On 12/21/2015 05:30 PM, Lionel Bouton wrote: > Hi, > > Sébastien Han just added the test results I reported for these SSDs on > the following page : > > http://www.sebastien-han.fr/blog/2014/10/10/ceph-how-to-test-if-your-ssd-is-suitable-as-a-journal-device/ > > The table in the original post has the most important numbers and more > details can be found in the comments. > > To sum things up, both have good performance (this isn't surprising for > the S3710 but AFAIK this had to be confirmed for the PM863 and my > company just purchased 2 of them just for these tests because they are > the only "DC" SSDs available at one of our hosting providers). > PM863 models are not designed for write-intensive applications and we > have yet to see how they behave in the long run (in our case where PM863 > endurance is a bit short, if I had a choice we would test SM863 models > if they were available to us). > > So at least for the PM863 please remember that this report is just about > the performance side (on fresh SSDs) which arguably is excellent for the > price but this doesn't address other conditions to check (performance > consistency over the long run, real-world write endurance including > write amplification, large scale testing to detect potential firmware > bugs, ...). > Interesting! I might be able to gain access to some PM836 3,84TB SSDs later this week. I'll run the same tests if I can. Interesting to see how they perform. > Best regards, > > Lionel > _______________________________________________ > ceph-users mailing list > ceph-users@xxxxxxxxxxxxxx > http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com > -- Wido den Hollander 42on B.V. Ceph trainer and consultant Phone: +31 (0)20 700 9902 Skype: contact42on _______________________________________________ ceph-users mailing list ceph-users@xxxxxxxxxxxxxx http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com
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