On Fri, Dec 13, 2019 at 11:49:50PM +0100, Oscar Segarra wrote: > Hi, > I have recently started working with Ceph Nautilus release and I have > realized that you have to start working with LVM to create OSD instead > of the "old fashioned" ceph-disk. > In terms of performance and best practices, as far as I must use LVM I > can create volume groups that joins or extends two or more physical > disks. In this scenario (many disks for server) where ceph-volume is > manatory, It still remains the rule of one OSD for each physical > device? or I can reduce the number of OSDs? That is hard to answer generically. ceph-volume will not create multi-disk volumes. One disk, one OSD is still the recommendation afaik. However there are certainly scenarios where multi-disk OSDs are sensible. For example if you have a machine that has _a lot_ of disks attached but lacks CPU and RAM to run as many OSDs as disks, it can make sense to deploy one OSD on multiple disks. > Thanks in advance, > Óscar >_______________________________________________ >ceph-users mailing list >ceph-users@xxxxxxxxxxxxxx >http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com _______________________________________________ ceph-users mailing list -- ceph-users@xxxxxxx To unsubscribe send an email to ceph-users-leave@xxxxxxx
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