<I will agree for POWER7 and earlier systems. I will disagree
for the POWER8 S814 and S824 models with high function
backplane. The on-board disk IOAs are better than the feature
ESA3 and 5913 adapters used by many on POWER7 for write
intensive and write response time sensitive workloads.>
When you state high function backplane, you're referring to
<Third is high function backplace with 7.6GB of write cache
and maximum drive bays.> correct?
So, if using CEC's DASD, you should almost always consider
option 3 from a performance point of view.
Also, are you stating the option 3 is equal or outperforms a
5913. So a fully loaded CEC with 8 775gb SSD (5.4 tb useable
with Raid 5) with option 3, high function backplane would be
about the best performance for an i5/0S LPAR.
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