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Emulating a qualified tape drive

You can use a nonqualified tape drive by making it emulate a qualified tape drive.

Steps

  1. Ensure that you have a tape adapter available on the storage system.
  2. Disable the adapter port to which the tape drive will be attached.
  3. Connect the tape drive to the storage system according to the tape drive manufacturer’s instructions.
  4. Turn on the tape drive and wait for the tape drive to complete its power-on activities.
  5. Enable the adapter interface.

    When the adapter is enabled, it will discover the device.

    An error message is displayed, which tells you that the tape drive is unsupported.

  6. Enter the following command:
    sysconfig -t

    This command creates the /etc/cloned_tapes file, if it does not exist. Observe the vendor ID and product ID of the nonqualified devices.

    Note: The cloned tapes emulation method cannot be used if the product ID contains spaces. For example, the product ID Ultrium 4-SCSI cannot be used for cloning because it has a space between Ultrium and 4. In such a case, you must use a configuration file.

  7. Open the storage system’s /etc/cloned_tapes file in a text editor on a client that can access it.
  8. For each nonqualified tape drive, create a line with the following format in the /etc/cloned_tapes file:
    [clone_vendor_ID] clone_product_ID EMULATES [vendor_ID] product_ID

    clone_vendor_ID is the vendor of the nonqualified tape drive.

    clone_product_ID is the model number of the nonqualified tape drive.

    vendor_ID is the vendor of a qualified tape drive that you want the nonqualified tape drive to emulate.

    product_ID is the model number of a qualified tape drive that you want the nonqualified tape drive to emulate.

    Example

    The following entry in the /etc/cloned_tapes file enables the storage system to treat the nonqualified Quantum DLT9000 tape drive as a clone of the qualified Quantum DLT7000 tape drive:

    QUANTUM DLT9000 EMULATES QUANTUM DLT7000

  9. Enter the following command:
    sysconfig -t The system reads the cloned_tapes file and puts emulation into effect. Verify that the new device appears as an emulated device.