Chapter 9.4.9. Summary of Metro Mirror and Global Mirror rules
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Chapter 9. Copy services 167 Time must be less than 1 ms for the primary cluster. A number in excess of this might indicate that an I/ O Group is reaching its I/ O throughput limit, which can limit performance. CPU Utilization Percentage CPU Utilization must be below 50%. Sum of Backend Write Response Time and Write Queue Time for Global Mirror MDisks at the remote cluster. Time needs to be less than 100 ms. A longer response time can indicate that the storage controller is overloaded. If the response time for a specific storage controller is outside of its specified operating range, this must be investigated for the same reason. Sum of Backend Write Response Time and Write ...
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