Pros: Good-looking and quiet. Drives seat well and stay in without mounting screws. JBOD or spanned mode works well. Drives stay cooler than other solutions I've tried (case is well ventilated on front and sides, and the big fan pulls the air out the back). Front LED changes color when a drive is being used. Front power button is handy, and must be held for 3 seconds to turn unit off. No power brick -- transformer is built into the case. Thumbscrews make it easy to remove cover if you need to do so; I just insert the drives and run then without mounting screws, so I don't remove the cover, I just get to everything via the front door. No software required for JBOD or spanning, it all just works. I haven't had to use tech support since I bought it, but they answered pre-sales questions admirably quickly. The unit itself is just a simple box, but is glossy black, and the vent perforations in the front door and side panels are very small.

Cons: 2 TB limit on spanned drives (limitation of the on-board controller, as it's mentioned in the manual), and you can only make 1 volume per drive set, so leftover drive real estate must go wasted. Drives go in and seat fine, but are difficult to remove, because the drives are close enough together that a hand can't get a good hold -- I've tried using pliers, which scratched up my drive fronts, and am now using a screwdriver that I bent to a 90-degree L on the end that fits nicely in an hole in the bottom front of my Seagate drives… removing the cover and using the provided drive mount thumbscrews would obviate this problem. Manual suffers from translation difficulties, but everything is easy to do. DIP switches that control spanning and power modes are inset and thus well-protected, but hard to get at unless you turn the unit around (as with all such switches; but I'd prefer to have these on the front). Fan has blue light that might be annoying in a darkened room.

Overall Review: I'm using this enclosure and Backup Exec's Backup-To-Disk option to back up several of my department's servers, and it works very well. I use three sets of 3 750 GB drives, and rotate drive sets once per week -- full backups on Friday, incremental backups Monday through Thursday; and I have the drives in JBOD mode, and configure the drive sets as members of the device pool, and allow two jobs to occur simultaneously (but only one job per drive), and the USB seems to handle that just fine -- I'm getting throughputs (as calculated by Backup Exec) of anywhere from 300-600 MB per minute per drive with two drives in use at the same time. Swapping spanned drive sets with the power off results in no problems, all data is retained (although I do label my drives and make sure I put them in the same position top to bottom, I'm not sure if this is important). I would by this again, or might go with the 8-drive version that allows the use of drive trays for easier drive changes.

Pros: The silent fan. no sata cables to mess with. The ability to show each drive seperately, or combine to a bulk single drive.

Cons: I should have bought another one.

Pros: It works. Welded steel tube frame inside, SOLID, yet not too heavy. It has only two DIP switches on the back for settings options: JBOD/Spanning (using spanning to create a max 2tb virtual drive). Second DIP is Power On: Normal/Auto... Auto powers the enclosure by presumably by sensing power from USB, powering up the enclosure only when your computer is on.

Cons: Its a bit difficult to unplug / slide drives out (other than the top drive). The tray-less design gives you nothing to grab on to, and the space between the drives is too small for my fat fingers. Someone could probably come up with some (a loop of string around each drive, for example) to make this easier.

Overall Review: Tried it with Hitachi 1tb, seagate 1.5tb, 4-6tb in one enclosure. At 480mb it'll take you quite a few days to fill this with constant transfer.

Pros: very quiet and keeps the hard drives nice and cool, data access to 4 hard drives with one usb cable really is great

Cons: 2tb limit per volume

Overall Review: i use this to play hd mkv's on my popcorn hour and it plays perfectly

Pros: Does exactly what it should. Easy set-up, although like others said, the spacing does get a little tight. Wish the price was lower, but it is fair for the product.

Cons: Wish someone had posted that the board has SATA data and power available. Not an issue because I figured it probablly would, but it would have been nice to see this listed in the specs somewhere, or even just a close up shot of the board.

Overall Review: Wish I had waited 2-3 days and got the eSATA version when it went on sale for about 50$ less than what I paid...

Pros: This is the second unit I have bought. It sits on my home server running CentOS 5.4 and via samba serves all the OC's in my house. I have a lot of old VHS home videos (about 60 total partially converted) . For long term storage these units cannot be beat. Feature where disks are powered down has an added plus. I simply use as JBOD. Streaming video once stored is flawless and I have tested streaming to three different PC's via my server without a hiccup. Note that I do maintain a 1GB internal network

Cons: none

Pros: 1.) Simple. 2.) Stylish. 3.) Stays cool. 4.) More affordable. 5.) Works.

Cons: 1.) Slower than other servers due to it being USB. 2.) Quick installation guide isn't clear enough on certain technical issues.

Overall Review: 1.) Best used as a backup device. 2.) You don't just plug-in and go necessarily. I use Windows Vista 64, and I had to do an extra step (s). The CD that comes with this device explains this well enough. Put your CD manual into the computer, select your server model, and click on the "detailed user's manual". The information you need starts on page 22 or so if you're using Vista. Also, make sure that the voltage switch on the back of the server is set properly before you start using it. It's 115 for America and Japan; it's 230 for the UK. An improper setting will very likely damage the server.

Pros: Very nicely priced, Doesnt overheat the drives much, 4 Drives with two (power and USB) cables. Everything i want/need in one.

Cons: Newegg needs to have more sales on Western Digital 750gb drives

Overall Review: Has a 2TB limit but i plugged in three Western Digital 750gb drives and all three are running at 689GB a lil over two terabytes but i'm surprised it's working this well. Plan to buy another one and a few more drives within the next 6 months