Summary: 11/19 UPDATE After some trial and error and finding a tech agent who understood apple products I can now report that I am very pleased with this product. It is doing exactly what I wanted it to do and I've upped the rating to 5 stars from 3. I've been able to copy my entire itunes library to the unit. I also have both mine and my wife's macbook's backing up with Time Machine directly to the unit. The bugs I was having with the web access have also been resolved.
Summary: If you are not comfortable with looking up arcane data in FAQs, help sections, online forums, this may not be the NAS you are looking for. I have 2 x 4tb cool spins in my first NAS, works on my androids and TVs. This new NAS has 1 x 4tb greendrive, and it serves media well, albeit on a separate network. My two NAS are not on the same network. Just set up and test for the second NAS alone, was non-trivial.
Pros: Hard to beat 2 bay NAS pricepoint. My first LS421DE has been up and serving trouble free over a year. This is my second one. It works well over my Win network and also my DLNA portables, TV, and blueray.
Cons: The provided NAS Navigator software for device set up and administration could be a bit easier to use. Not a deal - killer, It is workable.
Well Worth it for the price once firmware updated.
Mr. P. Baker, Amazon
16 October 2014
Summary: For the price ,you get a fairly good unit., the unit itself is fairly small with an outer case made of plastic , it still feels fairly sturdy apart from the front panel which flexes a little , but then once installed it's normally hidden away and almost never touched again , so not really an issue. So far in operation it is whisper quiet. I had no issues installing my 2 new 1.5 TB WD red drives , the install and format went flawlessly if a little slow.
Excerpt: Only issue I had was viewing the directories and folders from ie. But used shortcuts that I dragged into the root folder as a work around. USB drive worked as advertised too. Not like the older Buffalo LS-120 I have that the USB drive is not found by Buffalo Liknstation.
Summary: Been with this for about 6 months now, and still loving it. I stream all my media from it, save all my documents to it. At the time I am using the usb device server function for my laser printer and it is working nicely. I recommend this highly.