markinnz wrote:
Darking wrote:
does that really matter tho?
I believe HP gives 7 years warranty on all SSDs bought after june 2015.
https://www.hpe.com/h20195/v2/getpdf.as ... f?ver=10.0True .. but I wonder what will happen in 3 years time if all our drives have worn down at the same rate and all want to be replaced in the same week
- yes our 3PARs are the el-cheapo model with the cMLCs .. sigh!
To be honest I would like to see that
I've looked at some really hammered systems and the SSD life % is still in the high 80-ies after a couple of years. Just looking at the basics and taking the absolute negative road.
1 DWPD over 3 years for a 1.92TB and 3.84TB SSD.
That's more than 2PB of data needed to be written to a 1.92TB and more than 4PB of data needed to be written to the 3.84TB SSD.
Over 7 years, that would yearly amount to about 300TB per 1.92TB SSD and 600TB for the 3.84TB SSD...
If my calculations are not completely off, that would be about a constant average of 10MB/s write for 1.92TB and 20MB/s for the 3.84TB for 7 years.
With 16kB blocks, thats 640 IOPS (for 1.92) and 1280 IOPS (for 3.84TB) of contant write per SSD in the system over 7 years.
And thats the absolutely most negative road with 3 years service life of 1 DWPD with 7 years until wear out and excludes all benefits of adaptive sparing. From what I've seen on hammered systems with the first gen 1.92TB SSDs, I'm really not worried about wear out on the SSDs.