Path: utzoo!utgpu!news-server.csri.toronto.edu!rutgers!uwm.edu!rpi!uupsi!sunic!news.funet.fi!korppi!mk59200 From: mk59200@korppi.tut.fi (Kolkka Markku Olavi) Newsgroups: comp.sys.amiga Subject: Re: SCSI vs. ST506 vs. ESDI vs. Whatever else there is??? Keywords: SCSI ST506 MFM RLL ESDI HARD DISK DRIVE Message-ID: <1990Sep24.095523.12075@funet.fi> Date: 24 Sep 90 09:55:23 GMT References: <184@thor.UUCP> Sender: news@funet.fi (#News ) Reply-To: mk59200@korppi.tut.fi (Markku Kolkka) Organization: Tampere University of Technology, Finland Lines: 18 In article <184@thor.UUCP> scjones@thor.UUCP (Larry Jones) writes: >ESDI is the Enhanced Small Device Interface, another bus similar to SCSI >but optimized for disks only. Actually ESDI is an improved version of ST506/ST412 with the encoding/decoding circuitry moved to the drive and some other modifications. It's not at all similar to SCSI. >(SCSI allows up to 7 devices on the bus, the other interfaces support only two >disks) ST506 and ESDI allow 4 disks, but most IBM-PC controllers support only 2 disks. (Otherwise a very good summary. Thanks.) -- Markku Kolkka mk59200@tut.fi