1. Can you configure it to make backups?
2. Can you configure it to replace data with low latency?
3. If you have multiple, can they work together to increase availability or data durability?
1. Making backups is really easy - the most simple way is a USB backup, additionally: offsite encrypted and using a second unit to be synched and ready as a cold standby unit.
2. not sure what you mean by that.
3. we're working on this - currently only the synching and cold standby scenario works and is often used by our customers.