Users Guide

Figure 13. Path redundancy: different directors
Management server
Each metro node server has embedded management server. You can manage both clusters in a metro node Metro configuration
from a single management server. The management server acts as a management interfaces to other metro node components
in the cluster. Redundant internal network IP interfaces connect the management server to the public network. Internally, the
management server is on a dedicated management IP network that provides accessibility to all major components in the cluster.
The larger role of the management server includes:
● Coordinating data collection, metro node software upgrades, configuration interfaces, diagnostics, event notifications, and
some director-to-director communication.
High Availability with metro node Witness
Metro node CWS can be deployed on virtual machine. For more details, see the Configuration Guide for Cluster Witness
available at https://solveonline.emc.com/solve/home/74
The following figure shows a high level architecture of metro node Witness. The metro node Witness server must reside in a
failure domain separate from cluster-1 and cluster-2.
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Integrity and resiliency