גדי בן אבי wrote:
We currently have two z890's. Each z890 has a production LPAR and a test LPAR.
The production LPAR's are connected to one SYSPLEX and the TEST LPAR's to
another.
We now have to add another production LPAR to one of the z890's and connect it to the production SYSPLEX.
The SYSPLEX is a base sysplex and the connections between the system are CTC's.
As I see it I have to use 4 more ESCON connections on the system where I add the LPAR, and two ESCON connections on the other system.
I take it you have no ESCON switch?
Is there any way to have an 'internal CTC' to connect the LPAR's that are on the same physical box?
No 'internal' CTCs exist unless you run under z/VM. You need one
jumpered CNC/CTC for the wraparound function on any one machine. (That's
two CHPIDs.) Each CHPID pair has 256 addresses you can play with. If you
split up into groups of four, that gives you room for 64 LPAR
"connections". However, since you can run Communication Server (VTAM and
TCPIP) and GRS traffic over XCF, you probably won't realistically need
more than two addresses per LPAR "connection". For redundancy, a second
CTC/CNC pair is a good idea.
Regardless of whether on the same system or between systems, you need a
good naming convention to keep things straight. IMHO, the following post
from Skip Robinson is a "must read": Once I changed my naming convention
to match what he suggested, adding a new LPAR became easy.
http://bama.ua.edu/cgi-bin/wa?A2=ind0207&L=ibm-main&P=R51155
--
Edward E Jaffe
Phoenix Software International, Inc
5200 W Century Blvd, Suite 800
Los Angeles, CA 90045
310-338-0400 x318
[EMAIL PROTECTED]
http://www.phoenixsoftware.com/
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