Migrating an internal root disk to a SAN root disk under DMP control
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Migrating an internal root disk to a SAN root disk under DMP control

If the system has been booted from an internal disk (such as hdisk0), you can configure an alternate root disk on the attached SAN storage before you put it under DMP control.

To migrate a root disk from LVM to DMP control

  1. Use the chdev command to clear the PVID of the disk in the SAN storage that is to be the SAN root disk: 

    # chdev -l hdisk373 -a pv=clear

    Repeat this command for all paths of the SAN root disk.

  2. Use the alt_disk_install command to create the SAN root disk: 

    # alt_disk_install -C hdisk373

  3. Reboot the system from the SAN root disk.

  4. Configure DMP.

    See Configuring DMP support for booting over a SAN.

    See Example of migrating an internal root disk to a SAN root disk under DMP control.

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