Re: Fake SCSI devices

From: Florian Weimer (fw@deneb.cygnus.argh.org)
Date: Thu Mar 23 2000 - 04:13:24 EST


Helge Hafting <helgehaf@idb.hist.no> writes:

> Note that someone already did a "IP over scsi" where they could send
> datagrams from a host adapter in one machine to a host adapter in
> another.

In fact, I want to avoid a similar solution: MIDI over SCSI. There are
some MIDI samplers which can transmit samples over the SCSI bus using a
special, somewhat proprietary protocol. Unfortunately, with at least one
vendor, MIDI over SCSI transfers are much slower than direct disk access
(20 K/sec vs. 200 K/sec or more). My idea is to provide a virtual hard
disk on the SCSI bus which the sampler can access. I hope that with
a virtual disk, proper (or almost proper) synchronization is easier to
implement than with a real disk.

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