Before we get started on the details of how to actually perform an upgrade, there are a few common threads that affect most environments. The basic issues that need to be planned for ahead of time are:
In the following sections we’ll discuss these issues to identify and plan for in your environment before and during an upgrade of an existing server.
First and foremost, before you upgrade any server, do a full, complete, and verified backup. We don’t care what you use for a backup program or a backup media. But whatever you choose, be certain that you have verified the backup by restoring—either by restoring the entire backup to ...