Patching

Patching S2D clusters is a common question. This first part covers offline patching—shutting everything down, patching all nodes simultaneously, and starting back up—with scripts like Stop-S2DCluster and Start-S2DCluster to automate the process.

Discovered a bug where physical disks stay in maintenance mode after applying September CU to S2D clusters. This breaks CAU patching and causes capacity issues. Here’s how to recover and avoid the problem.