Thank you very much Strahil, very helpful. As always. So I would equip the 3rd server and alocate one small ( 120 - 240gb) consumer grade ssd for each of the gluster volume, and at volume creation, to specify the small ssds as the 3rd brick. Do it make sense ? Thank you !
On Wed, Apr 24, 2019, 18:10 Strahil <[email protected]> wrote: > I think 2 small ssds (raid 1 mdadm) can do the job better as ssds have > lower latencies .You can use them both for OS (minimum needed is 60 GB) and > the rest will be plenty for an arbiter. > By the way, if you plan using gluster snapshots - use thin LVM for the > brick. > > Best Regards, > Strahil Nikolov > On Apr 24, 2019 16:20, Leo David <[email protected]> wrote: > > Hello Everyone, > I need to look into adding some enterprise grade sas disks ( both ssd > and spinning ), and since the prices are not too low, I would like to > benefit of replica 3 arbitrated. > Therefore, I intend to buy some smaller disks for use them as arbiter > brick. > My question is, what performance ( regarding iops, througput ) the > arbiter disks need to be. Should they be at least the same as the real data > disks ? > Knowing that they only keep metadata, I am thinking that will not be so > much pressure on the arbiters. > Any thoughts? > > Thank you ! > > > -- > Best regards, Leo David > >
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