Re: DCD Filter Driver

Read the paper, it calls for NVRAM for the cache, you then bring up the
question of USB drives (since you mention USBSTOR) if you are looking at
those they are NVRAM so you are not going to win. There was a long
discussion on this on NTDEV (http://www.osronline.com) a few days ago, look
for the subject "Filter Driver to speed up access to files?"


--
Don Burn (MVP, Windows DKD)
Windows Filesystem and Driver Consulting
Website: http://www.windrvr.com
Blog: http://msmvps.com/blogs/WinDrvr
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"Sushma" <> wrote in message
news:98afcbd7-c43c-404c-82b1-...
> Hi All,
>
> I thought of playing with filter drivers as this was new to me.
> Initially I thought for writing a filter driver for audio class to
> record audio coming out of PC. But due to some reasons I had to scrap
> the product.
>
> My boss suggested for disk cache filter driver. The filter driver
> shall improve performance for small write requests by converting them
> to larger ones before writing data to disk.
>
> I found an interesting article for the same.
> http://www.ele.uri.edu/Research/hpcl/DCD/DCD_Driver.pdf
>
> However, the article was for Windows NT Os. I would like to accomplish
> the same for Windows Vista/Win 7.
>
> I have two questions here.
>
> 1) With present mass storage architecture, can the problem be resolved
> with a filter driver? I would like to know the feasibility.
> 2) If this is feasible, do i need a disk lower filter or USBSTOR lower
> filter to capture write requests and convert them to larger ones?
>
> I need experts advice.
>
> Any help is much appreciated.
>
> Thanks and Regards,
> Sushma
>
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