Modify CA Port Group

Overview

This function performs the following modifications to the existing CA port group.

  • Changing the CA port group name

  • Adding and deleting member ports in a CA port group

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

If a port is added, a host affinity is set automatically to the relevant port as a member of the CA port group.

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

  • Regardless of the CA type, the maximum number of CA port groups per storage system is 128 (384 for the ETERNUS DX900 S5 or the ETERNUS DX8900 S4).

  • The maximum number of ports per CA port group is 8.

  • Ports with the same CA type as the member ports of the CA port group can be added.

  • A port can be a member of multiple CA port groups.

Caution

  • Registration of the port is necessary to create a CA port group. Not all of the ports can be deleted from a CA port group.

  • Only ports with "CA" or "CA/RA" as the port mode can be added to a CA port group. Ports with other port modes cannot be added to a CA port group.

  • Ports that are used for the Storage Cluster function cannot be added to the port group.

  • A port in the affinity mode enabled (On) and a port in the affinity mode disabled (Off) cannot exist together in a CA port group.

    • The affinity mode (On/Off) of a CA port group is decided when the host affinity setting has been configured on the corresponding CA port group. All of the member ports in a CA port group have the same affinity mode.

    • The affinity mode (On/Off) of a CA port group cannot be changed until the host affinity setting is cleared from the corresponding CA port group.

    • When one port is registered in multiple CA port groups, and the affinity setting has been configured on one of the CA port groups including the corresponding port, the affinity setting is configured on all the CA port groups, which include the corresponding port, and also on the member ports.

    • Ports without the host affinity setting can be members of a CA port group, regardless of whether the affinity mode for the group is enabled (On) or disabled (Off).

Note

  • Host access does not need to be stopped when adding or deleting ports from the CA port group where the host affinity setting has been configured.

  • When a port was added to a CA port group, of which the host affinity setting has been configured, paths between all the hosts with the host affinity setting and the added port will be configured. To modify the path between a host and a port, use the [Modify Host Affinity] function.

  • When a port in the CA port group for which the host affinity settings are already configured is deleted, the path from the host to the port is also deleted.

  • When creating a new CA port group and registering a port in the CA port group, use the [Create FC Port Group] function, the [Create iSCSI Port Group] function, or the [Create SAS Port Group] function depending on the CA port type.

  • To change the port mode to "CA" or "CA/RA", use the [Modify Port Mode] function.

User Privileges

Availability of Executions in the Default Role

Default role Availability of executions
Monitor  
Admin
StorageAdmin
AccountAdmin  
SecurityAdmin  
Maintainer

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

Settings

CA Port Group Setting

In this screen, set the CA port groups.

Item Description Setting values

Name

Specify the CA port group name.

An existing CA port group name cannot be used. (Port group names cannot overlap with any other port group names, irrespective of the CA types.)

Up to 16 alphanumeric characters,

symbols (except "," (comma) and "?"),

and spaces

Type

The CA type of a CA port group is displayed.

FC

iSCSI

SAS

Number of CA Port Group Members

The number of member ports (0 to 8) in the CA port group is displayed.

The number of member ports in the port list is updated every time the checkbox has been selected or cleared on the port list.

Select Ports

In this screen, add a port to a CA port group. Or delete a port from a CA port group. The selectable ports are displayed on the port list.

Item Description

Checkbox to select a port

Select the checkbox of the port that is to be added to the CA port group. Clear the checkbox of the port that is to be deleted from the CA port group.

The checkbox of the port, which has been registered in the CA port group, is selected.

Caution

  • If the CA port group's affinity mode is "On" (the affinity mode of all the selected ports is "On"), the port, of which affinity mode is "Off", cannot be selected.

  • If the CA port group's affinity mode is "Off" (the affinity mode of all the selected ports is "Off"), the port, of which affinity mode is "On", cannot be selected.

  • Up to eight ports can be selected.

Port

The location information of the port is displayed.

For the ETERNUS DX900 S5 or the ETERNUS DX8900 S4

CE#x CM#y CA#z Port#w

For the other models

CM#y CA#z Port#w

x: CE number

y: CM number

z: CA number

w: Port number

Note

  • Only the ports whose CA type is the same as the selected CA port group (FC/iSCSI/SAS) are displayed.

Affinity

The affinity status of the port is displayed.

  • On

    The affinity mode of the port is enabled (On), and the host affinity setting has been configured.

  • Off

    The affinity mode of the port is disabled (Off), and the host affinity setting has been configured.

  • Blank

    The port is not registered in a CA port group. Or all of the CA port groups, to which the port belongs, have not had the affinity setting applied.

Operating Procedures

In this screen, change the CA port group settings.

  1. Select the CA port group that is to be changed, and click [Modify Port Group] in [Action].

  2. Specify the new name of the CA port group, add a port to the CA port group (select the checkbox), or delete a port from the CA port group (clear the checkbox), and click the [Modify] button.

    → A confirmation screen appears.

    Caution
    • An error screen appears in the following conditions:

      • The "Name" is not entered

      • The "Name" does not satisfy the input conditions

      • The "Name" overlaps with an existing CA port group name

      • No ports are registered in the CA port group

  3. Click the [OK] button.

    → Changing of the CA port group settings starts.

  4. Click the [Done] button to return to the [CA Port Group] screen.