Barton wrote:
"Jim, might I suggest you apply to the next
redbook???"
Love to, but the Boss won't let me ('nuff said). He
wants me to go back and so zOS. My forays into P&T for
Linux are during slack times and weekends and when I
can get on the hardware. I got on the TREX by
promising to do a beta for POK.
"As for your LPAR, that probably explains a lot. In
the real world,
I can't figure out why a customer who has to pay for
it would
dedicate an LPAR to Linux that is at best today 1.3Ghz
(z990),
at 1-2 orders of magnitude more in price than a say
3Ghz Intel
chip (With memory that is a lot less $$) and oh by the
way, I recently
lost a proof of concept because until we get complete
FCP,
the I/O on the "ix" platform was faster."
(but had to be distributed!)
Question: What many transactions can I do in a given
time for what cost?
You're still thinking the PC model - with among other
things a lot of CPU idle, a lot of memory idle, and
database dispersed over a lot of disk drives that can
only be reached via the net.
On the other end of the scale, think of this:
- 16 x 1.3 GHZ cp's running fairly busy
- several terabytes of data, any byte available within
a few ms.
- 64GB shared memory so any processor and work on any
workload, thus balancing resources.
- abilitity run all kinds of workloads simultaneouly
(interactive, transaction server, "batch") in a single
image.
- single OS image so that administrative support is
cheaper (security, data management, etc).
TCO used to be called "economy of scale".
=====
Jim Sibley
Implementor of Linux on zSeries in the beautiful Silicon Valley
"Computer are useless.They can only give answers." Pablo Picasso
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