Summary: I've had this unit for about two weeks now, and love it. Only problem was when installing the drives, I have 3 500GB Seagates, and 1 1TB Samsung drive. When I first installed them I put the 1 TB drive in the 4th position and it did not show up. After I swapped it with the 500GB drive in position 3 it has worked fine. Not sure of the reason why this occurred.
Pros: Easy to install drives. USB 3.0 Connection. Reasonable price for the unit, compared to other high-end units.
Cons: Installing the plate that holds the drives in place is a little tight and finicky to get locked into place. A little fiddling with it gets it set. Stays very cool, even on slow speed with 4 drives running hard.
Summary: If you plan on using eSATA, make sure your hardware supports Port Multiplier AND you have drivers for it. My Intel's ICH10 reportedly does support SATA port multipliers but on Linux only. Intel does not provide compatible Windows drivers with SATA PMP support.
Pros: - Dead simple to use after setup
Cons: Bottom drive is difficult to connect, read some other reviews with this problem as well. In my case the bottom slot's SATA receptacle was so misaligned that I had to spend 30 mins carefully disassembling back of it and unscrewing the circuit board to give it enough slack to connect the bottom disk.
Summary: I would recommend for USB3.0 use only to someone who knows their host controller has no issues with the JMS539 chip this unit uses.
Pros: This unit comfortably houses 2x WD15EADS, 1x WD15EARS, and 1x WD30EZRX drives. It's a solid little tower that fits well onboard a ship. No more mess of cables from four separate externals.
Cons: This unit uses the JMicron JMS539 USB3.0 bridge chip, which causes a lot of issues with USB3.0 host controllers. I've heard of people with ASMedia controllers having intermittent connection problems over USB3.0; and on my own laptop which is equipped with the Renesas (NEC) USB 3.0 controller, I see the same issues.
Summary: Bought it to hook up to my media player. Easy set up, taking no more than 5 minutes and it works like a charm. Great design and its operation is almost fool proof. Unit turns itself off as expected when I power off the media player, very convenient. At this price point, you can't go wrong with this although the fan is a little too noisy to my liking.
Pros: Seems solid and nicely made. Quick and easy to setup. I've set it up as a software RAID5 under Linux and it seems good so far.
Cons: I'd like the drives to be more securely guided in the make the SATA connection. They're loose inside the enclosure until the sockets connect, which takes some finagling. Once they're plugged in and the cover place is back on they seem quite secure.
Summary: For both the Renesas and Etron USB Drivers (adapters and Mobo versions - I think both are NEC chipsets) , you MUST have latest drivers. If your MOBO board not up to speed, get driver from Etron or Renesas websites. We did that until Gigabyte Mobo driver was up to correct version. The Renesas must be 220.127.116.11 MINIMUM and Etron must be 18.104.22.168. NO LOWER - or you WILL have problems and possibly disconnect randomly.
Pros: We have 1 to 4 of these on 4 servers. We have a BUNCH of them. We tested them thoroughly before buying more than 2. We like them. We also like single voltage 12VDC power supply (see Other Thoughts). PS runs warm, but not hot at all. Good Cooling Fan system - variable speed. Transfer is much faster than USB 2.0 via USB 3.0 interface. Drives are easy to install and lock tightly in place with metal plate with rubber cushion behind them (no loose connections). We are gett...
Cons: Units initially disconnected on their own, then reconnected (Win Server 2008 asked if we wanted to reformat - No You Dummy OS!). But it was NOT the unit or its JMicron controller. It was USB drivers on both motherboard and plug in USB 3.0 adapters we bought. See OTHER THOUGHTS. We tested 4 different adapters.