Any ideas on fast disk access?

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1 total messages Started by MJP Wed, 23 Nov 1988 19:10

#2319

Author: MJP
Date: Wed, 23 Nov 1988 19:10

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First of all, thanks to all who helped on my long link query.  Current 
problem is sustaining high speed transfer of data to disk.  

The application is mapping (to 10 microns) large photographic plates. We
acquire up to 2 Gbytes of data per plate, and would like to stream this
data through a Systems Industries 9900 controller at >500 Kbytes/s. Our
original intention was to go via a QT0 and MicroVAX, but the limiting 
factor appears to be the Q-bus. DMA in, DMA out _plus_ VMS would appear
to make sustaining 500 Kbytes/s impossible.  Has anyone any suggestions as 
to how I can get sustained, high speed transfer from my transputers into an 
industry standard disk interface?  SI can handle most interfaces, so all 
and any suggestions are worthy of consideration.

Thanks,
Magnus Paterson,
Royal Observatory, Edinburgh.

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