> I'm wondering if anyone is using NVME SSDs for journals? > Intel 750 series 400GB NVME SSD offers good performance and price in > comparison to let say Intel S3700 400GB. > http://ark.intel.com/compare/71915,86740 > My concern would be MTBF / TBW which is only 1.2M hours and 70GB per day for > 5yrs or 127 TBW. > Intel 750 1.2TB has a slightly better 219 TBW but still it can be a bit too > low for some people. > Thoughts?
Do not think this would be a good choice: These have about 0.2 Drive Writes Per Day. At my previous employer we used one 300GB Intel S3500 (0.3 DWPD) as a journal per 5 X 1TB 7200RPM disk. The cluster was not heavily used and burned through that SSD in a year. As you mentioned getting bigger SSDs will help a bit since you have more NAND chips to spread the load around. It is still more cost efficient to go for a smaller S3700 series though. E.g. The Intel 750, 1.2TB costs more then a 400GB S3700 and has a lot less endurance (about 200GB per day vs 4TB per day) Cheers, Robert van Leeuwen
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