As it’s consumer hardware / old I am guessing your only be using 1Gbps for the network.
If so that will definitely be your bottle neck across the whole environment having both client and replication data sharing a single 1Gbps. Your SSD’s will sit mostly idle, if you have 10Gbps then different story. ,Ash On Sun, 25 Nov 2018 at 1:10 AM, Anton Aleksandrov <an...@aleksandrov.eu> wrote: > Hello community, > > We are building CEPH cluster on pretty old (but free) hardware. We will > have 12 nodes with 1 OSD per node and migrate data from single RAID5 > setup, so our traffic is not very intense, we basically need more space > and possibility to expand it. > > We plan to have data on dedicate disk in each node and my question is > about WAL/DB for Bluestore. How bad would it be to place it on > system-consumer-SSD? How big risk is it, that everything will get > "slower than using spinning HDD for the same purpose"? And how big risk > is it, that our nodes will die, because of SSD lifespan? > > I am sorry, for such untechnical question. > > Regards, > Anton. > > _______________________________________________ > ceph-users mailing list > ceph-users@lists.ceph.com > http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com >
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