The real issue is that you can't do a file-level backup with iscsi volumes on the target side because the target-side is supposed to be filesystem agnostic. Now, any client systems that have the iscsi volumes mounted can perform a file-level backup. So, we have a red hat system rsync the files on the iscsi volumes over to an Open-E NAS, and from there we use the built-in "data replication" feature to replicate to another open-e nas at an off-site location. We could actually just rsync the files directly from the red hat system to our off-site NAS, since the "data replication" is just a webgui-ified rsync implementation.