Installation and Upgrade > Installation and Configuration Guide > Using the PTC Solution Installer > Installing Windchill Solutions > Launching the PTC Solution Installer > Specifying the Installation Directory
  
Specifying the Installation Directory
Choose the base installation directory for your products. The base installation directory is the parent directory in which subdirectories are created for your optional products and platform components.
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The Installation Directory for the SQL Server Configuration Utility is the location where both the datafiles and transaction log file will be initially installed by default. Best practice for a production SQL Server deployment is use separate disks (or logical volumes in a striped array) for the transaction log and the datafiles, so this will be done in a later step after the initial installation is complete.
You can change each individual subdirectory to meet your needs. By default, all products and components are installed under the Base Installation Directory. You can change this by editing the installation directory in any given field. To continue propagating changes throughout all installation paths, enter further changes under the Base Installation Directory field.