VMware - Memory Repossessed alarm

When VMware experiences memory pressure, it reclaims memory so that it can be allocated to other virtual machines. This has the potential to affect the performance of the virtual machine, depending on how VMware reclaimed the memory

VMware - Virtual Machine Heartbeat alarm

The VMware - Virtual Machine Heartbeat alarm shows the status of communication between the VMware VirtualCenter and the VMware Tools on the virtual machine.

VMware - Virtual Overhead alarm

The VMware - Virtual Overhead alarm is raised when Virtualization Overhead is greater than a threshold and CPU Usage is 95% or higher. When the alarm is raised this indicates the virtual machine is not receiving all of the CPU time it is entitled to. This is caused by other virtual machines or by VMware itself consuming the available CPU. See your VMware administrator for ways to address this issue.