Which of these factors indicates a high likelihood that the performance of a virtual machine disk is being constrained by disk I/O?

Which of these factors indicates a high likelihood that the performance of a virtual machine disk is being constrained by disk I/O? 







A. A large number of commands issued
B. A high device latency value
C. A high disk used value
D. A large number of kilobytes read and written





Answer: B


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