Overview of volume allocation

REST API Reference Guide for Virtual Storage Platform 5000, Virtual Storage Platform E Series, and Virtual Storage Platform G/F Series

Part Number
Volume allocation means setting LU paths to allow the host to access volumes in the storage system.

In the REST API, allocate a volume by performing the following procedure:

  1. Create a volume that meets the host requirements.

    You can either use a volume that meets the requirements from an existing LDEV or create an LDEV from the parity group or pool.

    When the host is connected to the external storage system by using Universal Volume Manager, you can create an external volume from an existing external parity group (external volume group).

  2. Configure a port.

    Configure a host group or an iSCSI target for the storage system port. Register information about the host that is to access the LDEV in the host group or the iSCSI target.

    Specify the host mode and host mode options according to the host type.

  3. Set the LU path.

    Setting the LU path between the LDEV and the port's host group or iSCSI target enables access from the host to the LDEV.

In the preceding figure, an LDEV is created from the parity group, and the LU path is set for the host group in which the WWN of host A is registered. In addition, another LDEV is created from the DP pool, and the LU path is set for the host group in which the WWNs of host B and host C are registered. By registering the WWNs of multiple hosts in the host group, you can apply the same settings for accessing the LDEV to the hosts at the same time.

For details about the requirements for creating volumes and how to specify settings for host groups or iSCSI targets, see the Provisioning Guide for Open Systems, or the Provisioning Guide.


For host groups that use external ports or initiator ports, do not run this request from the REST API.