Summary: It is rare that you buy a product these days and a year later are still being impressed with it. Top notch equipment mixed with excellent software that keeps getting updated and improving. I had bought one of their DS111 a long time ago after reading all it claimed to do and the good reviews. To my surprise it was even better than I thought. The constant updates and features are what keeps the product a great deal long after the initial purchase.
Summary: I have owned this now for about one year and it is awesome. I have owned other NAS devices in the past and this is by far the fastest and most versatile. It is also really quiet. The only complaint that I have is the app that they provide to record cameras. You can only record one camera for free. You have to pay to control more than one. All of the other apps are free.
Summary: Excellent network attached storage (NAS) and a whole lot more. I use with 5 WD Red 3 TB hard drives. Works great for local file storage, video surveillance, and remote file access, I've not experienced any of the failures others have mentioned and the unit has had power cycled several times and has currently been powered up 180 days.
Summary: It's one of the greatest investment made for my home digital storage, file sharing, media center, mobile access/support...etc. I'm working in IT field for over 15 years and I can assure you that this product not only has great quality and reliablility, and it can many great features to explore. For example, it has Windows interface over the web browser for easy management.
Summary: I do not use a lot of the features in this unit, but for a good home NAS with a lot of redundancy options, it works quite well. Just be sure you understand how you want this device configured and understand what all of the options mean. Once you get 6TB stored on here, it is hard to change the configuration. This is a pricey device, but it seems to be worth the money to me.
Summary: Being somewhat unfamiliar with using NAS systems before, we spent months researching different NAS brands such as Drobo, ReadyNAS (Netgear), LinkStation (Buffalo), Seagate, and a few other that we found but have never heard of. After countless reviews, forum threads, magazine articles and YouTube videos, we finally settled on the Synology DiskStation and have never looked back.
Summary: I've been a NAS user for more years than I care to admit... This Synology line is a bit on the higher end, and in this case you get what you pay for. I love these devices. The only CON I have for the product is when they undergo a major firmware revision, there have been some horror stories and the customer support (and firm website) are overloaded. If you can discipline yourself not to be an early adopter, you'll love the device.
Summary: This has worked flawlessly since I purchased it. Setup was a breeze and backing up my Macbook Pro via Time Machine has worked perfectly. File transfer speeds over wired and wireless have been extremely fast. I have yet to fully use all of the features but this is definitely scalable. The only downside is the cost especially when you factor in purchasing the drives. But after using it I couldn't be more happier.