Adding a host system connection

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You can add a connection to one or more host systems to the Copy Services Manager configuration.

About this task

Prerequisites: You must have Administrator privileges or Server Management privleges to add a host system connection.
Follow these steps to add a host system connection:
Important: The z/OS host connection is made to a single system which may be part of a sysplex with multiple systems. When using the host connection to manage HyperSwap or Hardened Freeze, it is recommended that you only connect to up to two systems in that sysplex for the purposes of redundancy. Connecting to more than two systems in the same sysplex may result in extra processing on the Copy Services Manager server as each connection will process events and configuration information for the same set of volumes.

Procedure

  1. In the menu bar, click Storage > Host Connections.
  2. On the Host Connections page, click Add Host Connection.
  3. In the Add Host Connection window, enter the following information:
    Connection Type
    Select the host system type: z/OS® or AIX®.
    Host name / IP address
    Enter the host name or IP address for the host system.
    Port
    Enter the port for the host system.
    For z/OS, the port number must be the same as the port number that is specified for the HyperSwap® management address space IOSHMCTL SOCKPORT parameter on the z/OS system. For more information about the SOCKPORT parameter, see the IBM® Copy Services Manager Installation and Configuration Guide.
    For AIX, use the default port number 9930 unless the port was modified in Subsystem Device Driver Path Control Module (SDDPCM).
    User name
    Enter the user name. The User name field is displayed only for z/OS host systems. The user name and password must be the same name and password that are specified in the Resource Access Control Facility (RACF®) settings on the host system. For more information about the RACF settings, see the IBM Copy Services Manager Installation and Configuration Guide.
    Password
    Enter the password. The Password field is displayed only for z/OS host systems.
  4. Click Add Host.

Results

The host system is displayed on the Host Connections page. If connection to the host system is successful, the status Connected is displayed. If the connection to the host system failed, the status Disconnected is displayed.
Note: On z/OS host systems, the TCPMAXRCVBUFRSIZE must be set to a minimum of 32K to accommodate the maximum size of an Secure Sockets Layer (SSL) record. Otherwise AT-TLS fails during the initial handshake.
When upgrading or restoring Copy Services Manager, if the host IP connection does not connect to the z/OS IP server, check the install dir/liberty/wlp/usr/servers/csmServer/properties/zosclient.properties from earlier version, and validate that the property is not using the SSLv3 protocol. To change the protocol from SSLv3 to TLSv1.2, run the chsystem command as follows:
csmcli> chsystem -f zosclient -p protocol -v TLSv1.2
.