Can I deploy difference OSD number per node?

[raytracy]

I have 3 node difference type of host and disk number in hands, I am wondering can I build ceph with them? Here is what I get:

node 1: 2TB 2.5" 7.2K SATA disk x 10
node 2: 6TB 2.5" 7.2K SATA disk x 4
node 3: 1TB 2.5" 7.2K STAT disk x 20

In case if I don't care about performance and recovery overhead but wish to maximize all disk capacity, can I build a ceph cluster with these hardware with native PVE tools? (without customize CRUSH Map manually)

 

[wolfgang]

Hi,

yes, you can use different disk size on a node, but keep in mind the lager disk have to write more data.

can I build a ceph cluster with these hardware with native PVE tools?

yes

The point with the different count of osd in a 3node cluster is possible but will not increase your storage amount.
The problem is in a three node cluster you have with the recommended size 3/2
the same data on all nodes so the smallest node will limitate the other nodes.