Deployment Introduction

This section describes the deployment scheme of SAP application AS.

Figure 1 shows the deployment scheme.

Figure 1 Deployment scheme

The description is as follows:

• VPC network: All SAP HANA nodes are deployed within a VPC, and all ECSs and HANA ECSs in the SAP HANA system belong to the same availability zone (AZ) to ensure security.
• Public subnet:
  • Network Address Translation (NAT) server ECS: allows you to access HANA ECSs using Secure Shell (SSH).
  • SAP HANA Studio ECS: runs the SAP HANA Studio software. You can use Remote Desktop Protocol (RDP) or SSH to access the SAP HANA Studio ECS and manage the SAP HANA system.
• Private subnet:
  • HANA ECS: used for deploying the SAP HANA software.
  • PAS and ASCS ECSs: used to deploy the SAP S/4HANA software and the AS service. Table 1 lists the disks required by the ECS.

    Table 1 Disks required by an SAP S/4HANA ECS

    Disk	Description
    OS disk	provides the directory for installing the OS.
    sapmnt disk	provides the directory for installing SAP S/4HANA and the AS service.

  • AAS ECS: is expanded after AS is triggered.