Chapter 11
Migration and Retiring Aging Systems
Why migrate? If it’s not broken, don’t fix it, right? Wrong. Sooner or later, we must migrate: User demand grows, application demand grows, the use of the data expands as it integrates with other applications, data itself grows, and hardware ages. It is in your best interest to organize the task of migration well and use it frequently. The cost of the hardware is a fraction of the costs of maintenance, people, backup, and so forth of the total cost of the system.
■ Replace aging server or storage hardware. Aging hardware becomes outgrown and can become increasingly unreliable; it must be replaced eventually.
■ Standard IT platforms are good. Hardware and applications age and become nonstandard. ...
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