Create FlashCopy Logical Drive Wizard: Additional Instructions for UNIX – Regular Disks

Use this procedure when creating on a running one of these UNIX-based operating systems:


Important:

Failure to complete the steps listed might result in an inaccurate point-in-time image of the .

For a process overview of the flashcopy logical drive creation process, refer to the Create FlashCopy Logical Drive Wizard: Process Overview – UNIX online help topic.

You can reuse flashcopy logical drives for frequent backups or nightly backups. You can create flashcopy logical drives for one-time usage, such as speculative change or upgrade testing. For instructions about how to reuse a disabled flashcopy logical drive, refer to the Reusing FlashCopy Logical Drives: Additional Information for UNIX – Regular Disks online help topic.

Keep these guidelines in mind before you create a flashcopy logical drive:

  1. Start the storage management software.
  2. From the Logical pane of the Logical/Physical tab, select the storage subsystem, and select Tools >> Manage Storage Subsystem .
  3. Within the Logical pane, select a , and create a flashcopy logical drive by using one of these methods:

    create snapshotVolume
    

    For command reference information about creating a flashcopy logical drive, refer to the online help topics in the Enterprise Management Window.

  4. Assign a between the flashcopy logical drive and the host that will access the flashcopy logical drive. Mappings can be defined by using one of these methods:

    create mapping volume
    

    For command reference information about creating a mapping, refer to the online help topics in the Enterprise Management Window.

  5. Make sure that the host operating system recognizes the flashcopy logical drive by completing one of these tasks.

    Solaris operating system-specific instructions:

    At the host prompt, type this command, and press Enter:

    /etc/raid/bin/hot_add
    

    IRIX operating system-specific instructions:

    Perform a path scan. At the host prompt, type this command, and press Enter:

    scsiha -rp <X> <X> ;ioconfig -f /hw; hinv
    

    In this command, <X> is the SCSI controller number.

    After the logical drives have been created and the mappings have been defined, this step makes sure that the operating system is aware of the newly created logical drives, without having to reboot the host.
  6. Run the utility to associate the LUN with a host operating system and to make sure that the flashcopy logical drive is recognized by the host.
    After the logical drives have been created and the mappings have been defined, run the SMdevices utility to make sure that the logical drive name and the operating system storage subsystem name (assigned by the operating system) correlate.
  7. Go to the indicated step, depending on when the flashcopy logical drive will be used:
  8. If the flashcopy logical drive is being created for use at a later date, disable the flashcopy logical drive now by using one of these methods:

    disableSnapshot volume
    

    For command reference information about disabling a flashcopy logical drive, refer to the online help topics in the Enterprise Management Window.


    Important:

    If I/O activity to the base logical drive was stopped or data transfer was suspended, resume I/O activity to the logical drive at this time or start data transfer.

  9. Mount the flashcopy logical drive to its intended host.
  10. Use the flashcopy logical drive with your backup application, for speculative testing, or with another application.
  11. Unmount the flashcopy logical drive.
  12. After the flashcopy logical drive is no longer required, disable or delete the flashcopy logical drive.If you disable the flashcopy logical drive instead of deleting it, you can retain the flashcopy logical drive and its associated . Then, when you need to create a different flashcopy of the same base logical drive, you can re-create the disabled flashcopy logical drive. This action takes less time than creating a new flashcopy logical drive and stops any reduction in performance that might occur if the flashcopy logical drive remains available.For information about disabling or re-creating a flashcopy logical drive, refer to the Disabling a FlashCopy Logical Drive online help topic and the Re-creating a FlashCopy Logical Drive online help topic. For information about deleting a flashcopy logical drive, refer to the Deleting a Logical Drive online help topic.
    For command reference information about disabling, re-creating, and deleting a flashcopy logical drive, refer to the online help topics in the Enterprise Management Window.

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