Many companies use Microsoft® BizTalk® Server to process the core data that their business depends on. These businesses have no room for error, and a prolonged downtime due to a simple hardware outage could mean losing a large amount of money. BizTalk Server provides guaranteed data delivery by using a robust transactional support that incorporates the ACID attributes: atomicity, consistency, isolation, and durability. In addition, the Microsoft Windows® 2000 Cluster service should be used to safeguard against hardware failure of any server that is used to persist data to a local disk. Both Windows 2000 Advanced Server and Windows 2000 Datacenter Server include this component. BizTalk Server supports active/passive clustering using Microsoft Windows 2000 Cluster service, providing high availability in Orchestration scenarios.