Hi Lindsay, I have only 3 hosts, and is there any method to set a EC pool cluster in a better way Lindsay Mathieson <lindsay.mathieson@xxxxxxxxx> 于2020年6月26日周五 下午6:03写道： > On 26/06/2020 6:31 pm, Zhenshi Zhou wrote: > > I'm going to deploy a cluster with erasure code pool for cold storage. > > There are 3 servers for me to set up the cluster, 12 OSDs on each server. > > Does that mean the data is secure while 1/3 OSDs of the cluster is down, > > or only 2 of the OSDs is down , if I set the ec profile with k=4 and m=2. > > Default failure mode is by host, so ec(4,2) needs a minimum of 6 hosts > and while that could could function with up to two hosts down, it would > be unable to rebalance. > > > 3 hosts only supports k=2, m=1 - not recommend ;) > > -- > Lindsay > _______________________________________________ > ceph-users mailing list -- ceph-users@xxxxxxx > To unsubscribe send an email to ceph-users-leave@xxxxxxx > _______________________________________________ ceph-users mailing list -- ceph-users@xxxxxxx To unsubscribe send an email to ceph-users-leave@xxxxxxx
 |