Summary: We own a couple Buffalo rackmount Terastations. We primarily use these for storing documents and data. We have them setup to mirror each other. We have not had any problems with them thus far and one of them we have owned one of them for a couple of years now.
Summary: I bought this TeraStation to use as a network backup device for my domain controller / file server at home (yeah, I'm a geek - I maintain SOHO level stuff at home to keep my sysadmin skills from getting dusty). At any rate, I've got 5 TB of storage on the server and I use the Buffalo as a backup.
Summary: Otherwise a good product. Minus an egg for the AD Users issue. Also run a 2 TB Buffalo NAS at home in RAID 1. Stream from it to my PC then to my XBOX via media center connector. HD movies look great. Nice alternative storage for your HTPC.
Pros: Low Price, repectable data speeds, fits 4 post rack
Cons: Buffalo Support is terrible. Beware, if implementing into a large Active Directory, will not pull users. It pulled my groups fine but not users. Called Buffalo twice and even after firmware update to 1.50 still won't pull domain users. I have 2000 user accounts and Buffalo claims it can handle up...
Summary: Once you get this unit set up and configured properly it seems to be stable and reliable. The documentation is pretty limited. For example, we built this out in a test environment using a slightly different network configuration than it was deployed into.
Summary: Disk space is getting very cheap and 1TB USB drives are becoming common. However, as drives get bigger, and we store more data, there's more to get lost if a drive fails. Backing up to CD/DVD is becoming less attractive as they get left behind in this "space race"; Blu-Ray is looking attractive but...
Summary: A bit pricey, maybe, but it does the job of high volume storage superbly with plenty of space for back-up using the RAID options. The unit operates quietly and is quite small, given the amount of storage it can accommodate.