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Which benefit does dual-domain offer over dual-path SAS?
A. Dual-path SAS implementations make it possible to tolerate host bus adapter (HBA) failure.
B. Dual-domain SAS implementations provide some lower cost solutions that cover cable failure.
C. Dual-path SAS implementations provide full redundancy of a SAS solution.
D. Dual-domain SAS implementations make it possible to tolerate host bus adapter (HBA) failure.
Correct Answer: D
Explanation/Reference:
Dual-domain SAS implementations make it possible to tolerate host bus adapter (HBA) failure, external cable failure, expander failure, failure in a spanned disk (JBOD) environment, and failure in Redundant Array of Independent Disks (RAID) environments.
References: http://h20564.www2.hpe.com/hpsc/doc/public/display?docId=c01451157 (Redundancy in enterprise storage networks using dual-domain SAS configurations)
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