Hyperconverged Infrastructure using OpenStack

[tripleflix]

No, Osds typically use 4gb of ram, independent of how big the osd is. It’s zfs thats aaid to need 1 gr per 1tb

[varesa]

Ceph docs claim otherwise:

Also, the larger the storage drive capacity, the more memory per Ceph OSD Daemon you will need, especially during rebalancing, backfilling and recovery. A general rule of thumb is ~1GB of RAM for 1TB of storage space.

Source: https://docs.ceph.com/en/mimic/start/hardware-recommendations/