![]() ![]() ![]() Cant remember if that something was the OS or Exec soft's Diskeeper that did I see your point about the clusters being marked as free. I remember back from the NT4 days that the something would purposely leave a bit of "slack" around used clusters incase files grow in order to alleviate future fragmentation. There is a very small header on each cluster - on odd numbered clusters it's at the beginning of the cluster and on even numbered clusters it's at the end of the cluster. By starting with an odd-numbered cluster the drive heads can read directly into the next even-numbered cluster without skipping any data. The reason NTFS uses odd numbered blocks has to do with how logical clusters are laid out. The offset into the bitmap gives NTFS the logical cluster number. To speed this up NTFS keeps a bitmap structure where each bit represents a single cluster. If the file is less than 1020 bytes it will be stored entirely in the MFT. If there are not odd-numberd logical clusters free then the first free cluster will be used. If not then NTFS will find the first free odd-numberd logical cluster on the disk and allocates from there. If the creation information contains file size then NTFS will attempt to allocate the entire file from a single contiguous logical block of clusters. Retrieved 30 December 2010.It depends on how the next file is "created". "REVIEW: Diskeeper 2010 Keeps Disk Defrags to a Minimum". Archived from the original on 24 June 2011. ^ "2010 Windows IT Pro Editors' Best and Community Choice Awards".^ "2009 Windows IT Pro Editors' Best and Community Choice Awards".^ "Fragmentation prevention technology".^ "InvisiTasking Technology: Computer Optimization & More".^ "Inside Diskeeper 2010 with IntelliWrite" (PDF).The Disk Defragmenter tool is based on the full retail version of Diskeeper by Executive Software International, Inc. ^ "Disk Defragmenter Limitations in Windows 2000, Windows XP, and Windows Server 2003 (Revision 5.3)".^ "Executive Software/Diskeeper Corp on OpenVMS".^ "Diskeeper Server: Technical Specifications & System Requirements".^ "Diskeeper Professional: Tech Specs & Resource Requirements".Diskeeper 2010 however, only managed to achieve Editor's Best Bronze Award for best system utility of 2010. After version 10, Diskeeper versions follow the year based naming convention, that is, 2007, 2008 and so on.ĭiskeeper 2009 won Editor's Best Gold Award and Community's Choice Bronze Award for best system utility of 2009 from Windows IT Pro. Version 10 was the last version available for Windows 9x. Diskeeper Administrator is also available to manage Diskeeper options as well as perform advanced installations. There are six versions available: Home, Professional, Pro Premier, HomeServer, Server, and EnterpriseServer. The I-FAAST feature is available in Professional, Pro Premier and Server editions. According to Diskeeper, this results in faster file access and also helps prevent future fragmentation of those files. I-FAAST determines the frequency of file usage and the most frequently used files are then moved to the best portion of the disc. Īnother feature in Diskeeper is I-FAAST, or Intelligent File Access Acceleration Sequencing Technology. Diskeeper can also defragment files on-the-fly, using only idle system resources as needed. In addition to resolving file system fragmentation, Diskeeper also prevents fragmentation before it happens by optimizing the process of data being written to disk. Diskeeper 2008 Professional introduced a Volume Shadow Copy Service (VSS) compatibility mode, which defragments on a unit of 16 KB, so that VSS file history won't explode, invalidating cached old versions of the files. Diskeeper 9.0 (for Windows 2000 and XP) Server Edition introduced Terabyte Volume Engine (TVE), which provides optimal defragmentation performance on volumes of 1 TB and larger. The defragmentation program which is included with Windows 2000, Windows XP and Windows Server 2003 is based on a basic version of Diskeeper. Originally, Diskeeper was developed for the VAX series of minicomputers and later for Microsoft Windows. All of Diskeeper's features and functionality are now included in Condusiv's data performance software DymaxIO. The final version of Diskeeper was released in March 2020. It was developed by Executive Software International, Inc., which later changed its name to Diskeeper Corporation, and is now called Condusiv Technologies. Diskeeper is a discontinued defragmentation app, designed for Microsoft Windows. ![]()
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