But when the stakes are anything to which you want to rely on can, then please look no further.
The problem of the Raspberry PI is that practically at every power failure "from". In other words, Storm again, gateway no longer boots. The card can be indeed re-record, but reliably different. If the unit was not shut down properly (eg Storm away) is a great chance the filesystem over. To fsck the device is no longer.
Already clear: the equipment was never intended for "High Availability". But that it is not is a failure Storm pity. So, if the intended use is anything where the current could turn and can be booted by the device without greater commitment again, then the Raspberry is the wrong tool for that.
For crafting and so, certainly good. For anything productive - risky.
Alternatives: Mini-PCs like Intel NUCs, Synology DiskStation. Costs Unfortunately the triple, no I / O pins, but when it comes to any server (eg openVPN or so to get into the home network from outside) are the more reliable.
Gave away my PIs. ;)