This is my attempt to cut through the hype and uncertainty to find a storage subsystem that works. I compared XFS and EXT4 under Linux with ZFS under OpenSolaris. The machine is a 2200MHz Athlon 64 with 1GB of memory and 8 400GB disks attached to an Areca ARC-1220 SATA controller. Linux is 2.6.22.5 and OpenSolaris is 5.11 snv_70 “Nevada”.