On Thu, Apr 2, 2015 at 10:03 AM, Mark Nelson <mnelson@xxxxxxxxxx> wrote: > Thought folks might like to see this: > > http://hothardware.com/reviews/intel-ssd-750-series-nvme-pci-express-solid-state-drive-review > > Quick summary: > > - PCIe SSD based on the P3700 > - 400GB for $389! > - 1.2GB/s writes and 2.4GB/s reads > - power loss protection > - 219TB write endurance > > So basically looks extremely attractive on paper except for the write > endurance. I suspect this is not actually using HET cells (a summary I read > said it was). How far beyond Intel's endurance rating the card can go is > the big question. http://techreport.com/review/28050/intel-750-series-solid-state-drive-reviewed "The firmware is also configured to allocate 8-9% of the drive's total flash capacity to overprovisioned area. That's similar to the overprovisioning in typical consumer drives but less than the ~25% set aside by the P3700." "The chips weigh in at 16GB apiece, and they're a lower grade than the top-shelf bin reserved for the P3700." "(The Intel 335 Series in our SSD Endurance Experiment wrote over 700TB before hitting that media wear threshold.) When the NAND's limits are reached, the 750 Series is designed to slip into a "logical disable" mode that throttles write speeds severely enough to produce an effective read-only state. Intel's other consumer SSDs are programmed to brick themselves at the next reboot, preventing users from accessing their data. The 750 Series instead emulates its enterprise counterparts, which remain in read-only mode through subsequent reboots." That 335 series they're referring to had a rated lifetime of 22TB. I suspect they're using different rules for this new one — but it should still go a loooong way! -Greg > > Mark > _______________________________________________ > ceph-users mailing list > ceph-users@xxxxxxxxxxxxxx > http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com _______________________________________________ ceph-users mailing list ceph-users@xxxxxxxxxxxxxx http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com
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