- You can definitely hear the disks spin up and access. It also sounds like there's a fan in there, but there are no obvious vents for one and we can't feel any air coming out, so the drives might just be that loud.
- The top is getting quite warm during the backup -- we'll see if it cools down once we stop hitting the drive this hard, but if there really isn't a fan we're a little concerned. Hope those server-grade hard drives like being cooked.
- You can't transfer an existing Time Machine backup to Time Capsule. Sure, it's easy enough to switch back and get at your old data, but it's still a pain -- and now we have a 1TB drive sitting here with months of backups on it that we can't erase and reuse.
- Time Machine doesn't prioritize network activity on your machine, so it's slamming our network connection right now as it backs up. That's not a huge problem since we're backing up over Ethernet, but we'll see what happens when we try this over WiFi later.
- We tried to back up a second machine while the first was in progress, and not much happened -- it created the disk image and got to "Preparing..." and then did nothing. We're assuming these can only happen one at a time.
- The wireless side of things is basically the same as the Airport Extreme, nothing shocking there, although the setup assistant has been substantially revised to make things easier.
- The setup assistant now asks if you already have a 2.4GHz network and offers to create a 5GHz secondary network, which is interesting.
That's about it for now -- there's not much we can try out while this backup is in progress. Anything else you guys want to know?