Buffalo TeraStation 3400 4-Drive 12 TB Desktop NAS for Small Business (TS3400D1204)

Good unit, but not great in my experience. FIRST: The unit ended up failing and I had to completely rebuild (which took it about 40 hours or so... I can't recall exactly). SECOND: !!!EDIT>>> I'll take Buffalo's word (below) that this will do RAID 6, which is what I wanted. Apparently my mistake, yet I did not see how to do that when I had to rebuild. THIRD: I was VERY unhappy that I had no way to copy a file to/from a USB drive. I had to copy an ENTIRE FOLDER. So I'm stuck using a computer to copy an individual file (to make it offline). Had this unit offered a copy from within the web interface, that copy would have gone MUCH faster. I expected more from Buffalo, so I'm disappointed.6/8/2016: EDIT... Buffalo (below) corrected me that this will do RAID 6 and I have no reason to doubt that, so I've changed my text and added one star.

Excelent product, excelent price.

I had an older model of TerraStation and am going through a replacement process of a failed hard drive (Fortunately, I used RAID 1). This Seagate Barracuda hard drive failed within 3 years. It was actually used in the "on" state for less than one year.In order to make a few bucks on replacement hard drives, Buffalo provides no information on the the hard drives and have warranty tags on the screws of the hard drive. I fail to understand the value of this business practice, other than to piss-off customers.Hard drives, change very rapidly. By the time a hard drive fails, it is impossible to find an exact match. Instead of beating around the bush about hard drives, they need to provide clear and open information about their drives and how to replace it with newer (larger) drives. The information is generally available from non-buffalo sources. This makes the company look so 20th Century. Most of their official forums, are devoid of any participation from Buffalo employees and many customer questions go unanswered.My next storage system will be self-assembled (Personal sub $1K budget). I do not like any of the products available on the market at this time: Most cannot even get the correct power cable, their power connections -- layer 0 -- are flimsy.Hello! -- this is not a laptop --- and they do not have backup power, to protect the hard drives from damage in case the power cables gets detached. Buffalo, did get that part right, but are still too narrow minded for me.

I have had a Buffalo Terastation 3400D1204 for a couple of years now and I would not recommend it to anyone.It is an expensive piece of crap that comes with the wrong type of hard drives installed. Specifically, it comes with hard drives that are rated for basic desktop use even though the unit is advertised as using the appropriate NAS-rated hard drives.Because of this, you can expect the hard drives to fail way sooner than actual NAS-rated drives fail. Also, because of this, your best bet with this unit is to cut your available storage in half and configure RAID so that half the drives are mirroring the other half. At that point, you are spending a significant amount of money for a unit that will have drives fail frequently, and even when all drives are functioning, you'll only have half the space you paid for unless you choose to use the full amount of storage available and risk losing all of your data as soon as a single drive fails.There are other options of course, but all of them limit the storage or functionality of this unit all because Buffalo chooses to use cheap desktop-rated hard drives while charging for this unit as if it is fully rated for NAS use-- which is supposed to be its purpose!I very highly recommend you pass on this unit, and since owning this unit, I'm tempted to pass on all Buffalo products in general. They really dropped the ball on this one, and it was with something that should be obvious even to some tech savvy middle school children.Oh, and even if you have RAID configured so that you can lose a drive and still have access to your data, say goodbye to the web interface and any chance of being able to easily reconfigure this unit. As soon as a drive fails, this unit goes into "degraded mode" and you'll lose all access to your web portal. While not the end of the world, and while there are other means of accessing the internal settings of this unit, to put it simply this is another feature that falls short and even falls completely apart with this unit.This unit is junk. This unit is a waste of your time and money. You would have to upgrade the drives to NAS drives by buying those drives separately, and even then, the core functionality of this unit needs a lot of work and makes it feel like an awfully expensive paperweight.If you think I'm being harsh, go ahead and spend your money on this unit. I'd spend my money betting that you'll be disappointed and frustrated with the severe lack of quality and the fact that the cheap drives they include can fail so easily. What a failure on behalf of Buffalo.