Storage connections

You must create a connection from the IBM Copy Services Manager management server to each storage system.

The following types of connection are available. The connection type that you can use depends on the storage system type.

Direct Connection: This connection type is available for all storage systems other than IBM® System Storage DS8700 or later storage systems or IBM DS8000 storage systems that are on an Internet Protocol version 6 (IPv6) network.
Hardware Management Console (HMC) Connection: This connection type is available for System Storage DS8700 or later storage systems and IBM DS8000® storage systems that are on an IPv4 or IPv6 network.
IBM z/OS® Connection: This connection type is available for IBM DS8000 storage systems. If the storage system is connected to a z/OS system on which Copy Services Manager is installed, a native connection is automatically added. If the storage system is connected to another z/OS system, you can use an IP connection to connect to the system.

A single storage system can be connected by using multiple connections for redundancy. For example, you can connect to a IBM DS8000 storage system by using an HMC connection and a z/OS connection.

When you add a storage connection to the Copy Services Manager configuration, the storage system and the connection are added to the active management server and the standby server configuration.

Important: If the Metro Mirror heartbeat is enabled, do not connect to an IBM DS8000 storage system by using both an HMC connection and a direct connection. If you have both types of connections and the direct connection is lost, the session changes to the suspended state even though the HMC connection is still valid. If both connections are lost and the session is in the suspended state, restart the session when connectivity is regained to synchronize the session with the hardware.