Any good alternatives?
A lot of them actually. Ceph personally I've used. But there's a ton, some open source, some paid. Backblaze has a product Buckets or something. Dell powerscale. Cloudian has one. Nutanix has one.
`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...