This component is deployed to provide persistent storage replicated across the nodes in an easy fashion.
Nice to knows
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-[volume-expansion is offline expansion only.](https://github.com/longhorn/longhorn/issues/2749#issuecomment-872072957) This means you have to scale down deployments to expand volumes.
- Adjusting the defaults in the helm deployment, doesn't adjust them in production. Production is managed with `settings.longhorn.io` objects which are basically a key-value CRD.
- Longhorn requests by default 12% of your node CPUs for each instance-manager. This can easily exhaust your CPU resources in the cluster. Adjust this setting can only be done **when all your volumes are detached**, which implies scaling down all deployments that use volumes. (The deployment in this directory adjusted the CPU requests to 2%).
