Workflow for creating a GAD environment

Global Active Device for VSP One Block
Version
10.5.x
File Size
25537 KB
Audience
anonymous
Part Number
MK-23VSP1B011-11
ft:lastEdition
2026-06-23
  1. Adding the external storage system for the quorum disk
  2. Verifying the physical data paths
  3. Creating command devices
  4. Creating the configuration definition files
  5. Starting CCI
  6. Connecting the primary and secondary storage systems
  7. Creating the quorum disk
  8. Setting up the secondary storage system
  9. Updating the CCI configuration definition files
  10. Creating the GAD pair
  11. Adding a redundant path to the S-VOL
Note: The in-band method of issuing CCI commands are used in CCI examples and instructions. You can also issue GAD commands using the out-of-band method. For details about the in-band and out-of-band methods, see the Command Control Interface User and Reference Guide.

The initial state before GAD configuration consists of one host, one primary storage system, and one secondary storage system.

  • Primary and secondary storage systems:
    • GAD is installed on both storage systems.
    • Resource group 0 exists by default in both storage systems.
    • DP-VOLs are configured and have LU paths defined. These volumes will become the P-VOLs of GAD pairs.
    • A volume connected to a host via NVMe-oF can be used as a GAD pair volume. For more information about the NVMe-oF settings, see the Provisioning Guide.
  • Host:
    • A volume connected to a host via NVMe-oF is also available as a GAD pair volume. For more information about the NVMe-oF settings, see the Provisioning Guide.
    • The required management software for your configuration, multi-path and/or cluster software, is installed.
    • The CCI software is installed.
    Note: The creation of GAD pairs is not affected by the presence or absence of server I/O to the DP-VOLs.