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Howto mirror an AIX rootvg

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The following steps will guide you trough the mirroring of an AIX rootvg.
This info is valid for AIX 4.3.3, AIX 5.1, AIX 5.2 and AIX 5.3.

  • Make sure you have an empty disk, in this example its hdisk1
  • Add the disk to the vg via “extendvg rootvg hdisk1
  • Mirror the vg via: “mirrorvg rootvg”
  • Adapt the bootlist to add the current disk, the system will then fail to hdisk1 is hdisk0 fails during startup
    • do bootlist -o -m normal
    • this will list currently 1 disk, in this exmaple hdisk0
    • do bootlist -m normal hdisk0 hdisk1
  • Run a bosboot on both new disks, this will install all software needed for boot on the disk
    • bosboot -ad hdisk0
    • bosboot -ad hdisk1
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