title: FactorySizeInGbUnits and MaxAllowedFactorySizeInGbUnits in Azure Data Factory Metrics
body: <p>Recently configured Data factory for the first time and wanted to understand the metrics being collected.
  The two metrics that I am not able to understand are:</p>
  <ul>
  <li><strong>FactorySizeInGbUnits</strong> - Is this the Gigabytes of data that Data Factory is transferring this very second or has transferred in totality so far?</li>
  <li><strong>MaxAllowedFactorySizeInGbUnits</strong> - Is this a value we can set? For example, Maximum 100 Gigabytes of data can be transferred in a second?</li>
  </ul>
  <p>I did look at the <a href="https://docs.microsoft.com/en-us/azure/azure-monitor/platform/metrics-supported#microsoftdatafactoryfactories" rel="nofollow noreferrer">Microsoft documentation</a> but the description isn't very clear (as shown below)
  <a href="https://i.stack.imgur.com/vupDC.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/vupDC.png" alt="enter image description here" /></a></p>
  <p>I have <strong>configured the data factory in my lab, created pipeline, and performed a copy activity</strong> and this is how the log looks:
  <a href="https://i.stack.imgur.com/970P1.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/970P1.png" alt="enter image description here" /></a></p>
  <p>These may be trivial metrics for experienced Data factory folks but is really confusing for a newbie like me. Please assist as I could not find any documentation that could explain the two in full depth with an example.</p>
  <p>Appreciate your help.</p>
  <p>Thanks!!</p>