I need to install a new proxy server in exchange to the current one based on Squid 2.7 STABLE 6. You already told me that on the new, 12 core, 12 GB server, I should create a hierarchy of squids to use all CPUs but I now have to replace a failing hardware. I currently use a aufs + coss cache_dir, I have about 3000 clients on a 200mbit link and traffic is passed to an upstream cache_peer (antivirus/url checker). Should I go with 3.2 or it's better to stay with 3.1 ? Which storage types are "mainstream" with new squid versions ? Thanks