Diskeeper is an automatic disk defragmenter that features scheduling and a high level of configuration ability, and can defragment even critical system files. Fragmentation occurs during normal Windows operation, as files are broken up in pieces and saved on different parts of the hard disk. This increases the amount of time it takes to access single files, and bogs down system performance.Download:
Diskeeper 9 Professional Edition v9.0.524

Download:
Diskeeper Server Enterprise Edition v9.0.524

Download:
Diskeeper Server Standard Edition v9.0.524