Web GUI is important
I should know, I have been struggling with the Thecus N2200Plus for about a year. From the look of it the N2200EVO uses the same GUI. On the N2200Plus half the icons don't work. Until the recent firmware update on some pages there were more data fields than screen space and no horizontal scrolling bar. The fixed this in the latest release by shrinking the fields so you can only some of the text.
The GUI also takes ages to load. There is a heart-stopping moment when you click on the RAID icon to view the raid array. You get a pop-up box saying 'Please Wait' and a about a minute later the display is refreshed with all the column heading but no RAID array information. After a while another pop-up box appears with 'Please Wait' and then the raid array information is finally revealed.
There's lots of other issues with the N2200Plus but I won't go into them here. Suffice it to say that it has just corrupted the file system for the third and last time. I'm hoping that Thecus tech support can recover the data again. Either way it is going to be replaced with the Synology DS212j.
After my experiences with the Thecus product I really don't rate them as a company. The documentation for the product contains errors, the product has lots of known bugs, firmware updates are infrequent and don't have release notes. The best one was releasing a beta firmware - v3.02.00.9 - to users who were experiencing a particular bug. The next official release after the beta was v3.02.00.8 with no way for beta users to downgrade.
However, I take my hat off to the european Thecus Tech support guys (2 of them I think). They have always been helpful and polite. Its just a shame it is such a crap product.