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The UPS has a communications cable coming out of it which terminates in
a DB9 male. Pins 5-9 are populated.
The server has an adapter cable IBM p/n 46K5108. One end is an RJ45 and
that end is plugged into port S2. The other end is a DB9 female.
It would seem like a no-brainer to plug the DB9 male from the UPS into
the DB9 female coming from the Power 7, but I'm wary of that because the
Power 7 Systems Hardware information guide
http://pic.dhe.ibm.com/infocenter/powersys/v3r1m5/index.jsp?topic=/p7had/p7hadups.htm
doesn't mention an RJ45 cable with a DB9 female.
It DOES mention a f/c 3930 adapter from RJ45 to DB9 male and it also
mentions a f/c 1827 adapter cable which is a DB9 female to DB9 female.
It seems to me that the f/c 1827 is necessary to tell the service
processor a UPS is attached because it ties pins 2 and 7 together on the
server side.
My system order shows that I ordered an 1827 but of course I can't
locate it from 9 months ago. I can make one up easily enough, so that's
not a show stopper.
Do I trust the manual or is there a newer reference I should be looking
at? I'm not plugging anything into the back of the server until I am
convinced that it's OK to do so.
--buck
midrange.com
