If you're in the market for an external hard-drive caddy there are plenty to choose from. Will you go for USB or Firewire, or perhaps ethernet or even WiFi connections? What about the IDE versus SATA ...

I'm just migrating to two 3tb drives for my data, robocopying now. In terms of the second drive for backup, is there any disadvantages to getting a hot swap drive bay instead of a drive caddy? By ...