A customer needs to have arrays installed and configured with ActiveCluster and ETH replication.

To properly configure a FlashArray forActiveCluster with Ethernet replication, a total of9 IP addressesare typically required per array. If the installation document currently lists only3 IP addresses, the Implementation Engineer needs6 additional IP addresses.

The breakdown of the requirement is as follows:

Management (5 IPs):Standard ActiveCluster best practices mandate fully redundant management connectivity. This includes 1 Virtual IP (VIP) and 4 Physical IPs (CT0.eth0, CT1.eth0, CT0.eth1, and CT1.eth1). The initial "3 IP addresses" provided usually correspond to the basic setup (VIP, CT0.eth0, CT1.eth0), leaving a deficit of 2 management IPs (for the eth1 redundancy).

Replication (4 IPs):ActiveCluster over Ethernet requires dedicated replication ports separate from management. The standard configuration utilizes two physical ports per controller for redundancy (e.g., CT0.eth2, CT0.eth3, CT1.eth2, CT1.eth3), requiring 4 unique IP addresses.

Therefore, 2 additional management IPs + 4 replication IPs =6 additional IPsrequired to meet the strict redundancy standards for an ActiveCluster deployment.