But I use the Time Capsule (TC) for data storage (It is ment for!)
How can I recover the data without having to open the TC and losing the warranty?
If that isn't possible, what is the best alternative?
Sadly Apple might say you can store data on it.. but they unlike a true NAS manufacturer have no way to recover files and they do not support access to the TC. Once it is dead that is it.. it is a throw away item as far as they are concerned. And you were always supposed to backup your data although Apple provided no way for you to do that.
You have no choice but to open the TC and pull the hard disk.
But you can do it very neatly. Follow the instructions here.
http://www.ifixit.com/Device/Apple_Time_Capsule
Particularly use plenty of heat to loosen the glue holding the rubber base mat so you do not tear it.
You can then put it neatly back together with no one the wiser.
Put the disk in a USB holder, that is suitable.. this can be bought fairly cheaply.. $20-30 should get you one.. but be careful if you have a 3TB as the older USB2 only handle 2TB. I recommend people phone a seller like OWC who do Mac stuff and can ship quickly a good solution that is known to work.