Is the CMDB Promise Achievable?
Let’s face it. The configuration management database is really the Holy Grail of IT Service Management. Business services are defined that support one or more business processes. These business services connect to various software and hardware elements (or infrastructure services) that represent connectivity, processing and storage capabilities used to support the business service. Ideally through an extension of the CMDB referred to as the Coniguration Management System (CMS) you might also connect supplier contracts (underpinning contracts), OLA’s, and SLA’s. Additionally you would include links to incidents, problems and changes. The end goal would be to have optimal visibility to see what services you are supporting along with all of the past, present and future activity regarding these services. It is the IT data warehouse that transforms data from multiple IT management operational data store so that key IT management decisions can be made.
The vision for a CMDB/CMS strategy is spot on as a critical underpinning for holistic service management. The execution piece is very tricky. And, in the case of the CMDB, this is a consummate example of the importance of ITIL’s guidance on breaking vision down into manageable, achievable interim goals.
For organizations that have substantial infrastructure and have no current tracking mechanism, be realistic about the results you hope to achieve. Auto discovery tools can be helpful but are also very complex and require you to access all points in the network to give you comprehensive results. A structured, slow but reliable approach to getting your arms around the relationship models is to target a handful of services to begin with and do one service at a time. Once each service is validated in the CMDB assuring that you are managing it under your change management process is key.
Identifying business critical services and prioritizing them within this strategy will allow you gain better control and visibility to the areas that are most important to your enterprise as the first phase of this process. Once you’ve got these critical services captured, you can tackle others. In a large organization, this discover & control method will be a multi-year process, but the approach makes the CMDB promise achievable.
