Dimensions to test:

• Filesystems
  • XFS
  • JFS
  • reiser4...?
  • btrfs...?
• Caching
  • nobarrier, -W 0
  • barrier, -W 1
• RAID level
  • RAID1
  • RAID10
  • RAID5
• Number of disks
  • 1
  • 2
  • 3
  • 4
  • 6
• RAID abstraction
  • LVM
  • MD
• workload
  • kernel untar - fsync heavy
  • kernel build - many-threaded