Hi, I'm looking to build a full osd ssd cluster, with this config: 6 nodes, each node 10 osd/ ssd drives (dual 10gbit network). (1journal + datas on each osd) ssd drive will be entreprise grade, maybe intel sc3500 800GB (well known ssd) or new Samsung SSD PM853T 960GB (don't have too much info about it for the moment, but price seem a little bit lower than intel) I would like to have some advise on replication level, Maybe somebody have experience with intel sc3500 failure rate ? How many chance to have 2 failing disks on 2 differents nodes at the same time (murphy's law ;). I think in case of disk failure, pgs should replicate fast with 10gbits links. So the question is: 2x or 3x ? Regards, Alexandre
 |