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Scale Up#

Scaling Up VS. Scaling Out

Adding Additional Resources

There are several methods to add additional resources to your VergeOS environment. It is recommended that you consult with your sales representative on planning for the option that makes the most sense for your environment.

Here are a few key things to remember when planning for expanding the system:

Scale Up

Expanding resources on current nodes:

When adding additional drives into existing nodes: - It is important to add an equal number of drives to all nodes in that cluster.

When adding additional memory into existing nodes: - It is important to properly place a node into maintenance mode before powering the node off. - This ensures that all running workloads are gracefully migrated to other nodes in the system.

Scale Out

Expanding by adding additional nodes:

Key points to remember: - Clusters must contain two or more nodes of the same configuration. - When adding a new node to a system, N+1 redundancy needs to be maintained to ensure high availability. - Adding a new node needs to match the configuration of another node in the cluster: processor, memory, and physical disk drives should match the cluster.

If adding a matching node is not an option: - A new cluster can be added to the system. - However, every cluster must contain two or more nodes of the same configuration.

Remember, consulting with your sales representative is crucial for planning the expansion that best suits your environment.

Document Information

  • Last Updated: 2023-01-24
  • VergeOS Version: 4.12.6

Scaling Up a vSAN

To scale up a vSAN, follow the steps below. However, before proceeding, ensure that your current vSAN has at least 50% free capacity. If the free capacity is less than 50%, and you are not doubling the number of drives, you will need to scale out by adding a node to the vSAN.

Steps to Scale Up

  1. Physically add the drives into the available empty slots on the node you want to scale up.

  2. Log in to the host system's UI and select the appropriate cluster you want to scale out from the top compute cluster section on the home page.

  3. Select the node that you are scaling up.

  4. Refresh the system to recognize the new drives: - Select Refresh from the left menu, and choose Drives & NICs from the dropdown. - Confirm by selecting Yes.

  5. Select the Scale Up option on the left menu.

  6. The page will now show the newly inserted drives in an offline state. Select the drive(s), then under Node Drives, select the Scale Up function.

  7. Select the appropriate tier for the drive(s) and submit.

scaleupvsan5.png

Important

  • All drives in a tier must be alike. If a drive of an incorrect size is added to an existing tier, the tier will only be able to use the space of the smallest drive.
  • Ensure that your vSAN has at least 50% free capacity unless you are doubling the capacity. If the free space is less than 50% and you are not doubling the drive count, consider scaling out by adding a node.

Upon completion, the screen will refresh and the drives will disappear from the view. Go back to the main page, where you will see the vSAN tiers change color to yellow, indicating that it is in a repair state. This is expected, and the vSAN will return to a green/healthy state after a few minutes, showing the newly added tier or increased space on an existing tier.

Repeat these steps for each node as necessary.

Document Information

  • Last Updated: 2024-08-29
  • vergeOS Version: 4.12.6