The root is called /data

• PUIAS
  • 1 - symlink to latest version of 1
  • 1WS - symlink to latest version of 1WS
    • en
      • os
        • arch (i386|x86_64)
          • dosutils - utilities to create boot floppies in dos, or boot linux from dos
          • headers - up2date header files
          • images - boot images
            • pxeboot - pxe boot files
          • isolinux - boot iso files
          • RedHat
            • base - install images
            • RPMS - packages
          • repodata
  • 2 - symlink to latest version of 2
  • 2cluster - symlink to latest version of 2cluster
  • 2WS - symlink to latest version of 2WS
  • 5 - symlink to latest version of 5
  • 6 - symlink to latest version of 6
  • buildsys - packages used to build the distro
  • computational - super computing and cluster packages
  • local - deprecated, original location of versions 1 and 2
  • RHDirServ - Red Hat® Directory Server
  • RHEIPA - Red Hat® Enterprise IPA (Identity, Policy, Audit)
  • testing - rawhide
  • unsupported - tested but possibly not maintained packages
  • unsupported-vt - deprecated - use kvm built into 5.5 and 6
  • updates
  • WAS - Red Hat® WAS (Application Stack)
• RedHat
• epel