Hi, I had installed ISA in a server configured in Mirrored Volumes Hard Drives. I have read in Tom's book that it is better to use RAID 5 Volumes, this because the access to the cache drive is faster, because it doesn't have to write in two drives the same information. Recently I have noted a slower access to Internet in my clients, although I have incremented the percentage of RAM used for cache. Do you think that I will get a better performance if I reinstall the hole server, this time in a RAID 5 volume? or is there another way to solve this without reinstalling the hole system? Thanks. Armando Treviño L.