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...

Ceph is awesome for software defined storage where you have multiple storage nodes and multiple storage devices on each. It's way too heavy and resource intensive for a single machine with loopback devices.

ceph depends a lot on your use case

minio was also suited for some smaller use cases (e.g. running a partial S3 compatible storage for integration tests). Ceph isn't really good for it.

But if you ran large minio clusters in production ceph might be a very good alternative.

If you just need a s3 endpoint for some services lookup garage