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SFHA Solutions 6.1: Migrating from EMC PowerPath to DMP

Level 4

You can use Dynamic Multi-Pathing (DMP) instead of third-party drivers for advanced storage management. To migrate from EMC PowerPath to DMP, you must remove devices from EMC PowerPath control and enable DMP on the devices. The migration causes application downtime on the host, as you must stop any applications running on the host that are using EMC PowerPath devices, and any Symantec Cluster Server (VCS) services that are running.

For information on migrating to DMP and supported migration paths, see:

Setting up DMP to manage native devices (Linux)

For operating system specific commands to migrate from EMC PowerPath to DMP, see:

To migrate devices from EMC PowerPath to DMP:

  1. Stop the applications that use the PowerPath meta-devices. In a Symantec Cluster Server (VCS) environment, stop the VCS service group of the application, which will stop the application.
  2. Unmount any file systems that use the volume group on the PowerPath device.
  3. On Linux and AIX, stop the logical volume manager (LVM) volume groups that use the PowerPath device. On Solaris, export the ZFS pools that use the PowerPath Device.
  4.  On AIX, if the root volume group (rootvg) is under PowerPath control, migrate the rootvg to DMP. For more information, see:                                                            
    Migrating a SAN root disk from EMC PowerPath to DMP control
  5. Remove the disk access names for the PowerPath devices from VxVM.
  6. Take the device out of PowerPath control.
  7. Verify that the PowerPath device has been removed from PowerPath control.
  8. Run a device scan to bring the devices under DMP control.
  9. Import the VxVM disk group(s).
  10. Turn on the DMP support for the LVM volume group.
  11. Mount the file systems.
  12. Restart the applications.

For information on migrating to DMP on Storage Foundation for Windows, see the chapter titled "Migrating from EMC PowerPath to Veritas Dynamic Multi-Pathing for Windows" in the 6.0.1 Veritas Dynamic Multi-Pathing for Windows Installation and Upgrade Guide.

Symantec Storage Foundation and High Availability documentation for other releases and platforms can be found on the SORT website.