Messages in this thread |  | | | Subject | Re: IDE and hot-swap disk caddies | | Date | Wed, 27 Mar 2002 22:51:52 +0000 (GMT) | | From | Alan Cox <> |
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> I have seen USB mass storage devices with ide connector on them, so it > is certainly possible to translate between scsi and ide. If it makes > sense from performance standpoint.... I don't know.
SCSI->IDE command translation isnt too hard providing you stick to simple stuff and blindly ignore things like ATAPI, SMART, and all the control stuff. The moment you get into the complex stuff its deeply unfunny.
On the read/write side SCSI->IDE command mapping generally works out. Its not pretty on the corner cases (like error mapping) and it does mean you have a lot of excess overhead and potentially serious problems with performance because IDE (well ATA technically) is very very sensitive to round trip time - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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