One of our SCv2080s recently experienced two rebuilds in a short period of time, each took about two days to complete (8T NLSAS). I understand one of the new features of SCOS 7.3 is the new hot spare strategy, if there's any hot spare at all. I wonder how much that will increase rebuild speed and if that comes at a cost? Is usable space gonna remain the same when upgrading from 7.1 to 7.3?