Hello Joseph, I use a Dell R320 (2, because failover), under OpenBSD 5.2 with 16GB RAM and Two Intel PRO/1000 PT (82571EB) (Broadcom 5720 isn't supported). I have 500-600 users/smartphones and 1GB of WAN bandwidth. To improve perfs (and this explain why so many RAM), i move /var/squid/cache to mfs (memory file system), and i use 4G "disk" cache and 3.5G memory cache. Perfs are very great. My servers are also the main client routers for other traffic. I hope that helps -- Best regards, Loïc BLOT, Engineering UNIX Systems, Security and Networks http://www.unix-experience.fr Le jeudi 10 janvier 2013 à 03:03 -0800, John Joseph a écrit : > Hi All > I am trying to make the hardware specs for the SQUID cache server. > I have around 600 users, they may be using the bandwidth from 500dbps to 3Mbs. Expected annual increase of users will be up to 20%. I would like to size the hardware specs for the server, which will be enough for next coming three years.( user may be up to 900 then) > What specs should I go for? > For fast r/w I will go for SCSI hard disk, but I am not sure about the amount of RAM, CPU power and harddisk space for disk cache. > I would like to request guidance on how to determine the hardware specs > Guidance requested. > Thanks > Joseph John >