The following table describes the minimum system requirements to install a VMware virtual appliance. Note that these are minimum requirements. If your websites have high traffic load, please refer to the WAF Sizing Guide for some guidance on upsizing the virtual machine.
|Guest operating system||CentOS 64-bit|
|CPU||2 CPUs 64-bit|
|Disk space||250 GB|
|Virtual network interface(s)||An interface with an external IP address for management|
|Encryption/decryption for SSL traffic||AES-NI CPU instruction set for encryption/decryption of SSL traffic on VMs and host OS is recommended|
|Clustering||For clustering to work, ensure promiscuous mode, forged transmits, and MAC address changes are allowed on the VMware virtual switch (vSwitch) or the port group in the VMware ESX network configuration|