Pfizer Central Research, Sandwich, England has developed an Electronic Archive to support the maintenance and preservation of electronic records used in the discovery and development of new medicines. The Archive has been developed to meet regulatory, scientific and business requirements. The long-term preservation of electronic records requires that migration strategies be developed both for the Archive and the records held within the Archive. The modular design of the Archive will facilitate the migration of hardware components. Selecting an appropriate migration strategy for electronic records requires careful project management skills allied to appraisal and retention management. Having identified when the migration of records is necessary, it is crucial that alternative technical solutions remain open.