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Conference hydra::amiga_v1

Title:AMIGA NOTES
Notice:Join us in the *NEW* conference - HYDRA::AMIGA_V2
Moderator:HYDRA::MOORE
Created:Sat Apr 26 1986
Last Modified:Wed Feb 05 1992
Last Successful Update:Fri Jun 06 1997
Number of topics:5378
Total number of notes:38326

2228.0. "Digital Hard drive TYPE?" by SHARE::DOYLE () Sat Feb 11 1989 12:39

	Could anyone tell me if Digital hard drives need MFM or SCSI
    controlers. 
    	The ones I refer to are the 20, 40 meg "winchester" drives.
    						Thanx
    							Ed
    
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2228.1RD's were MFMDPDMAI::ANDERSONASun Feb 12 1989 10:199
    The RD series drives (RD50 thru RD54) were all ST506/ST412 MFM types.
    The new RZ type drives are SCSI drives but I do not have any info
    as to the type of interface (pinouts, cable size, number of conductors
    etc).  All I have seen were sales brochures.  They sound good but
    since it is a new product employee purchase will probably be a ways
    down the road.
    
    Alan
    
2228.2RZ productsWJG::GUINEAUMon Feb 13 1989 07:4410
The new RZ products are all ANSI SCSI-1 conforming devices. All use the
50 pin single ended cable (as opposed to differential or Apple's 25 pin SCSI)

RZ22	52mb , 3.5"
RZ23	104mb, 3.5"
RZ55	332mb, 5.25" full height. This drive will also do Synchronous transfer
				   (4mb/sec transfer rate)

John
2228.3A500 and RZxx compatability ?GIDDAY::ASHLEYMSat Nov 04 1989 06:544
    What would be needed to connect these drives (DEC RZxx) (note .2)
    to the amiga. Specifically an A500, is the RZxx bus as wide as the
    A500's SCSI port (being pretty knew to the Amiga I assume that the A500
    SCSI port is eight bits wide).
2228.48 for nowWJG::GUINEAUSat Nov 04 1989 10:587
>    A500's SCSI port (being pretty knew to the Amiga I assume that the A500
>    SCSI port is eight bits wide).

Yes,all DEC RZxx drives are 8 bit SCSI. RZ55,56,24 support synchronous
transfers as well.

John
2228.5Yes and noRLAV::LITTLETodd Little, NYA SWS, 323-4475Sun Nov 05 1989 21:149
    re: .3
    
    The A500 doesn't have a SCSI port.  You can purchase a SCSI host
    adapter such as the C-Ltd. SCSI adapter (this is what I have.)  It
    works perfectly well with just about any SCSI disk including the RZxx
    series of drives (once you enable them to spin up on power up as is
    described in another note.)
    
    -tl
2228.6A590 SCSI port ?AMIGA2::MCGHIEThank Heaven for small Murphys !Mon Nov 06 1989 04:463
    how about the SCSI port on the A590 ?
    
    Mike