O&O Defrag是一款专为windows开发的磁盘工具，可以适用于工作站、服务器和高级服务器等各种版本，支持几乎所有的文件系统，包含FAT16、FAT32、NTFS、NTFS5、FS(加密文件系统) 等，是一款不可多得的好工具。可设定时间自动重整硬盘，支持中文长文件名。

File size: 46 MB

Product features:

New defragmentation method SOLID: for the most resource and hardware-friendly optimization of your hards disks and SSDs

Fragment Filter to identify the most fragmented files on a drive

O&O DiskStat

O&O DiskCleaner

Time View to see which defragmentation activity results in which successful optimization

Easy-to-Use: Ideal for Beginners and Professionals

Even faster system and program starts

Defragmentation time reduced by up to 40%

Defragmentation of locked files

Lifetime Performance Statistics

Automatic deletion of free space for more privacy

Optimizing systems with Thin Provisioning

Supports Windows 10, Windows 8.1 and Windows 7

Server Edition requires Windows Server 2016, 2012 R2, 2012, 2008 R2, 2008