and resource consumption, the allocation of cost for maintenance and improvement needs to be allocated. Fundamentals of EMS, NMS and OSS/BSS So usage is critical information that governs optimal return over IT invest- ment and best business results. OpenView tools for accounting management provide usage information by consolidating fault, performance, and capac- ity data. The accounting management functionality offered by OpenView products map to financial management and capacity management of ITIL. The OpenView products that provide accounting management functionality include OpenView Dynamic Netvalue Analyzer, OpenView Enterprise Usage Manager, and OpenView Storage Area Manager. Provisioning: HP OpenView products provide end-to-end provisioning of the entire IT infrastructure. This includes provisioning of service, network appli- cation, and storage devices. The provisioning is performed to align with busi- ness objectives and goals. The HP OpenView products make it easy to adapt infrastructure to change in business requirements by editing or reconfiguring the entities using simple business rules. Provisioning function in OpenView maps to Configuration management of ITIL. Service provisioning products from OpenView include OpenView Service Activator and OpenView TeMIP. Some of the OpenView Configuration Management (OVCM) products are OVCM Application Manager, OVCM Inventory Manager, OVCM OS Manager, and OVCM Patch Manager. Similarly the OpenView Storage (OVS) management prod- ucts include OVS Area Manager, OVS Data Protector, OVS Mirroring, and OVS Mirroring Exchange Failover Utility. In addition to applications on the network, ser- vice, and business layers, OpenView even has customer centric products like OpenView Web Transaction Observer and OpenView Internet Services that can provide to the customer, personalized views of the services enjoyed by the specific customer. 13.5 IBM Tivoli IBM Tivoli consists of a management framework and a set of enterprise products that use the framework as the base infrastruct