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Jon,described.
There is a whale of difference between "supported" and "works".
Supported means IBM has tested it completely and it will perform as
back, rightly so.
The huge disk units will make IBM i very slow due to the way IBM i
does I/O to the DASD units, hence it won't perform within
specifications and therefore is not supported. You'd hate it if they
allowed you to use it except in very narrow circumstances such as
those that Larry pointed out earlier.
Remember that if you experiment and find out something works, (or
seems to) then when you call IBM for help on your hardware or
software warranty the problem may in fact be generated by that
unsupported equipment that may have been rejected by IBM for a reason.
IBM will tell you when you get to a supported configuration to call them
for a reason.
IBM i keeps its device drivers in LIC. When it recognizes a device it
loads the drivers needed for that device on to the interface card (SAS
or Fibre) and then the card is able to drive the device. The device
drivers for the item you hang on the system may not be there or if the
one it chooses is not really compatible then problems of unknown types
occur. Remember the "unexpected results may occur" phrase? It's there
In the end if you pay the money to get one of these systems at least
wait until its off warranty to try hanging unsupported stuff on it,
and NEVER,EVER do it to a production system.
simply did not work or did
When Larry and I built the first of the "Franken Series" boxes at
COMMON in Indianapolis we had specific goals in mind and we achieved
them. Those boxes were never in a production role. So when I say
what might work is different than what's supported we come from a
point of experimentation and knowledge. BTW: we did find some stuff that
work but would have blown up the system, so there are limits.
--
Jim Oberholtzer
Agile Technology Architects
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