The close reason I chose is:

> Questions should demonstrate reasonable business information
> technology management practices. Questions that relate to unsupported
> hardware or software platforms or unmaintained environments may not be
> suitable for Server Fault

Taking advantage of a "tech support mode" on a NAS box to install third-party software in an un-supported fashion does not classify as a reasonable business information technology practice.

In case you missed it, here's what [Code42 has to say][1]:

> Although running the CrashPlan service on a headless computer is an
> unsupported feature, this article describes a process that some users
> have found useful.

...and what [Netgear has to say][2] about usage of Tech Support mode:

> Use the tech support boot mode only when instructed to do so by a
> NETGEAR Technical Support representative.

While I understand that you are indeed doing this as part of supporting your company, hacking things together like this is not on-topic. We strive to build well-designed, well-supported, reliable systems.


  [1]: https://support.code42.com/CrashPlan/4/Configuring/Using_CrashPlan_On_A_Headless_Computer
  [2]: http://kb.netgear.com/app/answers/detail/a_id/20898/~/readynas--accessing-the-boot-menu