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Chapter 7. Highly Available controller pairs
IBM System Storage N series Highly Available (HA) pair configuration consists of two nodes
that can take over and fail over their resources or services to counterpart nodes. This function
assumes that all resources can be accessed by each node. This chapter describes aspects of
determining HA pair status, and HA pair management.
In Data ONTAP 8.x, the recovery capability that is provided by a pair of nodes (storage
systems) is called an
HA pair. This pair is configured to serve data for each other if one of the
two nodes stops functioning. Previously with Data ONTAP 7G, this function was called an
Active/Active configuration.
This chapter includes the following sections:
HA pair overview
HA pair types and requirements
Configuring the HA pair
Managing an HA pair configuration
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