Large Block IO

I have a specialized storage device that can only complete very large IOs (>
1MB). I’m guessing a filter driver with a large cache is the way to translate
standard requests (4k min) into large ones. Am I better off with a File
System filter driver or a Device filter driver?

Sounds to me like you need to write a disk driver, not a filter.

Neal Christiansen

This posting is provided “AS IS” with no warranties, and confers no
rights.

-----Original Message-----
From: xxxxx@aol.com [mailto:xxxxx@aol.com]
Sent: Wednesday, April 03, 2002 07:35 AM
To: File Systems Developers
Subject: [ntfsd] Large Block IO

I have a specialized storage device that can only complete very large
IOs (>1MB). I’m guessing a filter driver with a large cache is the way
to translate standard requests (4k min) into large ones. Am I better off
with a File System filter driver or a Device filter driver? —
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You will have to write some caching of your own to do this. NT’s Cc and Mm will usually send you 64KB requests, and there is no ways of changing this.

Max

----- Original Message -----
From: xxxxx@aol.com
To: File Systems Developers
Sent: Wednesday, April 03, 2002 7:35 PM
Subject: [ntfsd] Large Block IO

I have a specialized storage device that can only complete very large IOs (>1MB). I’m guessing a filter driver with a large cache is the way to translate standard requests (4k min) into large ones. Am I better off with a File System filter driver or a Device filter driver? —
You are currently subscribed to ntfsd as: xxxxx@storagecraft.com
To unsubscribe send a blank email to %%email.unsub%%