SMDI – SCSI Musical Data Interchange:
SMDI (SCSI Musical Data Interchange Sample Management Protocol).
SMDI (pronounced "smid-dee")... ...more.
Quoted: "SCSI Musical Data Interchange; a data interchange standard originated in 1991 by Peavey Electronics. In the late 80's and early 90's, samplers were coming into fashion and a standardized way to exchange sample data was needed. As MIDI was quite old and extremely slow (MIDI choke was a problem even then), it was seen that a new bus was needed. As the SCSI (Small Computers System Interface) bus already existed and had proven to be interoperable, SMDI leveraged the existing technology. Nowadays SMDI can be used to convey all kinds of information besides pure sample data and is invaluable whenever samplers need to be integrated to the rest of the studio. As an added bonus, computer connectivity and use of existing SCSI hard drives became possible." ...more.
Quoted: "Many samplers still support the MIDI Sample Dump Standard (SDS) protocol for transferring digital audio via MIDI - A painfully slow process. (SDS dates from when samples were typically a few hundred kilobytes of memory, not several megabytes). SMDI (SCSI Musical Data Interchange) is a newer protocol for transferring samples over SCSI instead of MIDI, and runs about 50 times faster than SDS. Yes, SCSI is required for using SMDI." ...more.
Peavey Tech Notes - What is SMDI?
(To obtain a copy of the SMDI spec, contact Peavey Electronics Corporation at  483-5365.)
SCSI DOCS - Ultra 320 SCSI / SMDI Notes. OK, so we finally have enough SMDI info to warrant a page for gathering what we have in one location!
EMU.com: See: Remote
Control of the Emulator-IV Series via MIDI/SMDI, SMDI "Transmit
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