Improve Data Performance 

For years, we have loved Diskeeper and the way it works in the background to keep your hard drives defragmented. Defragmentation programs have been available for decades, but Diskeeper is among the true innovators.With the release of 2011, the tool has gotten even better. 

Basic Bits 

Drive defragmenters aggregate the data—which drives normally break into chunks and store wherever necessary— into contiguous blocks. This speeds access time (and therefore system performance), and can literally prevent a drive from crashing.  Diskeeper takes a multipronged approach to defragmentation that eases its system impact and helps keep your drives humming along smoothly. For one thing, its IntelliWrite technology prevents fragmentation before it happens. Its new Efficient Mode feature improves the defragmenting process by identifying problem fragmentation. The Instant Defrag feature tidies up any leftover fragments it cannot process during the initial file save. Both of these happen on the fly, in the background,and with little to no impact on system resources.  

The full review is located here.