Many VSE sites maintain a “steady as we go” attitude, focusing on incrementally growing application requirements. Evolving application needs can often be satisfied by upgrading within VSE, partnering Linux capabilities with VSE, or installing a small VSE-connected Unix/HP/NT system. These choices can be online faster and cost much less than undertaking z/OS migration, which typically requires 15-18 months and costs a million dollars.
Why, Whether, When to Migrate from VSE to z/OS—Cost/Benefit Tradeoffs
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