"Schuh, Richard" wrote: > Yeah, but 3090 memory was not ferrite core, was it? IIRC, it was much > cheaper and more reliable. I wasn't privy to the bean-counting > specifics, but the rumored cost of the LCS storage on our 360 class > machines was in the neighborhood or $2.5-3M per 2MB unit. And they were > real core - you could look through the glass panels and see the > individual planes of wires and doughnuts. The stuff was not reliable, so > we had 3 boxes in order to always have 1 available for the production > ACP system. There was usually 1 in use, 1 being repaired, and 1 just out > of repair that was on standby. The care and feeding of those animals was > a career.
small spill-over from bit.listserv.ibm-main mentioning extended store, 3090 memory, 360 memory, 360 LCS and a couple other memory related topics http://www.garlic.com/~lynn/2006r.html#34 REAL memory column in SDSF http://www.garlic.com/~lynn/2006r.html#35 REAL memory column in SDSF http://www.garlic.com/~lynn/2006r.html#36 REAL memory column in SDSF http://www.garlic.com/~lynn/2006r.html#37 REAL memory column in SDSF http://www.garlic.com/~lynn/2006r.html#39 REAL memory column in SDSF http://www.garlic.com/~lynn/2006r.html#40 REAL memory column in SDSF http://www.garlic.com/~lynn/2006r.html#42 REAL memory column in SDSF http://www.garlic.com/~lynn/2006r.html#43 REAL memory column in SDSF
