This paper outlines the key factors to consider when determining whether the mainframe or a distributed platform is the most cost effective option for a particular workload. These factors include:
• Define a clear scope and objectives
• Apply a standard financial analysis method
• Allocate accurate mainframe and distributed costs
• Compare IT management software. Don’t miss these hidden costs, examples from case studies are provided in this paper.
• Include disaster recovery (DR) costs
• Hardware sizing drives many costs and must be accurate
• Consider cost savings of mainframe’s specialty hardware features
• Identify z/OS software savings opportunities
• Identify all platform support staff
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