I started installing Elastix using 32GB and 64GB SSD SATA Drives. Also started doing some testing with CF memory with PATA and SATA adapters. The install takes longer since CF in PATA is slow (30mins). the elastix boots very fast with SSD of CF and it runs cooler, less power and noise. In a 4GB CF you have almost 2GB free. Also we started testing Intel ATOM Dual Core CPU motherboard ITX(330) and it works great. You need to re-compile the Ethernet card (Realtek 8168). This board together with a SSD or CF Drive is silent and very low power and very low cost solution. Add a redundant Power supply and this system should be running for years maintenance free with very few moving parts.