unRAID on Thecus N5550 with 6 drives

This post is specific to owners of the Thecus N5550 but will apply to almost all of the Thecus NAS lineup as well. Anyone with Thecus NAS devices knows that the operating system “ThecusOS” has been practically abandoned. The vendor came out with “OS7” but it never fully finished and development died somewhere along the way. It also did not fully support the N5550 and many other models. Owners were left with unsupported devices.

This was fine with me for a while since I never really used the management interface except when configuring or troubleshooting issues. However after a couple years now the interface is very outdated and I was looking for something more modern.

I did upgrade one of my N5550’s to “ThecusOS7”, a beta version. It was able to install and it appeared to be functional however I was unable to create a RAID volume. Which means I could not use it for much of anything. Not to mention it was clunky and the older UI actually seemed to be more functional. It was clear that OS7 was just trying to mimic Synology’s DSM, but lacked all the polish. My attempts to downgrade were unsuccessful and I had pretty much bricked the NAS.

So now what? I have three N5550’s and don’t want the hardware to go to waste.

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