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Disk and tape devices z/OS DFSORT Application Programming Guide SC23-6878-00 |
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For optimal performance, use disk devices to which little other activity is directed, for work data sets. Specify high-speed devices such as IBM's TotalStorage DS8000 storage subsystems, and avoid specifying tape or virtual (VIO). Using tape devices for work data sets rather than disk causes significant
performance degradation for the following reasons:
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