Hi Norman There is no fixed percentage for that. If you mix slow and fast OSD in a PG, the overall performance of the pool will be affected by the slower devices. This is the same reason as you will not mix SSD and HDD OSD in a pool. If the performance difference between OSD is small, it will be OK to mix. It is also the same recommendation if you mix different performances of any x86 servers. Best regards, Aaron _______________________________________________ ceph-users mailing list -- ceph-users@xxxxxxx To unsubscribe send an email to ceph-users-leave@xxxxxxx
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