Excerpt: I had to replace my old Thecus N5200 when it died, and the N5550 seems to be a significant step up. Unfortunately, the method used to store the data on the disks has changed, so I was unable to simply insert my old drives and have all the data available. Luckily, I had a full backup on another external drive that I copied over to the N5550 after I formatted the 5 drives and created a RAID. This NAS is much faster than the old one.
Pros: Easily Expanded, Easy To Set Up, Fast, Reliable
The WD Red NAS drives (3TB) worked fine. Setup was easy and the integration ability with ...
IT Guy, Amazon
28 January 2015
Summary: I purchased two for off-site server backups based on the price and other reviews. The WD Red NAS drives (3TB) worked fine. Setup was easy and the integration ability with Active Directory made the ACL use perfect. Using the LED and buttons on the front were not intuitive to me. Using the web interface made setup easy and fast. I did have one silly problem with the N5550 losing connection to AD randomly and realized I made a stupid mistake in setup.
Summary: I had several issues initially with the unit. The support staff at Thecus was okay, which in an industry that has systemic horrible to non-existent customer support is actually way better than average. Trouble shooting required a RMA return to the company's California facility and they turned it around very quickly, no complaints but all issues were not resolved. It turned out that the main problem was a defective memory module which Thecus supplied and I installed.
Summary: I've owed this NAS for a little over a year and couldn't be happier. I particularly like ability to only load the modules you want/need. I get almost full Gig-E transfers (120Mbps) with only a single cable connected. I'm running a blend of 2Tb WD Red's and Toshiba HDDs. I use it as a both a NAS and media server, and easily playback videos directly to my HDTV.
Pros: Fast, reliable, many useful features and only load the ones you want, quiet.
Cons: Bonded network link is slower than single link. (75Mbps vs 120Mbps)