Displaying system information and interfaces of an MU

You obtain the system information and interfaces of a Management Unit using the associated Information menu. Options provided in this menu:

• Displaying system information of the MU

• Displaying and changing IP interfaces of the MU

• Displaying and resetting FC interfaces of the MU

• Displaying multipath disks of the MU

• Displaying CRD disks of the MU

Displaying system information of the MU

>	Select Hardware -> Units -> [<se server> (SE<model>) ->] <unit> (MU) -> Information, System tab:

In the case of System disks, Normal means that the mirror disk is decoupled. In maintenance means that the mirror is active for the system disks, and the data is being synchronized (in preparation for a software update).

Displaying and changing IP interfaces of the MU

>	Select Hardware -> Units -> [<se server> (SE<model>) ->] <unit> (MU) -> Information, IP interfaces tab:

Changing the packet length in the case of LOCLAN and PCI interfaces

In the IP interfaces tab of the Management Unit you can change the packet length. In the case of a PCI interface, normal operation is required for this purpose, i.e. the Status UP is displayed.

>	Click the Change icon in the row with the required IP interface, and in the subsequent dialog box select the required packet length.

Displaying and resetting FC interfaces of the MU

>	Select Hardware -> Units -> [<se server> (SE<model>) ->] <unit> (MU) -> Information, FC interfaces tab:

The FC interfaces tab displays three groups with information on the FC interfaces:

• FC interfaces provides information for each FC interface of the MU on the host controller used, the plug-in position (slot and port), the Type (firmware and revision status), the local WWPN (World Wide Port Number) of the FC interface, and the connection channel to the Server Unit /390 (Channel Path ID - CHPID). The hardware status of the FC interface is also displayed (UP / DOWN). For MUs without SKP functionality the columns HC and CHPID are not displayed.

• FC targets contains the WWPNs of the FC interfaces on the accessible FC controllers (targets). The WWPN identifies a port unambiguously worldwide.

• FC paths contains information on the connections between the units and the accessible FC controllers. Address information on the end points of the various connections is displayed.

Resetting the FC interface

On the FC interfaces tab of the management unit, you can reset the individual single FC interfaces. The devices connected to the FC interface are rescanned. After this action, the displayed number of connected devices to this interface can change.

Displaying multipath disks of the MU

For the FC disks the Multipath disks tab displays the status of the paths from the unit to the storage system and the end points of the paths, i.e. the interfaces on the storage system and on the unit. The columns Name and Serial number of the storage system are supplied only, if STORMAN is properly configured and the storage data is updated. For this, the Update storage data dialog in the Hardware -> Storage menu must be called.

>	Select Hardware -> Units -> [ <se server> (SE<model>) ->] <unit> (MU) -> Information, Multipath disks tab:

Displaying CRD disks of the MU

The CRD disks tab in the Information menu displays the status of the internal and, if existing, the external CRD disks (configuration disks) of the Management Unit.

Purpose and operation of CRD disks are described in section "External CRD disks".

>	Select Hardware -> Units -> [<se server> (SE<model>) ->] <unit> (MU) -> Information, CRD disks tab:

The table lists the CRD disks with the current status. The internal CRD disk is listed before any possibly existing external CRD disks. The Description column can contain additional information on the use of the CRD disk.