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QNAP

QuTS hero h5.1.x

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Creating an iSCSI target

  1. Go to iSCSI & Fibre Channel > iSCSI Storage.
  2. Click Create, and then select New iSCSI Target.

    The iSCSI Target Creation Wizard window opens.

  3. Click Next.
  4. Specify a target name.

    QuTS hero appends the specified name to the iSCSI qualified name (IQN). IQNs are unique names used to identify targets and initiators.

    • Valid characters: 0 to 9, a to z, A to Z

    • Length: 1 to 16 characters

  5. Optional: Specify a target alias.

    An alias enables you to identify the target more easily on the initiator.

    • Length: 1 to 32 characters

    • Valid characters: 0 to 9, a to z, A to Z, underscore (_), hyphen (-), space ( )

  6. Optional: Select Allow clustered access to this target.

    When enabled, multiple iSCSI initiators can access this target and its LUNs simultaneously.

    Warning:

    To prevent data corruption, the initiators and LUN filesystems must all be cluster-aware.

  7. Optional: Enable CRC checksums.

    Initiators and targets communicate over TCP connections using iSCSI protocol data units (PDU). The sending device can send a checksum with each PDU. The receiving device uses this checksum to verify the integrity of the PDU, which is useful in unreliable network environments. There are two checksum types, which can be enabled separately.

    Checksum Type

    Description

    Data Digest

    The checksum can be used to verify the data portion of the PDU.

    Header Digest

    The checksum can be used to verify the header portion of the PDU.
  8. Click Next.
  9. Configure CHAP authentication settings.
    Note:

    If you migrate your system to another NAS and have CHAP authentication enabled for the target, you must configure all CHAP passwords again on the new NAS. You can reuse old passwords or create new passwords.

    1. Select a CHAP authentication option.

      Option

      Description

      No CHAP

      Do not use CHAP authentication for this target.

      Default CHAP

      Use the default CHAP authentication settings in Global Settings > Default iSCSI CHAP for this target.

      For details, see iSCSI & Fibre Channel global settings.

      Customized CHAP

      Configure unique CHAP authentication settings for this target.
    2. Optional: Configure customized CHAP settings.

      • One-way CHAP forces iSCSI initiators to authenticate when connecting to a target.

        Note:

        This is the default CHAP setting.

      • Mutual CHAP forces both the initiator and target to authenticate each other.

        Note:

        Select Mutual CHAP to enable this feature. You can specify different usernames and passwords for one-way CHAP and mutual CHAP.

      The username and password requirements are the same for one-way and mutual CHAP:

      • Username

        • Length: 1 to 127 characters

        • Valid characters: 0 to 9, a to z, A to Z, colon (:), period (.), hyphen (-)

      • Password

        • Length: 12 to 16 characters

        • Valid characters: 0 to 9, a to z, A to Z

      Note:

      If you want to modify these settings later, the target must be disconnected from all initiators.

  10. Click Next.
  11. Select the network interfaces that this target will use for data transmission.
  12. Click Next.
  13. Optional: Select Create a LUN and map it to this target.

    If selected, QuTS hero opens the Block-Based LUN Creation Wizard immediately after finishing this wizard. The new LUN will then be automatically mapped to this target.

  14. Click Apply.

QuTS hero creates the iSCSI target, and then opens the Block-Based LUN Creation Wizard window if Create a LUN and map it to this target was selected.