You wrote P3700 so that’s what I discussed ;) If you want to connect to your HBA you’ll want a SATA device like the S3710 series:
http://ark.intel.com/products/family/83425/Data-Center-SSDs#@Server The P3700 is a PCI device, goes into an empty slot, and is not speed-limited by the SATA interface. At perhaps higher cost. With 7.2 I would think you’d be fine, driver-wise. Either should be detected and work out of the box. — Anthony > > thx Alan and Anthony for sharing on these P3700 drives. > > Anthony, just to follow up on your email: my OS is CentOS7.2. Can > you please elaborate on nvme on the CentOS7.2, I'm in no way expert on > nvme, but I can here see that > https://www.pcper.com/files/imagecache/article_max_width/news/2015-06-08/Demartek_SFF-8639.png > the connectors are different for nvme. Does this mean I cannot connect > to PERC 730 raid controller? > > Is there anything particular required when installing the CentOS on > these drives, or they will be automatically detected and work out of > the box by default? Thx will > > On Mon, Nov 21, 2016 at 12:16 PM, Anthony D'Atri <a...@dreamsnake.net> wrote: >> The SATA S3700 series has been the de-facto for journals for some time. And >> journals don’t neeed all that much space. >> >> We’re using 400GB P3700’s. I’ll say a couple of things: >> >> o Update to the latest firmware available when you get your drives, qual it >> and stick with it for a while so you have a uniform experience >> o Run a recent kernel with a recent nvme.ko, eg. the RHEL 7.1 3.10.0-229.4.2 >> kernel’s bundled nvme.ko has a rare timing issue that causes us resets at >> times. YMMV. >> >> Which OS do you run? >> >> >> >> Read through this document or a newer version thereof >> >> https://www-ssl.intel.com/content/dam/www/public/us/en/documents/product-specifications/ssd-dc-p3700-spec.pdf >> >> or for SATA drives >> >> http://www.intel.com/content/www/us/en/solid-state-drives/ssd-dc-s3710-spec.html >> >> >> It’s possible that your vendor is uninformed or lying, trying to upsell you. >> At times larger units can perform better due to internal parallelism, ie. a >> 1.6TB unit may electrically be 4x 400GB parts in parallel. For 7200RPM LFF >> drives, as Nick noted 12x journals per P3700 is probably as high as you want >> to go, otherwise you can bottleneck. >> >> What *is* true is the distinction among series. Check the graph halfway >> down this page: >> >> http://www.anandtech.com/show/8104/intel-ssd-dc-p3700-review-the-pcie-ssd-transition-begins-with-nvme >> >> Prima fascia the P3500’s can seem like a relative bargain, but attend to the >> durability — that is where the P3600 and P3700 differ dramatically. For >> some the P3600 may be durable enough, given certain workloads and expected >> years of service. I tend to be paranoid and lobbied for us to err on the >> side of caution with the P3700. YMMV. >> >> — Anthony _______________________________________________ ceph-users mailing list ceph-users@lists.ceph.com http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com
