Depends what problems you're looking to solve; you don't need a CoW filesystem if you just want data integrity features for example, and you don't need data int

Depends what problems you're looking to solve; you don't need a CoW filesystem if you just want data integrity features for example, and you don't need data integrity features if you're just looking for something with quick and efficient snapshots. ZFS tries to solve every filesystem problem and actually doesn't even do a terrible job at it, but it can be a bit of a beast due to its high complexity and that it doesn't integrate well with the rest of the system.