NAS b3000 v2 - Quick Start Guide (326190-002)

Product Overview

23NAS b3000 v2 Quick Start Guide

NAS b3000 v2 Clustered Deployment

In a clustered deployment, network connections are divided into two categories:

cluster maintenance segments and client data segments. The default shipping

configuration contains a two-port embedded NIC that provides one port for cluster

maintenance and one port for client data. An additional management port for

remote console and diagnostics is provided via the iLO port. HP recommends that

this connection be placed on a management LAN separate from the corporate

infrastructure.

The cluster maintenance segment is also known as the heartbeat connection

between the nodes. In standard configurations, this connectivity is obtained by

using a crossover network cable. The same effect can be achieved by placing the

heartbeat ports on their own switch or VLAN, as illustrated in Figure 4 as Eth0.

The purpose is to isolate and guarantee the connectivity between the nodes

without interruption. If interruption occurs, the remaining cluster node will

assume that the other node has gone down and initiate a failover. A second cluster

heartbeat path is often recommended as a redundant path. The redundant path is

often done over one of the remaining network segments and is not dedicated.

The client data segments of a cluster must reside on identical network segments

for each node. As illustrated in Figure 4, Eth1 from both nodes is shown on the

same segment. This co-location on the same segment allows cluster resources

such as file shares to failover to the second node and continues to provide

availability to the resources. The failed resource will have the same IP address

after the failover and therefore must have a port corresponding to the identified

subnet of the IP address present on both nodes.

The NAS b3000 v2 supports the use of NIC teaming in clustered configurations.

All recommendations from the sections earlier in this guide still apply.

Figure 4: NAS b3000 v2 cluster deployment

Integrated Lights-Out Port (iLO Eth)

Client Subnet 1 (Eth 1)

Cluster Heartbeat