How to use this checklist
For a routine change to a running workload. The purpose is to make the change reversible and observable before it is applied, not after.
Mark an item N/A when it genuinely does not apply, and write down why. An unexplained N/A is the most common way a checklist stops working.
Sign-off
Every critical item must pass. A failing critical item blocks the deployment or the maintenance window; it is not a note for later. Record the date, the reviewer, and the disposition of every item that did not pass.