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  3. August 2014

RE: New Power8 Disk Perf Issues

"Jim Oberholtzer" <midrangel@xxxxxxxxxxxxxxxxx> wrote on Mon, 25
Aug 2014 18:24:28 GMT:

We know that P8 will use internal storage, except, as I
understand it, if you have the back plane split so you can run
dual VIO Servers.

No, the split backplane is supported by IBM i so you do not have
to run dual VIO servers. This means you could have VIOS for
NPIV using 1/2 the disk bays. Then sitting right beside an IBM
i LPAR using the other 1/2 of the disk bays.

Then you must use external storage.

Even if you do dual VIOS, there are card slots for disk IOAs
which can be dedicated to an IBM i LPAR. I'm not sure why you
say with split backplane storage must be external SAN. Unless
you really meant storage will be external to the CEC.

So
it's about half right. Even then I think you might get away
with internal storage but it would be A) slow and B) very
limiting so certainly not recommended.





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