My understanding is that the biggest differentiator between Assets and CIs is the financial component. I use the following definitions:
Asset - A Component with a financial value with an attached depreciation rate. Assets by themselves do not have relationships and their lifecycle lasts until the value=0.
Configuration Item - A component of an IT system treated as a self contained unit for the purposes of identification, Incident and/or Problem management, and Change control. CIs may be hardware, documents, software, or a logical grouping of. CIs have relationships and may not have a financial value. A CI’s lifecycle lasts until the component becomes obsolete and is removed from the environment by a Change Order.
A component could be an Asset or CI or both. Finance defines an Asset as an Item >= $1000 initial value. So here are our examples:
Asset=YES, CI=YES : Server, Switch, Plotter - all >= $1000 value
Asset=YES, CI=NO : Furniture, Vehicle, Server Rack
Asset=NO, CI=YES : Documentation, Cluster, Server < $1000 value, Workstation < $1000 value
Asset=NO, CI=NO : Should not be in CMDB (Mouse, Keyboard, Monitor < $1000 value)
We chose to not include anything in the CMDB that is not a CI. Of course, if not managed the CMDB will become a substitute for all types of lists typically contained in Excel spreadsheets and this creates a lot of noise! -fred SDM12.7