Is Debian on the D-Link DNS-323 and Conceptronic CH3SNAS fully supported?
Debian on the D-Link DNS-323 (revision A1 and B1) and Conceptronic CH3SNAS is supported in Debian 8 (jessie). The D-Link DNS-323 revision C1 is not supported.
Please be aware that Debian 8 (jessie) was the last release to support the D-Link DNS-323 and Conceptronic CH3SNAS. These devices are not supported in Debian 9 (stretch).
Is Debian on the DNS-323 or CH3SNAS suited for people new to Linux?
No, I would not recommend you install Debian on your DNS-323 or CH3SNAS if you don't have any experience with Linux and Debian. Debian will not install a web interface through which you can control your device, so I recommend you stay with the original firmware.
Can I have both the original firmware and Debian?
No, Debian will completely replace the original firmware in flash. You have to choose between the original firmware and the Debian installation described on my pages. However, it is possible to make a small Debian system on your disk with the original firmware; see the instructions on the DNS-323 wiki.
Which devices are supported?
The D-Link DNS-323 revision A1 and B1 were supported in Debian 8 (jessie). Revision C1 is not supported. You can find the revision by looking for "H/W Ver" at the bottom of your DNS-323. In addition to the D-Link DNS-323, the Conceptronic CH3SNAS is supported.
The devices are no longer supported as of Debian 9 (stretch).
Are other D-Link models, such as the DNS-321 or DNS-325, supported?
No, only the D-Link DNS-323 is supported. I'm not planning to add support for other D-Link devices but you're welcome to contribute patches to the debian-arm list.
Is there a recovery mode?
There is no recovery mode that would allow you to load a rescue firmware image via the network. However, if you have a serial console, there is a recovery option.