Hi, On 14/05/18 17:49, Marc Boisis wrote: > Currently we have a 294 OSD (21 hosts/3 racks) cluster with RBD clients > only, 1 single pool (size=3). That's not a large cluster. > We want to divide this cluster into several to minimize the risk in case > of failure/crash. > For example, a cluster for the mail, another for the file servers, a > test cluster ... > Do you think it's a good idea ? I'd venture the opinion that you cluster isn't yet big enough to be thinking about that; you get increased reliability with a larger cluster (each disk failure is a smaller % of the whole, for example); our largest cluster here is 3060 OSDs... We've grown this from a start of 540 OSDs. > Do you have experience feedback on multiple clusters in production on > the same hardware: I think if you did want to have multiple clusters, you'd want to have each cluster on different hardware. Regards, Matthew -- The Wellcome Sanger Institute is operated by Genome Research Limited, a charity registered in England with number 1021457 and a company registered in England with number 2742969, whose registered office is 215 Euston Road, London, NW1 2BE. _______________________________________________ ceph-users mailing list ceph-users@xxxxxxxxxxxxxx http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com
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