@Mark Vaughn You can see the on-premises disk IOPS, throughput and network In/out details from:
• Assessment> Azure Readiness blade> Click the machine name > Click on the chevrons in storage and network sections:
• Assessment > Azure Readiness blade > Columns> Enable the performance data columns:
• Assessment> Export assessment
You will be able to see all these counters in the exported assessment file as well.
HTH
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