Ask HN: Pay-Per-Usage Remote Filesystem Mounted Locally in Linux?

Hi, I've had no luck getting any of the AWS "S3 on Linux" solutions to work right on my Linux boxes- there's always some minor detail that prevents them from working right. I've had it with Googling & trying to overcome each obstacle that presents with each option, & am looking for an alternative to S3 storage on /mnt. I see Rackspace has a solution, & I don't know anything about it since I've never used Rackspace for storage. I'm wondering what other locally-mounted remote storage options are available before I dive in & get a Rackspace account & try theirs. I would be happy with an iSCSI or NFS based storage, which I can use natively with my virtualization platform (Proxmox). If it's something I can mount locally in a VM on /mnt- that's suitable, too. Just as long as its 'Pay-Per-Usage'. What do HN readers know about that could help me? Thanks in advance, -c