Speed up cluster scale up

[cw9]

Hi,

Is there a way to config the speed of rolling upgrade? In our environment it takes about 2-3minutes per node to restart, so when we are trying to scale up a cluster from e.g.100 nodes to 101 nodes, we need to wait for the first 100 nodes to be restarted first before the 101st node can be added, which takes a long time.

Is there a way to speed up the process?

Thanks