Modify Host Group (FC)

This function performs the following modifications to the existing FC host group.

• Changing the "Host Group Name" settings

• Changing the "Host Response" allocation

• Changing the "Host" settings (including addition and deletion of member hosts in a host group)

Hosts can be added to host groups which the host affinity setting has been already configured, or deleted from host groups.

If a host is added, the host affinity setting is automatically configured to the host, as a host group member.

If a host is deleted, the host affinity setting is cleared from the corresponding host.

The Number of Hosts That Can Be Registered

*1

:

Total of all hosts, regardless of the interface type.

Availability of Executions in the Default Role

Refer to "User Roles and Policies" for details on the policies and roles.

Host Group Setting

The following two methods are available for adding or deleting hosts from an existing FC host group.

• Selecting the Target Hosts that Are to Be Added or Deleted from the List

• Manually Specifying the Target Hosts that Are to Be Added

Selecting the Target Hosts that Are to Be Added or Deleted from the List

This screen is displayed when the [Registered And Now Connected] tab is clicked.

Add an FC host to a host group from the host list. Or delete an FC host from the host group. After an FC host has been added to a host group, the FC host is named automatically. Refer to "Naming Conventions for Adding or Renaming Hosts" for details.

Function Description

Filter setting is a function used to display a list of only the FC hosts meeting all the specified conditions.

No filtering is set by default. The following table shows conditions that can be specified.

Manually Specifying the Target Hosts that Are to Be Added

This screen is displayed when the [Manual Input] tab is clicked.

To add a new host that is not connected to the FC port, directly enter the WWN of the FC host. After the host has been added to a host group, the host is named automatically. Refer to "Naming Conventions for Adding or Renaming Hosts" for details.

Function Button

Naming Conventions for Adding or Renaming Hosts

• A name is automatically specified to the added host with the "host group name" and a suffix number "_x" (serial numbers starting with the smallest unused number).

  (Example) Host group: HOST_Group_001 (14 characters) the smallest unused number = 2 → Host name: HOST_Group_001_2, HOST_Group_001_3, etc.

• When the host name including the suffix number "_x" has more than 16 characters, the excess number of characters is deleted from the "host group name", starting with the last character and a suffix number "~x" will be added. Then, the name will contain only 16 characters.

  (Example) Host group: HOST_Group_ABCDE (16 characters) the smallest unused number = 2 → Host name: HOST_Group_ABC~2, HOST_Group_ABC~3, etc.

• When a host name including the suffix number already exists, the suffix number is increased by one (+1). The suffix number is increased by one (+1) until no host names overlap.

• The hosts, which were selected on the [Registered And Now Connected] screen, are named, and then the hosts, which were specified on the [Manual Input] screen, are named next.

• The name of the existing member host will not be changed.

Example of Changing the Host Response When Adding a Host to an Existing Host Group

When "Host-3" is added to the existing host group "Host_G3" (host response: HR_1)

• Configuration before the host is added

  Host group (Host response)	Member host	Host response that is allocated to the host
  Host_G1 (Default)	Host-1	Default
  	Host-2	Default
  Host_G2 (Default)	Host-2	Default
  	Host-3	Default
  Host_G3 (HR_1)	Host-4	HR_1

• Configuration after the host is added

  The same host response is applied to Host_G1, Host_G2, and Host_G3.

  Host group (Host response)	Member host	Host response that is allocated to the host
  Host_G1 (HR_1)	Host-1	HR_1
  	Host-2	HR_1
  Host_G2 (HR_1)	Host-2	HR_1
  	Host-3	HR_1
  Host_G3 (HR_1)	Host-3	HR_1
  	Host-4	HR_1

• Details

  The details on how the host response that is applied to the host is changed are as follows.

  1. The host response for Host-3 is changed from "Default" to "HR_1" (the host response for Host_G3).

  2. Since the host response for Host-3 is changed, the host response for Host_G2 to which Host-3 belongs is also changed from "Default" to "HR_1".

     (The host response for Host_2, which is the member host of Host_G2, is changed from "Default" to "HR_1".)

  3. Since the host response for Host-2 is changed, the host response for Host_G1 to which Host-2 belongs is also changed from "Default" to "HR_1".

     (The host response for Host_1, which is the member host of Host_G1, is changed from "Default" to "HR_1".)

Change the FC port group settings.

1. Select the FC host group that is to be changed, and click [Modify Host Group] in [Action].

2. Enter a new host group name, or re-select a host response to be assigned to the host group.

3. Add or delete a host in a host group in the following procedures.

   • Selecting the registration or deletion target host from the list

     1. Click the [Registered And Now Connected] tab.

     2. Add or delete hosts and click the [Modify] button.

        Select the corresponding host checkbox in the FC host list, to add a host.

        Clear the corresponding host checkbox in the FC host list, to delete a host.

        → A confirmation screen appears.

        Caution

        • If the WWN is not displayed when clicking the [Rediscover] button, make sure that there is no error in the connection environment, such as the connection between the host and the switch, and the CA port settings of the storage system. If there is no error in the connection environment, contact the Support Department, or specify the WWN manually.

        • An error screen appears in the following conditions:

          • The "Host Group Name" is not entered

          • The "Host Group Name" does not satisfy the input conditions

          • The "Host Group Name" overlaps with an existing host group name

            (Host group names cannot overlap with any other host group names, irrespective of the interface types.)

          • Some LUNs cannot be referenced from the host

          • No hosts are registered in the host group

          • The total number of hosts has exceeded the maximum number for the storage system

   • Manually specifying the target hosts that are to be added

     1. Click the [Manual Input] tab.

     2. Click the [Add] button.

        → The [Add FC Host] screen appears.

     3. Manually specify the WWN of the host to be added, and click the [OK] button.

        → Returns to the [Manual Input] screen.

        Caution

        • An error screen appears in the following conditions:

          • The "WWN" is not entered

          • The "WWN" does not satisfy the input conditions

     4. Repeat Step b and c when adding multiple WWNs.

     5. After adding or deleting the host is complete, click the [Modify] button.

        → A confirmation screen appears.

        Caution

        • An error screen appears in the following conditions:

          • The "Host Group Name" is not entered

          • The "Host Group Name" does not satisfy the input conditions

          • The "Host Group Name" overlaps with an existing host group name

            (Host group names cannot overlap with any other host group names, irrespective of the interface types.)

          • The multiple FC hosts with the same WWNs have been registered

          • Some LUNs cannot be referenced from the host

          • No hosts are registered in the host group

          • The total number of hosts has exceeded the maximum number for the storage system

4. Click the [OK] button.

   → Modification of the FC host group starts.

5. Click the [Done] button to return to the [Host Group] screen.