Managing Hosts

This chapter contains the following sections:

Hosts

Hosts connect to the storage system either through a fibre channel interface or an IP network. The system does not automatically present volumes to the attached hosts. You must map each volume to a particular host object to enable the volume to be accessed through the worldwide port names (WWPNs) or iSCSI names that are associated with the host object. A host object is a logical object that represents a list of WWPNs and a list of iSCSI names, which means that the host object can have both WWPNs and iSCSI names. These WWPNs and iSCSI names identify the interfaces that the hosts use to communicate with the storage system. iSCSI names can be either iSCSI qualified names (IQNs) or extended unique identifiers (EUIs).

  • iSCSI hosts—An iSCSI-attached host is a system that is connected to the storage through an IP network. When you configure a host on the storage system, you can create a host object that is identified by iSCSI names that are used to communicate with the system.

  • Fibre Channel hosts—A fibre channel host is an application server that is connected to the system through the fibre channel network. Before the host can access the volumes, you must create a fibre channel host object on the system. You can configure the host object with the WWPN of the host machine and specify which volumes the host machine can access.

Creating Hosts

    Step 1   Choose Physical > Storage.
    Step 2   In the left pane, navigate to the pod in which the storage account is added.
    Step 3   Choose the storage account type.
    Step 4   Click Hosts.
    Step 5   Click Create.
    Step 6   On the Create Host screen, complete the following fields:

    Name

    Description

    Host Type drop-down list

    Choose the type of host that you want to connect to the storage system.

    Host Name field

    The host name.

    Fibre Channel Port Definitions field

    Enter the world wide port name (WWPN) that identifies the host to the system. A WWPN consists of 16 (hexadecimal) digits. In case of multiple ports, separate port numbers by a comma. See Fibre Channel Port Definitions in the FC Ports tab.

    iSCSI Port Definitions field

    Enter the iSCSI name that can be either in the iSCSI qualified names (IQNs) or in the extended unique identifiers (EUIs) format. In case of multiple ports, separate port numbers by a comma.

    Use CHAP Authentication (all ports) check box

    Check this check box for CHAP authentication for iSCSI-attached hosts.

    Use CHAP Authentication Name field

    Enter a name for the shared secret for CHAP authentication.

    I/O Group

    Choose one or more I/O groups for the host to access volumes from the selected I/O group(s).

    Host Type drop-down list

    Choose one of the following host types:

    • Generic—Choose this type for most supported host systems.

    • HP/UX—Choose this type for HP host systems.

    • OpenVMS—Choose this type for OpenVMS host systems..

    • TPGS (Target Port Group Support) —Choose this type for Solaris or Apple host systems that require a load balancing.

    Step 7   Click Submit.

    Deleting Hosts

      Step 1   Choose Physical > Storage.
      Step 2   In the left pane, navigate to the pod in which the storage account is added.
      Step 3   Choose the storage account type.
      Step 4   Click Hosts.
      Step 5   Choose the host that you want to delete.
      Step 6   Click Delete.
      Step 7   Check the Delete hosts even it has volumes are mapped to them. These volumes will no longer be accessible to hosts check box.
      Step 8   Click Submit.

      Renaming Hosts

        Step 1   Choose Physical > Storage.
        Step 2   In the left pane, navigate to the pod in which the storage account is added.
        Step 3   Choose the storage account type.
        Step 4   Click Hosts.
        Step 5   Choose the host for which you want to change the name of the host.
        Step 6   Click Rename.
        Step 7   On the Rename Host screen, enter a new host name.
        Step 8   Click Submit.

        Unmapping All Volumes

          Step 1   Choose Physical > Storage.
          Step 2   In the left pane, navigate to the pod in which the storage account is added.
          Step 3   Choose the storage account type.
          Step 4   Click Hosts.
          Step 5   Choose the host from which you want to unmap all volumes that are mapped to the host.
          Step 6   Click Unmap All Volumes.
          Step 7   Click Submit.

          Importing Mappings

            Step 1   Choose Physical > Storage.
            Step 2   In the left pane, navigate to the pod in which the storage account is added.
            Step 3   Choose the storage account type.
            Step 4   Click Hosts.
            Step 5   Choose the target host from which you want to import the host mappings.
            Step 6   Click Import Mappings.
            Step 7   On the Import Mappings screen, click Select.
            Step 8   Check the check box to chose the source host to which you want to import the host mappings from the target host.
            Step 9   Click Select.
            Step 10   Click Submit.

