Stork/ PX-backup prerequisites

Hello all,

could you please help and clarify the stork plugin
deployment prerequisites in order to properly
attach/register clusters (other kubernetes distributions) to installed PX-Backup (with PX-Central)?

In the deployment file downloaded within Stork install commands, there are 3 replicas, so does this mean, the 3 worker nodes are mandatory and we simply cannot attach clusters with fewer worker nodes?

The PX-Backup on prem installation requirements are explicitely mentioning 3 worker nodes. Is this 3 somehow related to stork prerequisite? Or is it totally separate?

Many thanks for your advices/help

Kind regards,