We were recently in a similar exercise - but on z890. The particular box we
were putting the last LPAR on had 1 couple facility, 1 z/OS lpar with 2 cp,
and 1 free processor. Had to add a new lpar with DB2, WebSphere, etc on
z/OS for a grandiose scheme from upper levels. Original scheme from above
was " for the new lpar, we will take a portion of the 2 cp currently in
use, use the free cp as a zAAP for WebSphere relief - oh, and we may want
it to double as a zIIP for DB2 relief and maybe allocate a portion of it to
a z/Linux lpar later !". My statement of "I don't believe that will work"
was not well received and the scheme moved forward until contact was made
with the IBM SE.
After his private rant to me - that I fully agreed with, in private of
course, - the SE politely explained in simple terms to "above" that the
choice of which microcode to turn on made the processor exclusively one
type. The choices were : 1) general cp with the attendant increase in
software license cost, 2) zAAP to assist the java workload ( and CA
attempting to figure how to bill extra anyway ), 3) zIIP to assist the DB2
workload ( again, CA trying to figure how to bill for that ), 4) IFL in a
separate LPAR for z/Linux or VM+z/Linux with z/OS n'er to be seen, or 4)
another couple facility.
The selection is definitely and "either or" proposition.
Decision was for a zAAP since WebSphere, Portal, and Process Server ( wth
? ) are required to do the most work for this scheme.
Maybe a z/9 will be in our near future....maybe not.
"McKown, John"
<[EMAIL PROTECTED]
thmarkets.com> To
Sent by: Linux on [email protected]
390 Port cc
<[EMAIL PROTECTED]
IST.EDU> Subject
OK - a really stupid question.
05/22/2007 09:21
AM
Please respond to
Linux on 390 Port
<[EMAIL PROTECTED]
IST.EDU>
Yes, I know this will be a stupid question. But I will ask anyway
because I have no fear (or was that no sense?). A zAAP engine is used by
z/OS to run Java code. The only reason for such an engine was because of
the CPU demands of Java and the fact that adding the required CPU power
using a general purpose engine would drive up the other software costs.
That is, a zAAP engine is a marketing ploy to "sell" Java (an maybe some
other Java-dependant software such as WAS). It is not a solution to a
technical problem with Java on z/OS. Therefore, there is no need/reason
for Linux on System z to ever support a zAAP (or zIIP or other specialty
engine which is "marketing" oriented). True?
OK, why the stupid question? I am hoping (perhaps in vain) that
eventually we may get a zAAP to do Java work on z/OS and to get back my
IFL (lost during our z9BC upgrade due to "lack of interest") for
possible Linux on System z work. Our current management incarnation is
very open towards Linux. But they still act like Linux only runs on
Intel. Well, it beats the previous "Windows is the solution to every
problem!" attitude of the previous management group. Anyway, I am fairly
sure that somebody in management is going to ask something like: "Why
can't I run z/OS Java on an IFL?" or "Why can't I run z/Linux on a
zAAP?". I.e. they'll want to get a single speciality CP to do both
z/Linux and z/OS Java. This in order to reduce hardware costs. I know
they are not expensive, compared to a general CP, but we are very cost
conscious, as is reasonable.
--
John McKown
Senior Systems Programmer
HealthMarkets
Keeping the Promise of Affordable Coverage
Administrative Services Group
Information Technology
The information contained in this e-mail message may be privileged
and/or confidential. It is for intended addressee(s) only. If you are
not the intended recipient, you are hereby notified that any disclosure,
reproduction, distribution or other use of this communication is
strictly prohibited and could, in certain circumstances, be a criminal
offense. If you have received this e-mail in error, please notify the
sender by reply and delete this message without copying or disclosing
it.
----------------------------------------------------------------------
For LINUX-390 subscribe / signoff / archive access instructions,
send email to [EMAIL PROTECTED] with the message: INFO LINUX-390 or
visit
http://www.marist.edu/htbin/wlvindex?LINUX-390
----------------------------------------------------------------------
For LINUX-390 subscribe / signoff / archive access instructions,
send email to [EMAIL PROTECTED] with the message: INFO LINUX-390 or visit
http://www.marist.edu/htbin/wlvindex?LINUX-390
