Built on the Red Hat Enterprise Linux operating system (OS), Red Hat Enterprise Linux for SAP expands existing capabilities so you can get the most out of SAP's powerful analytics and data management portfolio. Red Hat Enterprise Linux High Availability (HA) provides all the necessary packages for configuring pacemaker based cluster that provides reliability and availability for critical production services. Extended Update Support (E4S) provides support on specific minor releases for 4 years from General Availability. Note the software charges listed are for the additional functionality provided in this product. The platform cost includes a charge for the use of the base Red Hat Enterprise Linux OS of $0.06/hr for smaller instances and $0.13/hr for larger instances. Please refer to https://aws.amazon.com/ec2/pricing/reserved-instances/pricing/ for further base RHEL OS + EC2 pricing details. When purchasing hourly or annual consumption, please ensure you take these costs into account for a clear picture of the overall cost.