1

There is a big orange knob on the storage processors, for example, see the following picture (which show storages equipped with two storage processors, therefore we talk about these, in total 4 orange knobs):

EMC Unity DPEs from the back

I can't find any document describing their function. Please explain it!

5

It is simply the handle you can use to remove the storage processor board;
the hardware information guide calls it a "torque knob" https://www.emc.com/collateral/TechnicalDocument/docu69319.pdf

torque knob

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  • thanks, nice answer! – asdmin Sep 25 '19 at 11:53

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