The microsoft technet article for using the detach/attach method for migrating from Sharepoint 2007 to 2010 is here, http://technet.microsoft.com/en-us/library/cc263299.aspx.
However, I would like to know if it would be possible to not "detach" the original database from Sharepoint 2007 and leave the Sharepoint 2007 system operational. Instead is it possible to do the following procedure?
- Backup the Sharepoint 2007 DB.
- Install Sharepoint 2010 on new separate Windows Server 2008 R2 with SQL Server 2008.
- Restore the DB on separate Windows Server 2008 R2 VM with SQL Server 2008.
- Attach content database to new Sharepoint 2010 system via powershell commands.
I.e. I want to leave the existing sharepoint site live without having to bring it down and then create a new sharepoint site on a separate system using the same content. Is this possible?