[ceph-users] Re: ssd suggestion

Those are QLC, with low durability. They may work okay for your use case if you keep an eye on lifetime, esp if your writes tend to sequential. Random writes will eat them more quickly, as will of course EC. Remember that recovery and balancing contribute to writes, and ask Micron for the latest firmware, which can take a long time to be published on the web site. > On Nov 23, 2020, at 5:10 AM, mj <lists(a)merit.unu.edu> wrote: > > Hi, > > We are going to replace our spinning SATA 4GB filestore disks with new 4GB SSD bluestore disks. Our cluster is reading far more than writing. > > Comparing options, I found the interesting and cheap Micron 5210 ION 3,84TB SSDs. The way we understand it, there is a performance hit, when it comes to continuous writing speeds. But costwise those SSD's are very interesting. (only 450 euro each) > > Our cluster is only small: consisting of three servers, in a 3/2 redundancy config. I was planning to replace the 8 OSDs on one server, and then take some time to checkout how well (or not...) they perform. > > We just wanted to ask here: anyone with suggestions on alternative SSDs we should consider? Or other tips we should take into consideration..? > > Thanks, > MJ > _______________________________________________ > ceph-users mailing list -- ceph-users(a)ceph.io > To unsubscribe send an email to ceph-users-leave(a)ceph.io