>>You cannot do that. 16 GB is minimum as increments are in 16 GB too.
>Not on z800.

Different class of system, isn't it?  That's why there's a z890, after 
all, to provide smaller increments (of both processor and memory), either 
alone or in combination with System z9-109.

I think 16 GB is a "lot," but then I look at the System z9-109 and see 
that there are still 30+ different (physical) memory configurations 
available on a single frame.  Said another way, the system has smooth 
memory granularity in ~3.3% increments.  And one 16 GB increment is almost 
exactly the same price as one Linux engine or zAAP.  (Both are cheap in 
comparison to fully burdened labor.)

There's also the z890 (and z800) and, if its 32 GB system maximum is 
available in 1 GB increments, then that's also ~3.3% granularity (31 
steps).

And before anybody leaps in and says "who could ever use 512 GB?" (the z9 
single frame maximum), here's the answer: Linux and Java.  They love 
memory.  (We just had an IBM-MAIN discussion about 64-bit Java heaps 
because a 31-bit addressible heap wasn't "enough.")  You can do a lot in 
32 GB, but you can do even more in 512 GB.

I think the Mark I was maxed out at ~1600 digits of vacuum tube storage. 
(Not sure of the bit width, so let's call it digits.)  Now an iPod nano 
has 4 GB of electronic memory (albeit nothing at all like mainframe 
memory) and retails for a couple hundred bucks.  Mark I storage was priced 
the same as a good sized army (at draft-level wages), and now the average 
U.S. worker can earn enough for a whole iPod in little more than a day.

Progress! :-)

- - - - -
Timothy F. Sipples
Consulting Enterprise Software Architect
IBM Americas zSeries/z9 Software
Phone: +1 312 529 1612
E-Mail: [EMAIL PROTECTED]

----------------------------------------------------------------------
For IBM-MAIN subscribe / signoff / archive access instructions,
send email to [EMAIL PROTECTED] with the message: GET IBM-MAIN INFO
Search the archives at http://bama.ua.edu/archives/ibm-main.html

Reply via email to