            Duplicating Mappings

              Step 1   Choose Physical > Storage.
              Step 2   In the left pane, navigate to the pod in which the storage account is added.
              Step 3   Choose the storage account type.
              Step 4   Click Hosts.
              Step 5   Choose the source host from which you want to duplicate the host mappings to one or more targets.
              Step 6   Click Duplicate Mappings.
              Step 7   On the Duplicate Mappings screen, click Select.
              Step 8   Check the check box to choose one or more target hosts in which you want to duplicate host mappings from the source.
              Step 9   Click Select.
              Step 10   Click Submit.

              Deploying an ESXi Fibre Channel and Fibre Channel over Ethernet Host on IBM Storwize System

                Step 1   Choose Orchestration.
                Step 2   On the Orchestration page, click Workflows.
                Step 3   In the Orchestration pane, Workflows page is displayed by default.
                Step 4   In the left pane, choose the IBM Storwize folder and click the arrow next to the folder to show all the workflows.
                Step 5   Double-click the Deploy ESXi FC host on IBM Storwize V7000 or Deploy ESXi FCoE host on IBM Storwize V7000 workflow that opens in the Workflow Designer.

                Tasks

                Description

                Create UCS Service Profile

                This task allows to create a new UCS Service Profile.

                Select UCS Server

                This task allows selects UCS Server from the Server Pool or the list of servers according to the conditions specified.

                Associate UCS Server Profile

                This task allows you to select the UCS Service Profile and associate it with the selected UCS Server.

                Set up PXE Boot

                This task allows you to specify PXE Boot parameters required.

                Create IBM Storwize Volume

                This task allows you to create a new volume on the host. The volumes are built from extents in the storage pools, and hence the size can be increased or decreased.

                Create IBM Storwize Host (FC or FCoE)

                This task allows you to create the host.

                Map IBM Storwize Volume To Host

                This task allows you to create a new mapping between the volume and the host, which makes the volume to be accessible for input/output operations to the specified host.

                Generic Configure SAN Zoning

                This task allows you to create SAN zones.

                Power On UCS Server

                This task lets you to power on the UCS Server and this task uses the UCS Service Profile to turn the power on for the UCS Server. (This task can be used only when there is a UCS Service Profile associated with the UCS Server).

                Monitor PXE Boot

                This task monitors the PXE Boot that specifies the maximum amount of time to wait for PXE Boot.

                Modify UCS Service Profile Boot Policy

                This task allows you to specify the new boot policy for the selected UCS Service Profile (modify the UCS Service Profile with the new boot policy that allows to modify the boot order for the UCS Service Profile.)

                Wait for Specified Duration

                This is a generic task that you can use it in the workflow to wait for a specified duration.

                Reset UCS Server

                This task allows you to perform a hard reset on the UCS Server irrespective of the UCS Service Profile associated with the server.

                Wait for Specified Duration

                This is a generic task that you can use it in the workflow to wait for a specified duration.

                Register Host with VCenter

                This task allows you to register a new host within the selected cloud (vCenter) and also place the host exactly where you want to it be on the cluster/datacenter.

                IBM Storwize Thin Provision Volume Datastore

                This task allows you to mount a thin-provision volume datastore on the ESXi host.

                Step 6   Click Execute Now.

                Deploying an ESXi iSCSI Host on IBM Storwize System

                  Step 1   Choose Orchestration.
                  Step 2   In the Orchestration pane, the Workflows tab is displayed by default.
                  Step 3   In the left pane, choose the IBM Storwize folder and click the arrow next to the folder to show all the workflows.
                  Step 4   Double-click the Deploy ESXi iSCSI Host on IBM Storwize V7000 workflow that opens in the Workflow Designer.

                  Tasks

                  Description

                  Create UCS Service Profile

                  This task allows to create a new UCS Service Profile.

                  Add vNic to UCS Service Profile

                  This task allows you to add vNIC to the UCS Service Profile.

                  Add iSCSI vNIC to UCS Service Profile

                  This task allows you to add iSCSI vNIC to the UCS Service Profile.

                  IBM Storwize iSCSI Boot Target

                  This task allows you to configure iSCSI boot targets.

