The storage subsystemis managed through an Ethernet connection on a host instead of using the Ethernet connections on each controller. The storage management station communicates with the storage subsystem through the host that has Host-Agent management software installed. The host agent takes requests from the storage management station through the Ethernet connection to the host, and then sends them to the controllers in the storage subsystem through the I/O connections between the host and storage subsystem. The controllers also use the I/O connections to send event information back to the storage management station.
To manage a storage subsystem through a host, you must define the host name or IP address of the host that is connected to the storage subsystem(s). (See the Storage Management SoftwarePlanning Guide for more information.) You can then use the Edit >> Add Device option or Automatic Discovery option in the Enterprise Management Window to include the host (and attached storage subsystems) in the management domain. The Enterprise Management software uses the host's name or IP address to communicate with and find each storage subsystem (and its controllers) connected to that Host. The Device Tree in the Enterprise Management Window displays the storage subsystem under each host that provides a network management connection to the storage subsystem.
Notes:
Another way to manage a storage subsystem is through the Ethernet connection on each controller in the storage subsystem. For more information, see Directly Managedstorage subsystem.
You can manage a storage subsystem using one or both types of network management connections (direct or host-agent). The Enterprise Management Window will display the appropriate management connections in its Device Tree View and Device Table.
You can configure multiple hosts to provide network management connections to a storage subsystem. In this case, the storage subsystem appears in the Device Tree under each host that is providing a management connection.