High availability (HA)

Content Software for File User Guide

Part Number

To support HA, the Content Software for File system must be configured with no single component representing a single point of failure. Multiple switches are required, and servers must have one leg on each.

HA for servers is achieved either through implementing two network interfaces on the same server or by LACP (ethernet only, modes 1 and 4). A non-LACP approach sets a redundancy that enables the Content Software for File software to use two interfaces for HA and bandwidth.

HA performs failover and failback for reliability and load balancing on both interfaces and is operational for Ethernet and InfiniBand. Not using LACP requires doubling the number of IPs on both the backend containers and the IO processes.

When working with HA networking, labeling the system to send data between servers through the same switch is helpful rather than using the ISL or other paths in the fabric. This can reduce the overall traffic in the network. To label the system for identifying the switch and network port, use the label parameter in the cluster container net add command.

Note: LACP (link aggregation, also known as bond interfaces) is currently supported between ports on a single Mellanox NIC and is not supported when using VFs (virtual functions).