lfk@E40-008-6.mit.edu (Lee F Kolakowski) (06/13/90)
I have a WD1003-WA2 MFM Disk controller and a Priam ID45-H hard disk and I need some more space. I was wondering about RLL controllers esp. 1) Are they less reliable than MFM? 2) Does this drive handle RLL well? 3) What kind of space improvements can I expect? 4) What reccommendations are there for a controller board? I also need to get some more memory for a data analysis program I have. I am planning of switching to unix in the next 1-2 yrs. (When I get Rich :-)) Can I buy a 16 bit AT board and put some of the ~75 256-10 chips I have now, in the board for a 2 MB more memory. Then later yank out those chips and put in 1MB simms? Finally, when I get all this new found memory space as extended memory is there some example code some kind soul could share (in C pref.) that could show me how to allocate large (512Kb) arrays for data? Thanks for all this in advance. I apologize for my seeming ignorance about hardware, but you know how it goes... -- Frank Kolakowski ====================================================================== |lfk@hx.lcs.mit.edu || Lee F. Kolakowski | |kolakowski@tropicana.mit.edu || M.I.T. | |lfk@mbio.med.upenn.edu || Dept of Chemistry | |AT&T: 1-617-253-1866 || Room 18-506 | |#include <litigate.h> || 77 Massachusetts Ave.| | || Cambridge, MA 02139 | |--------------------------------------------------------------------| | One-Liner Here! | ======================================================================
det@hawkmoon.MN.ORG (Derek E. Terveer) (06/15/90)
In article <1990Jun13.033550.19470@athena.mit.edu> lfk@E40-008-6.mit.edu (Lee F Kolakowski) writes: > > I have a WD1003-WA2 MFM Disk controller and a Priam ID45-H hard disk and > I need some more space. I was wondering about RLL controllers esp. > 1) Are they less reliable than MFM? If you get one that is compatible with your computer they aren't any less reliable than mfm -- in fact, they may be more so. > 2) Does this drive handle RLL well? don't know -- it probably will > 3) What kind of space improvements can I expect? about 26/17 times as much space as you have now -- that is, a %53 improvement sometimes you can get a 31/17 = %82 improvement with some drives and some controllers > 4) What reccommendations are there for a controller board? I would say either a wd1006v board or an adaptec 2372C (<--i think) -- Derek Terveer det@hawkmoon.MN.ORG