Gartner Research

Follow a Multistep Process for Deciding Whether a Migration Off the Mainframe Is Warranted

Published: 22 May 2013

ID: G00251621

Analyst(s): Mike Chuba

Summary

Migration off the mainframe may or may not be the right decision for your organization. Infrastructure and operations leaders must understand the implications of key factors such as time, cost, workload, business impact, capacity planning, staffing skills and tools.

Table Of Contents
  • Key Challenges

Introduction

Analysis

  • If Cost Is the Driving Factor, Ascertain Whether You Have Optimized Your Mainframe Environment
  • Determine the Time It Will Take to Migrate Completely Off the Mainframe
  • Recognize That Cost Savings Are Not Necessarily Commensurate With the Percentage of MIPS Offloaded
  • Ease of Migration Is More a Function of the Nature of the Workload and the Number of Applications Than It Is the Number of MIPS
  • Ascertain the Impact on Your Business Continuity/Disaster Recovery Plans
  • Plan for Historical Preservation of Data, Optionally Including Access to Content in the Absence of Original Applications
  • Premigration Capacity Planning Is Critical
  • Assess Your Staffing Skills
  • Know That Tools to Manage and Virtualize on Other Platforms May Not Be as Sophisticated as Those on the Mainframe
  • Identify Who Has to Pay All the Infrastructure Bills
  • Perform Your Financial Analysis Without an Emotional Bias
  • Determine What Modernization Means to the Business

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