Add FC Host Group

This function creates a new FC host group and registers which hosts are members of this group.

A host group is a group of hosts (HBAs) that are allowed to access the volume (LUN group). The Host Affinity is specified for each host group.

The Number of Host Groups and Hosts That Can Be Registered

*1	:	Total of all host groups, regardless of the interface type.
*2	:	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

Host Response and Referable Number of LUNs (Available: )

*1	:	"PRHL" indicates "Peripheral device addressing (Default)" and "FLAT" indicates "Flat space addressing".
*2	:	Some restrictions are applied for environments to use "LUN Expand Mode (Peripheral Device Addressing)". Refer to "Setting the Host Responses" in "Configuration Guide -Server Connection-" (*3) for details.
*3	:	Configuration Guide -Server Connection- Fibre Channel/ ETERNUS AF series, ETERNUS DX200F All-Flash Arrays, ETERNUS DX S5/S4/S3 series Hybrid Storage Systems Settings

The following two methods are available to register a host.

• Selecting the Registration Target Host from the List

• Manually Specifying the Registration Target Host

Selecting the Registration Target Host from the List

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

Select an FC host to be registered in a host group from the host list. After registration, the FC host is named automatically. Refer to "Naming Conventions for Adding 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 Registration Target Host

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

To register a new host that is not connected to the FC port, directly enter the WWN of the FC host. After registration, the host is named automatically. Refer to "Naming Conventions for Adding Hosts" for details.

Function Button

Naming Conventions for Adding Hosts

• A name is automatically added to a host with the "host group name" and a suffix number "_x" (serial numbers starting with "0").

  (Example) Host group: HOST_Group_001 (14 characters)→ Host name: HOST_Group_001_0, HOST_Group_001_1, 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)→ Host name: HOST_Group_ABC~0, HOST_Group_ABC~1, 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 [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

When a new host group "Host_G3" (host response: HR_1) is created and "Host-3" and "Host-4" are added

• 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

• 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".)

In this screen, create a FC host group and registers the host to be a member.

1. Click [Add FC Host Group] in [Action].

2. Enter a host group name to be created, and select a host response to be assigned to the host group.

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

   • Selecting the registration target host from the list

     1. Click the [Now Connected] tab.

     2. Select a host that is to be registered from the FC host list, and click the [Add] button.

        → 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.)

          • No hosts are registered in the host group

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

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

          • A host that has a LUN that cannot be referenced is added

   • Manually specifying the registration target host

     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 registered, 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 registering multiple WWNs.

     5. After registering the host is complete, click the [Add] 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

          • No hosts are registered in the host group

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

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

          • A host that has a LUN that cannot be referenced is added

4. Click the [OK] button.

   → Registration of the FC host group starts.

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

   Note

   • Click the [Continue] button to continue registering FC host groups.