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Diskeeper 9.0 Professional

Hard disk drive fragmentation is a major cause of performance bottlenecks. It can also cause crashes, slowdowns, freeze-ups and even total system failures. Although Windows comes with its own defrag utility (which was also developed by Executive Software), it requires a manual process to keep track of fragmentation levels and takes forever to run on large hard disks.
1 of 2 Christian Harris/ZDNET
2 of 2 Christian Harris/ZDNET

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