SAP systems are used to run mission-critical business applications. Any outage disrupts key processes and can cause increased expenses or lost revenue. Avoiding these outcomes requires an SAP infrastructure that is highly available and resilient when failures occur.
Building a highly available SAP environment requires eliminating single points of failures in your system architecture and processes. Single points of failure can be caused by site failures, errors in system components, or even human error.
This example scenario demonstrates an SAP deployment on Windows or Linux virtual machines (VMs) on Azure, along with a High Availability (HA) Oracle database. For your SAP deployment, you can use VMs of different sizes based on your requirements.
Relevant use cases
Other relevant use cases include:
- Mission-critical workloads running on SAP.
- Non-critical SAP workloads.
- Test environments for SAP that simulate a high-availability environment.
This example includes a high availability configuration for an Oracle database, SAP central services, and multiple SAP application servers running on different virtual machines. The Azure network uses a hub-and-spoke topology for security purposes. The data flows through the solution as follows:
- Users access the SAP system via the SAP user interface, a web browser, or other client tools like Microsoft Excel. An ExpressRoute connection provides access from the organization's on-premises network to resources running in Azure.
- The ExpressRoute terminates in Azure at the ExpressRoute virtual network (VNet) gateway. Network traffic is routed to a gateway subnet through the ExpressRoute gateway created in the hub VNet.
- The hub VNet is peered to a spoke VNet. The application tier subnet hosts the virtual machines running SAP in an availability set.
- The identity management servers provide authentication services for the solution.
- The jump box is used by system administrators to securely manage resources deployed in Azure.
Virtual Networks are used in this scenario to create a virtual hub-and-spoke topology in Azure.
ExpressRoute extends your on-premises network into the Microsoft cloud through a private connection established by a connectivity provider.
Network security groups limit network access to the resources in a virtual network. A network security group contains a list of security rules that allow or deny network traffic based on source or destination IP address, port, and protocol.
Resource groups act as logical containers for Azure resources.
SAP provides flexible options for different combinations of operating system, database management system, and VM types in an Azure environment. For more information, see SAP note 1928533, "SAP Applications on Azure: Supported Products and Azure VM Types".
Recommended practices are defined for building highly available SAP environments in Azure. For more information, see High-availability architecture and scenarios for SAP NetWeaver. Also, see High availability of SAP applications on Azure VMs.
Oracle databases also have recommended practices for Azure. For more information, see Designing and implementing an Oracle database in Azure.
Oracle Data Guard is used to eliminate single points of failure for mission-critical Oracle databases. For more information, see Implementing Oracle Data Guard on a Linux virtual machine in Azure.
Microsoft Azure offers infrastructure services that can be used to deploy SAP products with an Oracle database. For more information, see Deploying an Oracle DBMS on Azure for an SAP workload.
To help you explore the cost of running this scenario, all of the services are pre-configured in the cost calculator examples below. To see how the pricing would change for your particular use case, change the appropriate variables to match your expected traffic.
We have provided four sample cost profiles based on amount of traffic you expect to receive:
|Size||SAPs||DB VM Type||DB Storage||(A)SCS VM||(A)SCS Storage||App VM Type||App Storage||Azure Pricing Calculator|
|Small||30000||DS13_v2||4xP20, 1xP20||DS11_v2||1x P10||DS13_v2||1x P10||Small|
|Medium||70000||DS14_v2||6xP20, 1xP20||DS11_v2||1x P10||4x DS13_v2||1x P10||Medium|
|Large||180000||E32s_v3||5xP30, 1xP20||DS11_v2||1x P10||6x DS14_v2||1x P10||Large|
|Extra Large||250000||M64s||6xP30, 1xP30||DS11_v2||1x P10||10x DS14_v2||1x P10||Extra Large|
This pricing is a guide and only indicates the VMs and storage costs. It excludes networking, backup storage, and data ingress/egress charges.
Small: A small system consists of VM type DS13_v2 for the database server with 8x vCPUs, 56-GB RAM, and 112 GB of temporary storage, along with five 512-GB premium storage disks; an SAP Central Instance server using a DS11_v2 VM types with 2x vCPUs, 14-GB RAM, and 28 GB of temporary storage; and a single VM type DS13_v2 for the SAP application server with 8x vCPUs, 56-GB RAM, and 400 GB of temporary storage, along with one 128-GB premium storage disk.
Medium: A medium system consists of VM type DS14_v2 for the database server with 16x vCPUs, 112 GB RAM, and 800 GB of temporary storage, along with seven 512-GB premium storage disks; an SAP Central Instance server using a DS11_v2 VM types with 2x vCPUs 14-GB RAM and 28 GB of temporary storage; four VM type DS13_v2 for the SAP application server with 8x vCPUs, 56-GB RAM, and 400 GB of temporary storage, along with one 128-GB premium storage disk.
Large: A large system consists of VM type E32s_v3 for the database server with 32x vCPUs, 256-GB RAM, and 800 GB of temporary storage, along with three 512 GB and one 128-GB premium storage disk; an SAP Central Instance server using a DS11_v2 VM types with 2x vCPUs, 14-GB RAM, and 28 GB of temporary storage; six VM type DS14_v2 for the SAP application servers with 16x vCPUs, 112 GB RAM, and 224 GB temporary storage, along with six 128-GB premium storage disks.
Extra Large: An extra-large system consists of the M64s VM type for the database server with 64x vCPUs, 1024 GB RAM, and 2000 GB of temporary storage, along with seven 1024-GB premium storage disks; an SAP Central Instance server using a DS11_v2 VM types with 2x vCPUs 14-GB RAM and 28 GB of temporary storage; ten VM type DS14_v2 for the SAP application servers with 16x vCPUs, 112 GB RAM, and 224 GB of temporary storage, along with ten 128-GB premium storage disks.
Click the link below to deploy the solution.
SAP and Oracle are not installed during this deployment. You will need to deploy these components separately.
For other information about running SAP production workloads in Azure, review the following reference architectures: