Each CEX4S can support up to 16 domains. There are 16 sets of registers for storing master keys, so you can have 16 LPARs or virtual guests, each assigned their own set of registers. That is true for all the previous generations of crypto cards, but with the CEX5S that limit goes up ... probably to 85. (There is conflicting doc but it is more than 16 and the consensus seems to be 85.) Greg Boyd Mainframe Crypto www.mainframecrypto.com
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