I had an opportunity to explore and evagelize diskpeer 2009 and I must say that is't a must have tool on your system to keep the health of your system to optimum. I am very grateful to Diskeeper Corp, since I have had the privilege to explore Diskeeper for the past 2 versions and now 2009. Here are a quick few things that I thought I should highlight about the product:

 Automatic Deframentation: This feature is like a good old genie which takes care of ensuring that your system is always performing optimally. This is a service that keeps running in the background and continuously optimizng the system and thus preventing framentation. The best part is that the service run on a lower priority thread, and is intelligent to ensure that the system performance is not hampered while other applications are open or are being executed.

IFAAST: Here's what diskeeper has to say about their innovative Intelligent File Access Acceleration Sequencing Technology (I-FAAST):

"Intelligent File Access Acceleration Sequencing Technology (I-FAAST) improves file access and creation on NTFS volumes by up to 80% (average 10%-20%) above and beyond the improvement provided by defragmentation alone. This is the first industry implementation of “Disk Performance Calibration”, the modern evolution of the outdated and inconclusive disk optimization strategies of the past. Automatic Defragmentation keeps your volumes running as if they were new.

When I-FAAST Defragmentation is enabled on a volume, Diskeeper runs specially-engineered benchmarks on the selected NTFS volumes to learn their individual performance characteristics. (Not all disks have the same characteristics.) Diskeeper then transparently monitors these volumes for file access frequency on an ongoing basis in to determine which files are requested most often. Special analysis techniques prevent Diskeeper from being "fooled" by files that have been recently accessed. Using newly-developed technology, Diskeeper sequences the files to take best advantage of both the logical characteristics and physical characteristics of the volume. The sequencing process is integrated with Automatic Defragmentation, so it’s virtually transparent to you." This essentially means two things to me:

1. Sequencing frequently accessed file contiguously will not always mean better performance.

2. Diskpeer I-FASST is intelligent enough to figure out what improves performance based on patterns in disk access and disk charecteristics and thus optimizes performance intelligently

Frag shield: This prevents disk fragmentation in the first place and thus once your disk is fully de-fragemented, thereafter, the time for keeping it de-fraged is much lesser than doing it when you realize that your disk isn't performing the way it should be. This saves you on time and ensures that your disk is performing like new all the time.

Other than that it also offer others excellent features like Boot-Time Defrag that does 3 distinct things: Directory De-Frag and consilidation, Page File De-Frag and Master File Table De-Frag.

All in all, I feel this is a must have too and I have particularly noticed an increase in performance soon after I got it up an running. So far I haven't faced in issues with this product and I would definitely recommend it.

To know more browse to www.diskeeper.com

Cheers!!!