Small and medium sized companies can meet these objectives by simply copying data to physical tape and shipping the tapes to an off-site storage facility. They can also replicate data over their network with a disk-based backup system. However, solutions that would suffice for smaller organizations–like tape and many disk-based solutions–lack the performance, capacity, and automation necessary to meet the needs of large, data intensive organizations. This article describes the five key factors to consider when choosing an enterprise disaster recovery solution.