Differences when updating software on an eight-node or four-node MetroCluster configuration

The MetroCluster software update process differs, depending on whether there are eight or four nodes in the MetroCluster configuration.

A MetroCluster configuration consists of one or two DR groups. Each DR group consists of two HA pairs, one HA pair at each MetroCluster cluster. An eight-node MetroCluster includes two DR groups:

The MetroCluster software update procedure involves upgrading or downgrading one DR group at a time.

For four-node MetroCluster configurations:

1. Update DR Group One:

   1. Update node_A_1 and node_B_1.

   2. Update node_A_2 and node_B_2.

For eight-node MetroCluster configurations, you perform the DR group update procedure twice:

1. Update DR Group One:

   1. Update node_A_1 and node_B_1.

   2. Update node_A_2 and node_B_2.

2. Update DR Group Two:

   1. Update node_A_3 and node_B_3.

   2. Update node_A_4 and node_B_4.