Make your own (free) NAS or SAN

If you want to build your own cheap NAS or SAN, there are available a couple of software packages that can transform a regular PC into a full fledged NAS or SAN (or both).

This is a list of the free NAS or SAN software that i found:

1. FreeNAS - http://www.freenas.org/
2. OpenFiler - http://www.openfiler.com/
3. unRAID - http://lime-technology.com/
4. ClarkConnect - http://www.clarkconnect.com/

There are others, of course, but these are the most prominent packages i have found after a few days of searching and reading on the net. And there are free.

The most advanced is OpenFiler, which is based on rPath Linux. In the past CentOS was used. Some people regret the transition to rPath.