I'm in the process of upgrading my home network with additional storage and would like some advice. I currently use Time Machine to back up my Mini to a usb drive. I also have an old MBP which isn't currently backed up. Most critical items are on the Mini but I would like all machines backed up. I was considering a Time Capsule or Synology DS411 Slim to back up both computers. The Synology has the advantage of being a raid and provides a lot of NAS functionality. I already have a couple of AEBS so I don't need the wireless functionality of the TC. I was also looking at a 5 drive enclosure to hook up to my mini to expand its storage. This could also be set up in raid 5 configuration. Is it overkill to have a raid 5 setup on a time machine drive or to have a time machine backup of a raid 5 usb drive? The likelihood of having both the primary drive and time machine drive fail at the same time seems very remote. Thanks.