For many years now we have kept a third party disk defragment tool in our tool kit, the product was UltraDefrag. We started with version 6 in the days when Microsoft's built-in defrag did a pretty poor job and using the free version of UltraDefrag delivered a noticeable performance boost. Begin a free tool we could install it temporarily on clients computers when being serviced and recommend the product to customers. Many of our customers reported that they installed UltraDefrag and made a donation to the author.