Although this is not truly a step by step installation, the wizard will guide you through the installation. Microsoft makes this process easy for the average user. Key items involving installation are mentioned in the paragraphs that follow.
The installation of Microsoft's SQL 2008 in VirtualBox can be done with an ISO of the installation files or with the Microsoft SQL Server 2008 installation CD / DVD. SQL Server 2008's installation will need Microsoft's Dot Net Framework 3.5 downloaded and installed on your Microsoft Server 2008. Adequate disk space will be needed (approximately 1.3 GB).
During the setup of SQL, keep in mind to look and analyze the Performance Monitor or Resource Monitor on the host computer. This plays a key role in examining resources that are being used. A SQL Server being used in a production computer will need more RAM than a SQL Server installed on a computer that is used as a 'testing' computer.
After clicking on the setup of SQL, the Microsoft wizard will guide you through the installation. The examination of setup support rules will follow and you may receive warnings during the checking of these processes. These warnings will contain detailed information on how to take care of any problems (see pictures below). Once the warnings and these items are taken care of, you will then be taken to an Instance Selection screen where can check what you want to be installed.
After the selection of your instance (items you want installed), you should select which hard drive to install SQL. Generally, SQL should be installed on a second hard drive for better performance but can be installed on a single drive.
During the installation process, you will also setup accounts for the use of SQL. (More logins can be made after the installation.) It is important to select your user(s) carefully and to make complex passwords to guard security of assets kept in your database.