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Behind the Curtains with Vista: 2

by Alpesh Nakar

Windows Vista introduces a new concept in adding memory to a system. Windows ReadyBoost lets users use a removable flash memory device, such as a USB thumb drive, to improve system performance without opening the box. Windows ReadyBoost can improve system performance because it can retrieve data kept on the flash memory more quickly than it can retrieve data kept on the hard disk, decreasing the time you need to wait for your PC to respond. Combined with SuperFetch technology, this can help drive impressive improvements in system responsiveness.

Windows ReadyBoostWindows ReadyBoost technology is reliable and provides protection of the data stored on your device. You can remove the memory device at any time without any loss of data or negative impact to the system; however, if you remove the device, your performance returns to the level you experienced without the device. Additionally, data on the removable memory device is encrypted to help prevent inappropriate access to data when the device is removed.

I should be clear that while flash drives do contain memory, Windows ReadyBoost isn’t really using that memory to increase the main system RAM in your computer.  Instead, ReadyBoost uses the flash drive to store information that is being used by the memory manager.  If you are running a lot of applications on a system that has limited memory, Windows ReadyBoost will use the flash drive to create a copy of virtual memory that is not quite as fast as RAM, but a whole lot faster than going to the hard disk.  What is very cool here is that there is nothing stored on this flash disk that isn’t also on the hard disk, so if you remove the flash drive, the memory manager sees the change and automatically goes to the hard disk.  While the performance gain from ReadyBoost is gone, you don’t lose any data and there is no interruption.  And because the Windows Readyboost cache on the flash drive is encrypted using AES-128, you don’t need to worry about exposing sensitive data if the flash drive is stolen or lost.  Also, the memory manager compresses the pages before writing them into the cache on the flash disk, which means you’ll get more mileage from each MB.

Grab yourself one of these USB sticks and enjoy the benefits of ReadyBoost.


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My name is Brick ONeil, and I’ve been with the 451 Press Network since March 2007. I’m the new blogger for Microsoft Talk. We’ll be discussing ‘About Microsoft’ itself. What’s happening, who’s coming/going, what new technologies they’re coming out with, updates and upgrades. I’ll try to bring you news each day that impacts your daily life and use of Microsoft products, or just interesting information I think you’ll enjoy

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