Figuring the number of IP addresses for a two-node cluster

How many IP addresses are required for a two-node cluster with one primary LAN, a backup LAN and two applications...

Step 2 of 2:

You forgot to provide an Email Address.

This email address doesn’t appear to be valid.

This email address is already registered. Please login.

You have exceeded the maximum character limit.

Please provide a Corporate Email Address.
- I agree to TechTarget’s Terms of Use, Privacy Policy, and the transfer of my information to the United States for processing to provide me with relevant information as described in our Privacy Policy.
Please check the box if you want to proceed.
- I agree to my information being processed by TechTarget and its Partners to contact me via phone, email, or other means regarding information relevant to my professional interests. I may unsubscribe at any time.
Please check the box if you want to proceed.

that are cluster aware?

The answer depends on the clustering software you use, since at least one (VERITAS cluster server) does not require IP addresses for its heartbeat links. And different clustering software may have other requirements or restrictions on IP allocation. But, assuming the maximum number of IPs, you'd need:

Two in each node for heartbeats (total of 4)

Each node should have its own IP address on the public network for administrative purposes so that the nodes can be addressed even if they do not have any applications running at a particular time (2 more)

Each application will need its own IP address, so that it can failover separately between the nodes (2 more)

That sounds like eight to me. Good luck!

Editor's note: Do you agree with this expert's response? If you have more to share, post it in one of our .bphAaR2qhqA^[email protected]/searchstorage>discussion forums.

VSphere High Availability explained: Monitor VMs and applications

Hyper-V vs. vSphere high availability features

Prevent software failures with vCenter Server High Availability

VMware's vCenter HA makes up for vCenter Server shortcomings

Establish a business continuity team to get the full picture

Castellan Solutions says COVID-19 forced BCDR rethink

Create an incident response plan with this free template

Druva gets $147M boost, brings valuation to more than $2B

Look for these critical features in a ROBO backup tool

Dell EMC adds cloud-based backup to PowerProtect lineup

VMware vSAN storage update eyeballs HCI scaling challenges

HPE SimpliVity gains cloud backup and Kubernetes CSI plug-in

Top hyper-converged systems and composable infrastructure of 2020