I've been looking at microceph, but the requirement to run 3 OSDs on loopback files plus this comment from the docs gives me pause:

`Be wary that an OSD, whether based on a physical device or a file, is resource intensive.`

Can anyone quantify "resource intensive" here? Is it "takes an entire Raspberry Pi to run the minimum set" or is it "takes 4 cores per OSD"?

Edit: This is the specific doc page https://canonical-microceph.readthedocs-hosted.com/stable/ho...