The article discusses the Automatic Rebalancing feature in VMware vSAN, which is a software-defined storage solution. The author explains that vSAN automatically rebalances the storage resources when the workload changes, and this feature helps to maintain the performance and availability of the storage system. The author also notes that the threshold for Automatic Rebalancing can be set between 15% to 30%, and if the threshold is set too low, it may cause frequent rebalancing and impact the performance.

The article highlights that Proactive Rebalancing is a more efficient approach than Reactive Rebalancing, as it predicts and prevents performance issues before they occur. The author also notes that vSAN 6.7U3 and later versions have removed the manual rebalancing feature and now rely solely on Automatic Rebalancing.

The article concludes by emphasizing the importance of setting the Automatic Rebalancing threshold appropriately to avoid frequent rebalancing and maintain optimal performance. The author also recommends that users should not set the threshold too low, as it may cause performance issues. Overall, the article provides a detailed overview of Automatic Rebalancing in vSAN and its benefits, as well as some best practices for setting the threshold.