Thanks. Shall I mount /var/lib/ceph/mon on the SSD device, or by updating the "mon data" ? Seems not recommended to change the default data location. We're going to try ceph ansible. Shall we first set up the cluster, then move /var/lib/ceph/mon to SSD devices on all MON ? Thanks. /st wong -----Original Message----- From: Wido den Hollander <wido@xxxxxxxx> Sent: Tuesday, October 16, 2018 1:59 AM To: solarflow99 <solarflow99@xxxxxxxxx>; ST Wong (ITSC) <ST@xxxxxxxxxxxxxxxx> Cc: ceph-users@xxxxxxxxxxxxxx Subject: Re: SSD for MON/MGR/MDS On 10/15/2018 07:50 PM, solarflow99 wrote: > I think the answer is, yes. I'm pretty sure only the OSDs require > very long life enterprise grade SSDs > Yes and No. Please use reliable Datacenter Grade SSDs for your MON databases. Something like 200GB is more then enough in your MON servers. Wido > On Mon, Oct 15, 2018 at 4:16 AM ST Wong (ITSC) <ST@xxxxxxxxxxxxxxxx > <mailto:ST@xxxxxxxxxxxxxxxx>> wrote: > > Hi all,____ > > __ __ > > We’ve got some servers with some small size SSD but no hard disks > other than system disks. While they’re not suitable for OSD, will > the SSD be useful for running MON/MGR/MDS?____ > > __ __ > > Thanks a lot.____ > > Regards,____ > > /st wong____ > > _______________________________________________ > ceph-users mailing list > ceph-users@xxxxxxxxxxxxxx <mailto:ceph-users@xxxxxxxxxxxxxx> > http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com > > > > _______________________________________________ > ceph-users mailing list > ceph-users@xxxxxxxxxxxxxx > http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com > _______________________________________________ ceph-users mailing list ceph-users@xxxxxxxxxxxxxx http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com
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