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Link Bandwidth and Latency

 

To configure high-availability (HA), you must consider the bandwidth and latency between the primary and secondary HA hosts.

If your HA cluster is using disk synchronization, the following conditions must be met:

  • The connection between the primary and secondary HA host has a minimum bandwidth of 1 gigabits per second (Gbps).

  • The latency between the primary and secondary HA host is less than 2 milliseconds (ms).

Note

If your HA solution uses a wide area network (WAN) to geographically distribute the hosts in your cluster, latency increases with distance. If latency rises above 2 ms, then system performance is affected.