Summary: A very good and giving system. I also had a hp ex495 and hp gave me the run around about a install disc and still sitting in garage. The dlink has served me well ! I recomend it to all looking for a nas system.
Summary: I bought mine used with the latest firmware installed. I am also surprized at the bad reviews of this unit. I got the unit, I set it up within 20 minutes and had my drives partitioned and running within the hour. I use it purely for a network redundant storage unit for backup of our desktops and all of my website software.
Summary: I have used a Drobo, a Patriot memory media NAS, and then the D-Link DNS-343. Without a doubt this has been the most reliable unit thus far. I had issues prior with the other units hanging up while trying to stream media from it. I'm using a gigabit router with thick heavy cables, and the computer is hard wired running gigabit too, and each of the other units would just hang. This unit streams flawlessly! I currently have 4 3TB HDD's which it actually doesn't like.
Summary: I needed a NAS that could accommodate 4 SATA drives. This enclosure was priced just right, and online reviews praised its ease of use and flexibility. I have been using this NAS for the past 6 months and have experienced no downtime at all. The initial setup could not be simpler and the integrated OLED display shows you everything you need to know at a glance. This thing is built like a tank.
Summary: I purchased this when it went on sale for $200. I was pleasantly surprised that the firmware was up-to-date. I chose to do a manual install/configuration of the DNS-343 and skipped the disk install completely. I plugged in the NAS box to my router, and I used Firefox to connect and administer the device online (set up the login and passwords). I had the DNS343 up and running in less than 5 minutes. I started to load the bays with HDs.
Summary: I am posting this update to my original post to provide some insight into long term ownership of this device.
Pros: I have had this device for over two years and have not experienced any of the problems that some of the users seem to be having. There are no problems with overheating (filling volumes with 1TB truecrypt containers). It is a great NAS from my perspective and would buy again.
Cons: I don't like that the OLED flashes "drive full" when one of the hard drives is 95% full. I would like to be able to turn that off to avoid the annoying flash.
Summary: I purchased this device under a good impression of DNS-323. So far, there is no disappointment at all. It works right out of the box. It took me 15 minutes to install 4 x 2Tb WD Green into it and configured it (RAID 5, IP, e-mail, access for 3 persons)through web interface - no software requires to install.
Summary: I have bought 2 of these and they work without problems... both have 4x Seagate 1.5TB 7200.11, each NAS has a single partition of RAID5. The NAS shuts down the drives when idle, this is very good but I guess all NAS do this. The speed is not very high while transfering files to them (generally 12MB/s), but for me the most important is streaming videos at a good reasonable speed, even blu ray at 1080p stored there works without problems through a gigabit network.