Apparently that 840 Pro from the article endured more than 2PB. However the new 1TB 850 Pro is declared to endure just 300 TB written:

http://www.samsung.com/global/business/semiconductor/minisit...

The 840 Pro that lasted more than 2 PBW was rated for 73TBW.

>With twice the endurance of the previous model, the 850 PRO will keep working as long as you do. Samsung's V-NAND technology is built to handle 300 Terabytes Written (TBW)* which equates to a 40 GB daily read/write workload over a 10-year period. Plus, it comes with the industry's top-level ten-year limited warranty. * 840 PRO: 73 TBW < 850 PRO: 150 TBW 850 PRO 120/250 GB : 150 TBW, 500/1TB(1,024 GB) : 300 TBW

The drive has 400 MB/s on the interface. That means that it's possible to deliver 34 TB per day to the disk and the rated 300 TB are achieved in less than 9 days. But the scariest effect is the "write multiplication:" the possibility to deliver the small chunks of the data through the 400 MB/s interface which can result in much more data actually overwritten on the flash (as the atomic size of the writes on the flash is quite big).

Of course an average consumer can't produce that. A lot of the data I write to any medium at home is never overwritten. But not every use is the use of an average consumer, knowing the actual limits is important.

That's why enterprise SSDs are rated at number of full writes per day rather than GB per day. If you are going to write at 400 MB/s for 24 hours a day then you need an enterprise SSD and not a consumer one.

So Samsung 850 PRO is not an enterprise SSD?

No, it's not: http://www.samsung.com/global/business/semiconductor/minisit...

(Also, drive writes per day and GB per day are the same metric.)

>was rated for 73TBW

they ALL are, every single SSD has this magical pulled out of the ass ~70TB number. And dont expect it to go up any time soon, every new generation of flash has fewer write cycles, this cancels out any gains you might have from greater capacity.

The 840 Pro came with a 5 year warranty, while the 850 Pro has a 10 year warranty. I wonder if the warranty still applies if you exceed the limit.

No, the warranty for 850 Pro is "10 years or the maximum TB written reached" (at least in EU).