Brian Smith, network administrator at Advanced Energy Technology (AET), has been given   of implementing the migration of a large data centre to a new office location. Careful planning is needed because AET operates in the highly competitive petroleum industry. AET is one of five national software companies that provide an accounting and business management package for oil jobbers and gasoline distributors. A few years ago, AET jumped into the “application service provider” world. Their large data centre provides clients with remote access to AET’s complete suite of application software systems. Traditionally, one of AET’s primary competitive advantages has been the company’s trademarks IT reliability. Due to the complexity of this project, Brian will have to use aparallel method of implementation. Although this will increase project costs, a parallel approach is essential if reliability is not to be compromised