For a D38800, a second redundant Hardware Management Console (HMC) is
recommended in which of the following scenarios?
A.
Adding more than two expansion bays
B.
Capture historic performance data using the native tools
C.
Implement an environment that uses TKLM encryption management
D.
Emergency power off the DS88FJO frame after main power input failure
Redundant HMC is recommended for better availability when using encription.
So answer seems to be C
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Option D: Emergency Power Control in case primary HMC Down. This is the most important reason for secondary HMC. Page 102: http://www.redbooks.ibm.com/redbooks/pdfs/sg248886.pdf
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