by node I mean physical servers. the number of OSD's doesn't really affect the choice of MON's. One Mon will always be the leader. But Mon's (and traffic to them) is very lightweight. So you don't need to fear. And yes, you omit the RAID in your server, you use one OSD per drive, which means you will have more than one OSD on a server. On 09/11/2013 02:30 PM, Ian_M_Porter@xxxxxxxx wrote: > *Dell - Internal Use - Confidential * > > By node do you mean physical server or a running OSD instance (so could > have multiple OSDs running on a single server, each with their own drive)? > > Ian > > -----Original Message----- > From: ceph-users-bounces@xxxxxxxxxxxxxx > [mailto:ceph-users-bounces@xxxxxxxxxxxxxx] On Behalf Of Wolfgang > Hennerbichler > Sent: 11 September 2013 11:35 > To: ceph-users@xxxxxxxxxxxxxx > Subject: Re: Number of Monitors per OSDs > > On 09/11/2013 11:55 AM, Ian_M_Porter@xxxxxxxx wrote: >> *Dell - Internal Use - Confidential * > > if this is dell internal, I probabloy shouldn't answer :) > >> Hi, >> >> What’s a good rule of thumb to work out the number of monitors per >> OSDs in a cluster > > AFAIK there is no rule of thumb. I would dimension like this: > if you have a very small cluster (3 nodes) use 3 mon's. > if you have a larger cluster (30 nodes) use 5 mon's if you have a huge > cluster (500 nodes) use 7 mon's. > >> Regards >> >> Ian >> > > > > -- > http://www.wogri.com > _______________________________________________ > ceph-users mailing list > ceph-users@xxxxxxxxxxxxxx > http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com > > Dell Corporation Limited is registered in England and Wales. Company > Registration Number: 2081369 > Registered address: Dell House, The Boulevard, Cain Road, Bracknell, > Berkshire, RG12 1LF, UK. > Company details for other Dell UK entities can be found on www.dell.co.uk. > -- http://www.wogri.com _______________________________________________ ceph-users mailing list ceph-users@xxxxxxxxxxxxxx http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com
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