I have SharePoint 2013 Standard Edition installed in our servers 1 App, 1 WFE, 1 Workflow Server. Very soon we are moving on to a plan to upgrade the farm with Sp1 upgrade. Before doing that i need to come up with the plan. I have managed to locate the installation files and have went through all the fixes and bugs included on this update, set up a communication plans, Test Cases after the upgrade. I am going to first install this update onto the Dev server,then QA and finally to Prod. As we all know with every upgrade there is a risk of malfunctioning or unexpected error, therefore i need to come up with the Roll back Plan in such case. Does Sp1 has some sort of Roll back Plan to protect my users and farm against possible malfunctioning.
Aside from that i would really appreciate your experiences and lesson learnt during the upgrade.