DFSMS: From Storage Tears to Storage Tiers

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This IBM® RedpaperTM publication describes how class transitions differ from the classic migration processes and how they can influence application performance levels.
Performance is focused on the following goals:

  • Reduce the number of I/Os required to manage the storage
  • Optimize data locations to the appropriate device type during its lifecycle

This paper applies to the IBM z/OS® V2.2 level.


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