ITIL DSL DML and Straightedge
Success with ITAM and dependent projects like SAM/HAM, is based on having accurate procurement data (what’s been purchased, how can it be deployed, what usage restrictions/benefits there are etc.) The usage and deployment data (what is actually installed) is also needed for the compliance reporting but is not part of the DSL/DML structure.
In ITIL terms the DSL (Definitive Software Library) contains software licence information. The DML (Definitive Media Library) is a reference to the physical media or the location of the software product. Whilst in ITIL V3 the two terms (DSL and DML) have been amalgamated and called the DML, for practical purposes it is worth keeping to two entities separate with a defined link simply because of who has responsibility for managing the two sets of data.
To achieve maximum accuracy, the DSL ideally should be managed by the procurement source, the DML by a secure function in the IT service delivery organisation.
With Straightedge, you get the best of all worlds:
- Intuitive and complete source data management for the DSL
- Linkage and reference point to the DML library
- Documentation for proof of purchase/licence
- Extendable link to usage data to give compliance reporting
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