I agree with Rainer. The forums are not the correct place for this kind of issue/question.
Please open a support case asap.
This sounds like a hardware issue and we need to look at logs to determine why the SP is shutting down.
My guess (from experience) would be that one or more internal cooling fans might be faulted. When this happens, a timer is tripped to prevent the SP from over heating, and the SP is shut down.
Maybe try reseating all the fan on the SP (internal - please follow the docs as reseating incorrectly may lead to more problems).
In any case, nothing should be done here until a support SR is opened.
Rainer_EMC
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Posted January 11th, 2018 02:00
check if its seated correctly
please open a case with support
you can do do via phone or web on support.emc.com
the community forum is not a replacement for a service request