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@Wido Den Hollander 

Still think this is acceptable?

 51   hdd 9.09470  1.00000 9.1 TiB 6.1 TiB 6.1 TiB  72 KiB  16 GiB 3.0 TiB 67.23 0.98  68     up
 52   hdd 9.09470  1.00000 9.1 TiB 6.7 TiB 6.7 TiB 3.5 MiB  18 GiB 2.4 TiB 73.99 1.08  75     up
 53   hdd 9.09470  1.00000 9.1 TiB 8.0 TiB 7.9 TiB 102 KiB  21 GiB 1.1 TiB 87.49 1.27  88     up


If I use replica 3 and then my pool almost is full because a single OSD is at 85%+ while others are <70..then in the end I maybe get 25% of my disk storage.

Difference of 20 PGs between 2 OSD does not seem acceptable. Not with fillrates that are equally different
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