Hello @MathieuRA , @florent
Moving the discussion to this thread as it seems to be tackling the same issue: https://xcp-ng.org/forum/topic/11892/xoa-memory-usage/28?_=1776334896974
I reported my findings so far over there
Best regards
Different use cases: Ceph is better with more hosts (at least 6 or 7 minimum) while XOSTOR is better between 3 to 7/8.
We might have better Ceph support in the future for large clusters.