Chapter 7. Highly Available Controller Pairs - IBM N Series Hardware Manual

Highly Available controller pairs
Chapter 7.
IBM System Storage N series HA pair configuration consists of two nodes that are able to
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 addresses aspects
of determining HA pair status, and HA pair management.
In Data ONTAP 8.x, the recovery capability provided by a pair of nodes (storage systems) that
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
© Copyright IBM Corp. 2012. All rights reserved.
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