So I'd guess EBS is nothing more than ISCSI targets then. ZFS won't do anything to make those usable on multiple machines at once. ZFS does make it easy to mir

So I'd guess EBS is nothing more than ISCSI targets then. ZFS won't do anything to make those usable on multiple machines at once. ZFS does make it easy to mirror multiple LUNs for redundancy though, so if you have a timeout or permanent disconnect from the device you remain operational. In addition detaching the device and moving it to another machine is trivial with zfs export/import commands.