There are three process paths to moving to a new Teradata Database Release. As you consider moving to a new Teradata Database Release, you will need to determine which process path you should use:
- Database Upgrade
- Migration
- Fresh Installation
Here are basic definitions for the process paths:
- Database Upgrade
- A database upgrade is the process of modifying the Teradata Database software with a new version of the software on a computer system that is already running a previous version. The user data remains in place on the disk arrays.
- Migration
- A migration process involves archiving user data from a source system, then restoring that data to a destination system. The destination system must have Teradata Database installed before the migration process occurs.
- Fresh Installation
- A fresh installation is generally the first instance of installing Teradata Database on a computer system. Teradata performs the initial installation on every system it manufactures. In some cases, such as when changing to a different operating system, a fresh installation is performed at a customer site on a system that has been reconfigured and does not currently contain Teradata Database software.