Finally got around to buying keys and playing with this. So far I'm not having much luck. I'm thinking 1gb isn't enough ram for 3tb disks. Finder, explorer, teracopy and even mc locally all die horribly trying to manipulate files. There are no hints to any issue in the syslog so I'm pretty much guessing until the parity check finishes but the issue seems to be limited to the 3tb drive I have in there. Smart reports are also clean.