Eero Laurila ([log in to unmask]) wrote:
: Series 42 has the same CPU as a 48. Also, a micro3000 (don't mix with a
: series 37) has the same CPU power.  (btw, a s42 can be updated to s52
: (card swap) -- also was called 42XP at some point of time -- I think...).
: I've seen these machines running anything up to 50 users...  yes, you're
: pushing it hard. Max main memory used to be 4MB (not sure about how my
: memory works here...  Something tells me that this limit was upgraded
: a bit -- to 6MB? -- 8MB?? --maybe not...).
 
  Yup, I used an 8Mb Series 48 with 60 ports.  They use all 60 at one
time on occasion down where I was from, and yes, it comes to a crawl.  I
remember doing a
showcache and seeing more than 55% of the system memory taken up by disk
cache... ahhh those were (and still are, for some of us, incl. me) the
days...  Back before the school system had a 947, a 48 was used for the
county grades database and for computer classes.  You can imagine what it
was like, with 30 students compiling programs in Pascal V, and with 30
administrators printing/tabulating report cards for 100,000+ students all on
one 48, all at teh same time, MAJOR crawl.
 
: It's in an upright cabinet, should fit in a corner of 3ft x 3ft, probably
: about 4ft tall... power requirements I don't remember.  2kW would probably
: be enough for the CPU alone... surely someone has still the facts and can
: give the exact figure.
 
: Performance figures compared to a series 42:
:   Micro3000  42(=48)    42XP/52     s70          s947
:   1.0        1.0        1.4         3.7          5.2
 
: Best regards,
: Eero Laurila - HP CSY lab.
 
: Standard disclaimers apply...