Summary: Synology makes great, solid products. Yes, it's overpriced. If this were half the price I'd give it 5 stars. But, I now have 20 TB of at-home storage with 2-disk failure fault tolerance. I upgraded from a QNAP NAS a few years ago and have never regretted the switch. And I'd buy it again.
**DO NOT BUY THIS PRODUCT** EASILY HACKED AND EXPLOITED FOR RANSOM
D. Wendling, Amazon
16 August 2014
Summary: **DO NOT BUY THIS PRODUCT** EASILY HACKED AND EXPLOITED FOR RANSOM GOOGLE: SYNOLOLOCKER Or simply go to the synology page: http://www.synology.com/en-us/company/news/article/470 Synology was also hacked earlier in the year for a BITMINING MALWARE turning your disk station into a bot. http://forum.synology.com/enu/viewtopic.php?f=19&t=80857 They are currently holding my entire archive ransom and Synology cant do a thing about it.
Summary: Attached this unit to my 1513+ and the Synology software walked me through the setup. This unit, in addition to the 1513+ now gives me the capability of 35Tb of data storage. Great for small business and heavy media/graphics users.
Great product but not great experience because of other reasons...see below.
12 March 2014
Summary: This is a tough one. I have a Synology DS1812+ and bought the DX513 as an expansion unit. There was no problem with the unit BUT its was NOT the same design as my DS1812+ (that I bought just 4 months ago)...there are some small and very annoying variations. The chassis did not match identically (size-wise and some of the design elements - LEDs, etc.).
Four of five bays not detecting drives - required a DSM update on DS1511+
7 February 2014
Summary: I am updating this review after identifying a fix. When the exchange unit arrived with exactly the same problem (four out of five bays do not work), I decided to search for firmware update for, not the DX513, but the DS1511+ that the DX513 is connected to. The tech support at Synology apparently does know their own product. It seems that the real issue is that the DSM on DS1511+ needs to be updated from its 2011 version 3+ to the current 4.
No-Brainer if You Have A Compatible Synology Device
Jason P., Newegg
10 December 2013
Summary: If you have a compatible device that's full, then this is a no-brainer. Yes, it may be expensive if you consider it to be just another set of slots and a power cord, but that's selling the architecture short. Synology is tops for SMB NAS--features, performance, and usability. Price, not so much, but if you're looking to save money, you're not looking at Synology devices anyway.
Great Way to Expand the Primary Server Storage Capability
Jim M., Amazon
8 October 2013
Summary: A great way to expand your Synology system; however, the way Synology expands the server size, it takes a long time (days) to bring the expansion unit on-line. There are also known issues that can cause an expansion failure. Luckily, the failure doesn't affect the data one already has on the main server - one just has to start over on adding the expansion unit to the primary server. It was a bit frustrating, but still worth five stars once it is up and running.