ESXI5-VM-000001 - The system must control virtual machine access to host resources - 'Memory share'


By default, all virtual machines on an ESXi host share the resources equally. By using the resource management capabilities of ESXi, such as shares and limits, you can control the server resources that a virtual machine consumes. You can use this mechanism to prevent a denial of service that causes one virtual machine to consume so much of the host's resources that other virtual machines on the same host cannot perform their intended functions.


From the vCenter client, select the Datacenter/host. Right-click the VM select Edit Settings to configure the virtual machine's memory and/or CPU limits, shares, and/or reservation(s). Appropriate values must be set for memory, CPU, advanced CPU, and disk variables. With the appropriate (site-specific) level selected for the VM, select the OK button to save any change(s).

Supportive Information

The following resource is also helpful.

This security hardening control applies to the following category of controls within NIST 800-53: Configuration Management.This control applies to the following type of system VMware.