Tom Mainelli says, I discussed in an earlier column using Microsoft’s $180 Windows Home Server to turn an old PC into a media-streaming, backup-friendly server. “Great idea,” wrote many a reader, “but too pricey.” For those penny-pinchers, I suggest FreeNAS. Based on the FreeBSD operating system (a Unix derivative), FreeNAS is a server operating system that offers lots of features, a very small footprint, and a can’t-beat-it price (it’s free). Developed by an open-source community, it is constantly evolving (with even nightly builds). Read more.