SCSI Pass through using VB6

Does anyone know of resources either in books or on the web, or does anyone have experience of using SCSI Pass Through / Direct using (ideally VB6).
I am interested in how to set up the IOCTL_SCSI_PASS_THROUGH / DIRECT without using .net I have tried some sample .net code and it is clunky and very slow.
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Kyle SantosSoftware Test Analyst I at Dassault SystemesCommented:

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Kyle Santos
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mikemAuthor Commented:
Hi Kyle

Still looking for an answer to this.

Thank you.

mikemAuthor Commented:
Thank you.
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I've written SCSI passthrough code in just about every O/S you can imagine.   For the MSFT environment, you want to use visual C.  No need to do any .NET.  It can be lean and mean code of a few KB.  

No WAY is the code slow, it is ALWAYS going to be device.  Consider it takes nanoseconds to tell a device to execute the code, but takes milliseconds to execute most SCSI commands.

The various online MSFT manuals and visual studio has examples of  IOCTL_SCSI_PASS_THROUGH.  

If it is slow, you could be doing a lot of things wrong, post your code.

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Kyle SantosSoftware Test Analyst I at Dassault SystemesCommented:

An expert has replied.  Is there anything else I may assist you with?

mikemAuthor Commented:
Thanks David, I had written code that used the winaspi interface on Xp that was very fast, I did write some .net code using stuff I found on the web, but it is dreadfully slow, at best half as slow when directly reading sas hard drives on xp! In the meantime, I have found a scsi dll that is distributed as a separate package from the company that writes visual scsi explorer, this will hopefully resolve the problem and save time. However I will give you the answer, because at least you replied. Thank you.
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