Should I Upgrade to Sharepoint 2010 | Online CBT Training
It’s normal to want to upgrade to the latest and greatest of any given product. SharePoint 2010 is such a tremendous improvement over 2007 that many organizations that held off on 2007 are now deploying 2010 into their environments. At the same time organizations that have 2007 already are looking into upgrading their SharePoint to the latest flavor. But that can be a tricky process. There are different ways to accomplish the task.
In-place Upgrade: You can upgrade your existing SharePoint Servers (so long as the hardware and software needs are met) with an in-place upgrade. Keep in mind that this is going to take your SharePoint offline during the process so a late night or weekend upgrade would be best.
A Database Attach: This is less of an upgrade and more of a migration. You basically detach your databases from your existing SharePoint and attach them to a new web application on a new server. The benefits here are no downtime for your sites but the database attach method isn’t quite as smooth and all encompassing as the in-place would be.
There are hybrid concepts for these upgrades/migrations and certainly a great deal of planning should go into it to ensure data loss is avoided. You can read more about this subject in the InfoWorld Enterprise Windows column by ClipTraining’s J. Peter Bruzzese entitled “Don’t upgrade to SharePoint 2010 until you read this.”