I run CentOS 5.4 on a Dell T300 with a 3x1Tb RAID5 (PERC6) (extremely low budget here- and we need disk). I use CentOS' Xen + libvirt to run virtual boxes. The host disk performance looks good (I know ...
Server: Debian Squeeze, samba 3.5.6, AMD Athlon(tm) 64 X2 Dual Core Processor 4200+, hitachi 5400rpm drives Client: Ubuntu 10.04, AMD Athlon(tm) II X2 255 Processor Switch: D-link DIR-825 (gigabit), ...