Quoting Uwe Kleine-König <u...@kleine-koenig.org>:
If the concerns are mostly about the hardware not being rackable, there is a rackable NAS by Netgear:
This seems to be out of stock and discontinued, unfortunately. Anyway, I'm relatively sure, that I can convince my boss to sponsor/donate both armel and armhf hardware for Debian, if that is of any help. Or arm64 used in "32 bits mode".