ESDI controller recommendations

[Jon Zeeff]

>There are a lot of people who won't consider DEC RISC machines, or Sun
>Sparcstations for the simple reason that they are single-sourced.  If you 
>look at those systems you'll also find rather disappointing I/O performance 
>compared to a DPT + ESDI disk + 33Mhz 386 machine.  

I find the DEC RISC machines disk i/o terrible but the new Sun 
machines are about the same as a '386 ESDI system with Interactive 
Unix.  Sun also uses any available memory for disk caching (which works
well).  A '386 scsi system is faster.

Some rough results for raw throughput:

DEC 3100 	150
'386 ESDI	522
Sun Spark/1     550 
'386 SCSI	677



-- 
Branch Technology            |  zeeff at b-tech.ann-arbor.mi.us
                             |  Ann Arbor, MI