A technical advisory letter titled "Windows Defragmenter: Not Good Enough," written by Gary Quan and published by Condusiv Technologies, discusses the advantages of Condusiv products like Diskeeper and the V-locity accelerator over the defragmentation solutions that come bundled with Windows products. According to the paper, Microsoft originally designed its Windows Built-in Disk Defragmenter to attend to low-activity systems, and though the Windows defragmenter has since evolved, it has not evolved fast enough to beat its competitors.