

Unless you actually erase (i.e. overwrite with zeros), there's no writing going on when you delete it, other than in the allocation table.

That does seem fishy though. Should be way more than ~75 P/E cycles.

 

[JohnR132]

If a SSD drive fails, wonder how can you recover your lost data? Mechanical drives have data on the platters which can be recover.

 

[InvalidError]

If a SSD drive fails, wonder how can you recover your lost data? Mechanical drives have data on the platters which can be recover.

If the heads crashed and scraped the magnetic film off the platters, your data where this occurred got ground to dust just as much as a NAND chip bursting on fire.

From what I read, data recovery shops like SSDs because they can extract individual chips and from there, it is pretty much all-or-nothing - your SSD may have gone offline due to one NAND chip or the SSD controller blowing up but the data on all the other chips is still there.