RAID is more useful for high availability and is almost always slower writing as it has to calculate parity, write to multiple drives, etc. I would suggest a mirror for your system drive and a JBOD configuration for your cache drive(s). As for drive make and models, my only recommendation is to get the fastest disks and subsystem possible: SCSI 320 with 15k drives. As for an amount of storage, you need to estimate how much http traffic your network would do in a week. Another piece you have not mentioned is memory, check the FAQ specifically http://www.squid-cache.org/Doc/FAQ/FAQ.html#toc8.11 This will help you with how much memory you need. Thanks, Bryan -----Original Message----- From: Pasi Pekka Leinonen [mailto:pasi-leinonen@xxxxxxxxxx] Sent: June 9, 2006 1:01 PM To: squid-users@xxxxxxxxxxxxxxx Subject: Squid in gigabit speed continuing... Very big thanks to all who replied to my earlier message! If I understand right, RAID is bad on access time and if I want fast proxy I should buy e.g. WD Raptor 10000rpm. How does RAID slows down the disks speed if I have e.g. 4 pcs WD Raptor 10000rpm 74Gb on hardware or software RAID? Or is it realy better to have 4 pcs WD Raptor 10000rpm without RAID? Or is the gain from RAID so little it's not worth it? What would be the best amount of storage to cache 300 user network. which is most important when not using RAID: The amount of disk space or the amount of disks.