A customer needs to have arrays installed and configured with ActiveCluster and ETH replication. The installation document contains 3 IP addresses. How many additional IP addresses are needed?
To properly configure a FlashArray for ActiveCluster with Ethernet replication , a total of 9 IP addresses are typically required per array. If the installation document currently lists only 3 IP addresses , the Implementation Engineer needs 6 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 IPs required to meet the strict redundancy standards for an ActiveCluster deployment.
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