OSD node sizes

A common approach when designing nodes for use with Ceph is to pick a large capacity server, which contains large numbers of disks slots. In certain designs, this may be a good choice, but for most scenarios with Ceph, smaller nodes are more preferable. To decide on the number of disks each node in your Ceph cluster should contain, there are a number of things you should consider, some of the main considerations are listed as follows.