I hate to see new spend on SATA/SAS SSDs, since those interfaces are progressively disappearing from product roadmaps. I would take 4-6 NVMe nodes any day.
Depending on what you are serving, nodes without much storage can be useful for running mons, managers, RGWs, prometheus / grafana, etc. > On Dec 16, 2025, at 4:36 PM, Andrew Klaassen <[email protected]> wrote: > > On Tuesday, December 16, 2025 at 04:17:19 p.m. EST, Anthony D'Atri > <[email protected]> wrote: > > > PLP is crucial, but there are other factors. If you have a choice, NVMe > > SSDs give a lot more bang for the buck than SATA. The Kingstons > > don't have IIRC stellar performance, but maybe you don't need it to be. > > The potentially free render nodes don't have NVMe slots, so buying nodes for > that would unfortunately would immediately raise the capital budget by quite > a bit. > > ...although we do have a smaller number of nodes with 4-6 NVMe slots each. So > then the question becomes: 8-24 nodes with 1-3 SSDs each, or 4-6 nodes with > 4-6 NVMe drives each? > > > Those chassis can even only have their server trays partly populated > > too. Were you to have 8 chassis, you could make `chassis` your > > CRUSH failure domain, with however many drives per chassis/host. > > I did look into that, but unfortunately 4-6 chassis is probably the most I > can reasonably make the case for. > > Andrew > _______________________________________________ ceph-users mailing list -- [email protected] To unsubscribe send an email to [email protected]
