This article introduce the best practice to remove a physical node from grid.
There are several possible reasons to remove a physical node from a grid including hardware upgrades and server failures. When a server hardware upgrade is needed the original server will no longer be part of the grid and so it should be removed. If only a portion of the existing server will be upgraded it still may be necessary to remove the node completely and re-add the server after the upgrade. Server hardware failures can also require that a server be physically removed from the grid while it is repaired. When a grid node is expected to be down for repair for an extended period of time it should be removed from the grid configuration and re-added after repaired. If the file system on this node are already compromised or the server has cashed then not all steps below apply.
The steps to remove