Hi Eugen, thank you for your contribution. I will definitvely think about leaving a number of spare hosts, very good point. My main problem remains the Health Warning of "Too few PGs". This implies that my PG Number in the pool is too low and i cant increase it with an erasure profile. I also tried Autoscaling the PGs (which showed a higher pg_num as target) or setting a minimum number of PGs in the pool (above 1024), but the result was always a hardlimit of 1024. --- Original Nachricht --- Betreff: [ceph-users] Re: Erasure Profile Pool caps at pg_num 1024 Von: "Eugen Block" An: ceph-users@ceph.io Datum: 17-02-2020 08:51 Hi, with EC you need to take into account the total number of chunks for PG calculation. Given your 16348 target, devide that number by 12 (if I'm reading your crush rule correctly) results in 1362, this would be either 1024 or 2048 PGs for that pool. By the way, I wouldn't recommend to use all 12 hosts for your EC profile since that would mean a degraded cluster as soon as one host fails. You should consider one or two spare nodes so the PGs can be recovered in case one node fails. Regards, Eugen