[eklitzke]

NFS can be super fast, in a past life I had to work a lot with a large distributed system of NetApp Filers (hundreds of filers located around the globe) and they have a lot of fancy logic for doing doing locale-aware caching and clustering.

That said, all of the open source NFS implementations are either missing this stuff or you'd have to implement it yourself which would be a lot of work. NetApp Filers are crazy expensive and really annoying to administer. I'm not really surprised that the cloud NFS solutions are all expensive and slow because truly *needing* NFS is a very niche thing (like do you really need `flock(2)` to work in a distributed way).

[throw0101c]

> NFS can be super fast

Modern day NFS also has RDMA transports available with some vendors. Plus perhaps have it over IB for extra speed.

[eklitzke]

Yeah if you were really trying to make things fast you'd have the compute and NFS server in the same rack connected this way. But you aren't going to get this from any cloud providers.

For read-only data (the original model is about serving file weights) you can also use iscsi. This is how packages/binaries are served to nearly all borg hosts at Google (most Borg hosts don't have any local disk whatsoever, when they need to run a given binary they mount the software image using iscsi and then I believe mlock nearly all of the elf sections).