Host Group Addition

This function creates new host groups and register member hosts.

This section uses FC host groups as an example to show how to create host groups.

An FC host group is a group of hosts (HBAs) whose interface type is FC and accesses the same LUN group. The Host Affinity is specified for each FC host group.

Table: The Number of Host Groups and Hosts That Can Be Registered

Model

Number of host groups (*1)

Number of hosts (HBAs)

Per storage system

Per storage system (*2)

Per CA port

Per host group

DX600 S6

512

4,096

256

8

DX900 S6

1,536

8,192

64

DX8900 S6
*1 : 

The total number of host groups irrespective of the interface types.
*2 : 

The total number of hosts irrespective of the interface types.
Caution

  • Registration of the host is necessary to create a host group. It is not possible to delete all hosts from a host group.

  • Hosts that are registered from Web GUI with this function belong to one of the host groups.

  • A host can be a member of multiple host groups. However, only one LUN group can be allocated to a combination of host and port when configuring host affinity.

  • Refer to "Configuration Guide -Server Connection-" for each OS type to assign an appropriate host response to the host group. A host response has a recommended pattern which has been prepared for each OS type. For details, refer to "Recommended Patterns of Host Responses" of "Settings" in "Add Host Response" of "Web GUI User's Guide".

    If an appropriate host response is not configured to the host group, the path may not be switched correctly or the volume may not be recognized correctly.

  • The host response that is specified for a host group is applied to all the member hosts in the target group. When a host belongs to multiple host groups, the same host response must be applied for all the groups to which the target host belongs. When a host that already belongs to an existing host group is added to a newly created host group, the host response of the new host group is applied to the host. The host response of the existing host group to which the target host belongs is also changed.

    For details, refer to "Example of Changing the Host Response When Adding a Host" of "Settings" in "Add FC Host Group" of "Web GUI User's Guide".

For host group creation, refer to "Operating Procedures" in "Add FC Host Group" of "Web GUI User's Guide".