AnandTech has one of the best comparisons of NAS devices on the internet.
AnandTech reviews the Promise VTrak J300s SATA/SAS chassis. Up to four of these can be daisy chained to a nice SAS RAID card.
NewsForge reviews FreeNAS 0.66.
FreeNAS, an open source NAS server, can convert a PC into a network-attached storage server. The software, which is based on FreeBSD, Samba, and PHP, includes an operating system that supports various software RAID models and a Web user interface. The server supports access from Windows machines, Apple Macs, FTP, SSH, and Network File System (NFS), and it takes up less than 16MB of disk space on a hard drive or removable media.
SmallNetBuilder reviews two Infrant NAS devices, the ReadyNAS NV+ and 1100.
Ars Technica has a system builder buyers guide for low and high end home NAS systems. Both hardware and software raid makes an appearance.
With multiple PCs becoming commonplace in the home, the need to push data through every room in the house via Ethernet or WiFi combined with the proliferation of digital-only content mean the storage demands of home users are rising quickly.
Welcome to Do It Yourself – Network Attached Storage! DIY NAS will hold news, content, reviews and help for those rolling their own network attached storage devices. Whether it is a Linux box holding dozens of hard drives, a Mac Mini stacked on a mountain of firewire devices, or a Linksys NSLU2 with a USB drive, DIY NAS will eventually have some kind of information about it.