Re: [ovirt-users] [Gluster-users] GlusterFS performance with only one drive per host?

On Mon, Mar 19, 2018 at 5:57 PM, Jayme <jaymef(a)gmail.com&gt; wrote: > I'm spec'ing a new oVirt build using three Dell R720's w/ 256GB. I'm > considering storage options. I don't have a requirement for high amounts > of storage, I have a little over 1TB to store but want some overhead so I'm > thinking 2TB of usable space would be sufficient. > > I've been doing some research on Micron 1100 2TB ssd's and they seem to > offer a lot of value for the money. I'm considering using smaller cheaper > SSDs for boot drives and using one 2TB micron SSD in each host for a > glusterFS replica 3 setup (on the fence about using an arbiter, I like the > extra redundancy replicate 3 will give me). > > My question is, would I see a performance hit using only one drive in > each host with glusterFS or should I try to add more physical disks. Such > as 6 1TB drives instead of 3 2TB drives? >

[Adding gluster-users for inputs here] > Also one other question. I've read that gluster can only be done in > groups of three. Meaning you need 3, 6, or 9 hosts. Is this true? If I > had an operational replicate 3 glusterFS setup and wanted to add more > capacity I would have to add 3 more hosts, or is it possible for me to add > a 4th host in to the mix for extra processing power down the road? > In oVirt, we support replica 3 or replica 3 with arbiter (where one of the 3 bricks is a low storage arbiter brick). To expand storage, you would need to add in multiples of 3 bricks. However if you only want to expand compute capacity in your HC environment, you can add a 4th node. > Thanks! > > > _______________________________________________ > Users mailing list > Users(a)ovirt.org > http://lists.ovirt.org/mailman/listinfo/users > > _______________________________________________ Gluster-users mailing list Gluster-users(a)gluster.org http://lists.gluster.org/mailman/listinfo/gluster-users