On Thu, 5 Jul 2012, Eric_YH_Chen@xxxxxxxxxx wrote: > Hi, all: > > Just want to make sure one thing. > If I set replica size as 2, that means one data with 2 copies, right? > Therefore, if I measure the performance of rbd is 100MB/s, > I can imagine the actually io throughputs on hard disk is over 100MB/s *3 = 300 MB/s. > Am I correct? Right. "pool size" => "pg size" => number of osds in each PG => number of replicas So a pool with 'size 3' means 3x replication. sage
