About the discovery host for enclosures
A Windows or Linux host is assigned the Discovery host role to discover the arrays in the data center. Infrastructure Management Server (IMS) is a discovery host by default. In addition to the IMS you can configure additional discovery hosts to offload the discovery and monitoring of multiple enclosures rather than discovering all of them from a single IMS.
A discovery host is also required if the IMS does not have direct connectivity with the enclosures.
When you add the enclosure to the IMS, you can specify a discovery host in the Add Enclosure wizard. The discovery host must be added to the IMS first.
The discovery host can be any machine with supported operating system as required by the VRTSsfmh package. You also need the administrative credentials of the machine to install the VRTSsfmh package on it. The IMS connects to this host using the 5634 port.
The discovery host also helps in situations where the IMS cannot satisfy following pre-requisites for the discovery of required enclosures:
Specific native tools or vendor CLIs for enclosure management are required. For example, EMC Solutions Enabler for Symmetrix arrays.
IMS does not have direct connectivity with the arrays.
Note:
Discovery host is not required for HPE 3PAR, NetApp SnapMirror, IBM SVC Global Mirror, and EMC RecoverPoint. Only Discovery Host is required for discovery and management of EMC SRDF and Hitachi TrueCopy/HUR replication configurations.
Note:
Replication appliances are added in a different way from other types of asset infrastructure.