VM reports “Guest memory ballooning high.”

• Scenario / Problem Statement: VM performance degrades, and monitoring shows ballooning.

• Diagnosis:

  1. Check esxtop (press m ) for ballooning stats.

  2. Confirm VMware Tools balloon driver is active.

  3. Review host memory usage and resource pool limits.

• Likely Cause: Host memory overcommitment causing ballooning.

• Resolution: Add physical RAM to host, reduce VM memory allocation, or rebalance workloads across cluster.