                  Create Service Profile iSCSI Boot Policy

                  This task allows you to configure the iSCSI Boot Policy for the existing UCSM Service Profile. You can set the iSCSI Boot Parameters and create iSCSI Static Targets.

                  Associate UCS Server Profile

                  This task allows you to select the UCS Service Profile and associate it with the selected UCS Server.

                  Create IBM Storwize Volume

                  This task allows you to create a new volume on the host. The volumes are built from extents in the storage pools, and hence the size can be increased or decreased. You can Create volumes of type Generic, Thin-Provision, Mirrored and Compressed volumes.

                  Create IBM Storwize Host (iSCSI)

                  This task allows you to create a host entry by using a WWPN/WWNN number of the remote server and associate one or more HBA WWPNs or iSCSI names with a logical host object.

                  Map IBM Storwize Volume To Host

                  This task allows you to create a new mapping between the volume and the host, which makes the volume to be accessible for input/output operations to the specified host.

                  Set up PXE Boot

                  This task allows you to specify PXE Boot parameters required like OS type for the Host, Host Name, Server IP Address Range, MAC Address, NetMask, Gateway, Name Server, Password and Time Zone.

                  Power On UCS Server

                  This task lets you to power on the UCS Server and this task uses the UCS Service Profile to turn the power on for the UCS Server. (This task can be used only when there is a UCS Service Profile associated with the UCS Server)

                  Monitor PXE Boot

                  This task monitors the PXE Boot that specifies the maximum amount of time to wait for PXE Boot.

                  Modify UCS Service Profile Boot Policy

                  This task allows you to specify the new boot policy for the selected UCS Service Profile (modify the UCS Service Profile with the new boot policy that allows to modify the boot order for the UCS Service Profile.)

                  Wait for Specified Duration

                  This is a generic task that you can use it in the workflow to wait for a specified duration.

                  Restet UCS Server

                  This task allows you to perform a hard reset on the UCS Server irrespective of the UCS Service Profile associated with the server.

                  Wait for Specified Duration

                  This is a generic task that you can use it in the workflow to wait for a specified duration.

                  Register Host with vCenter

                  This task allows you to register a new host within the selected cloud (vCenter) and also place the host exactly where you want to it be on the cluster/datacenter.

                  Step 5   Click Execute Now.

                  Creating and Adding Block Volume Datastore on the ESXi Host

                    Step 1   Choose Orchestration.
                    Step 2   In the Orchestration pane, the Workflows tab is displayed by default.
                    Step 3   In the left pane, choose the IBM Storwize folder and click the arrow next to the folder to show all the workflows.
                    Step 4   Double-click the Create_and_Add_IBM_LUN_as_VMFS_Datastore workflow that opens in the Workflow Designer.

                    Tasks

                    Description

                    Create IBM Storwize Volume

                    This task allows you to create a new volume on the host. The volumes are built from extents in the storage pools, and hence the size can be increased or decreased.

                    IBM Storwize Block Volume Datastore

                    This task allows you to mount a block volume datastore on the ESXi host

                    Step 5   Click Execute Now.

                    Adding Block Datastore over ESXi on IBM Storwize System

                      Step 1   Choose Orchestration.
                      Step 2   In the Orchestration pane, the Workflows tab is displayed by default.
                      Step 3   In the left pane, choose the IBM Storwize folder and click the arrow next to the folder to show all the workflows.
                      Step 4   Double-click the Add new block datastore to ESXI on V7000 workflow that opens in the Workflow Designer.

                      Tasks

                      Description

                      Generic Configure SAN Zoning

                      This task allows you to create SAN zones.

                      IBM Storwize Block Volume Datastore

                      This task allows you to mount a block volume datastore on the ESXi host.

                      Step 5   Click Execute Now.

                      Adding Compressed Datastore over ESXi on IBM Storwize System

                        Step 1   Choose Orchestration.
                        Step 2   In the Orchestration pane, the Workflows tab is displayed by default.
                        Step 3   In the left pane, choose the IBM Storwize folder and click the arrow next to the folder to show all the workflows.
                        Step 4   Double-click the Add new Compressed datastore to ESXI on V7000 workflow that opens in the Workflow Designer.

                        Tasks

                        Description

                        Generic Configure SAN Zoning

                        This task allows you to create SAN zones.

                        IBM Storwize Compressed Block Volume Datastore

                        This task allows you to mount a compressed block volume datastore on the ESXi host.

                        Step 5   Click Execute Now.