Debian now available for QNAP NASes
QNAP and the Debian project today jointly announced the availability of Debian Lenny (version 5.0) for all QNAP ARM-based Turbo NASes.
Debian
How To Install Debian on the QNAP TS-209 Pro
Install Debian on your QNAP or other Marvell Orion based NAS and make it do what you want it to do.
Debian adds selected NAS support
The Debian installer team has announced the first release candidate of the installer for Debian 5.0 GNU/Linux (Lenny), which includes support for selected NASes based on Marvell's ARM-compatible Orion processor.