You can deploy ExpressRoute or virtual private network (VPN) gateways across zones to guard against zone failures. Global Reach can be used for HANA Large Instances in two scenarios: In Azure regions where Global Reach is offered, you can request enabling Global Reach for your ExpressRoute circuit. For high-availability scenarios, Azure shared disk features are available on Azure Premium SSD and Azure Ultra Disk Storage. Not for dummies. Therefore, the use of multiple NICs is unnecessary for performance considerations. The service is designed to reduce the complexity and operational overhead of managing Kubernetes, which includes efficiencies in the operational cost of the cluster. For more information about hub-and-spoke networking models, see Hub-and-spoke network topology. For more information, see SAP HANA (Large Instances) infrastructure and connectivity on Azure. Azure These host names are assigned to the cluster front-end IP configuration of the load balancer. See the upper right in the figure. You can achieve high availability by using redundant Web Dispatcher instances. With the visibility provided by the comprehensive logging solution, you can implement automation to scale the components of the system in real time. You can group VMs by name and secure applications by filtering traffic from trusted segments of your network. In a hybrid hub-spoke topology, the hub VNet in Azure acts as a central point of connectivity to your on-premises network. | Disclaimer | Sitemap You can connect the Azure ExpressRoute gateway to a maximum of four ExpressRoute circuits, but only if those connections come from different Microsoft Enterprise Edge Routers (MSEEs). This tier includes the Fiori front-end server pool, the SAP Web Dispatcher pool, the application server pool, and the SAP Central Services cluster. The availability level depends on the size of the application that's behind Web Dispatcher. Consider these resources: This article is maintained by Microsoft. First, create spoke virtual networks where you can place your servers. The on-premises infrastructure previously shown is connected through ExpressRoute into Azure. Purely for the exchange between the HANA DBMS side and JDBC/ODBC-based applications, however, you can enable encryption of traffic. There's no cost for an availability set. They may also run completely in Azure. Phone: 650-931-2505 | Fax: 650-931-2506 By default deployment, three network routing considerations are important for SAP HANA on Azure (Large Instances): SAP HANA on Azure (Large Instances) can be accessed only through Azure VMs and the dedicated ExpressRoute connection, not directly from on-premises. When you operate on Azure, you have many segmentation options. Techmeme A layer 3 router, such as the Azure Firewall, in the hub is required to enable connectivity. Azure Route Server is the glue that holds together the routing tables being learned from the ExpressRoute to on-prem, the native Azure spoke virtual network routes, the default route, and any site-to-site VPN routes advertised from the NVA firewalls. Replicate your shared services into the DR region by using whatever means the services provide. It's important to read that article, especially if you've deployed SAP systems in proximity placement groups in the past. It's customary to place the shared file systems on highly available NFS storage by using SUSE DRBD or Red Hat GlusterFS. The communication flow between the two virtual networks in the two Azure regions is supposed to be handled over the global peering of the two virtual networks in the two different regions (blue dotted line). A jump-box virtual machine (VM) and private endpoints (VmSubnet). You can build a VM in the DR region to run the Central Services role. The web app could be an Azure Functions app. Azure NICs support multiple IPs. Provides a structured approach for designing highly available firewalls in Azure using third-party virtual appliances. Use the Azure pricing calculator to estimate costs. To handle such bursts, we highly recommend using the UltraPerformance gateway SKU. A recent update to SAP note 2015553 excludes the use of standard HDD storage and standard SSD storage for a few specific use cases. Load Balancer is a network transmission layer service (layer 4) that balances traffic by using a five-tuple hash from data streams. Microsoft Defender for Cloud: a unified security management and threat protection system for workloads across on-premises, multiple clouds, and Azure. In this distributed installation of the SAP application, the base installation is replicated to achieve high availability. The VM running IPTables must be deployed in the Azure virtual network that connects to HANA Large Instances and to on-premises. Repeat to connect the Spoke-02 virtual network: connection name - hub-spoke-02. Exceptions apply when using ExpressRoute FastPath (see below). The spoke is the virtual network that's used for the SAP applications and the database tiers. Azure ExpressRoute is the recommended Azure service for creating private connections that don't go over the public internet, but you can also use a Depending on the Azure region, values can exceed the 0.7-ms round-trip latency classified as below average in SAP Note #1100926 - FAQ: Network performance. Shows how to deploy a set of network virtual appliances (NVAs) for high availability in Azure. Your on-premises assets must connect through ExpressRoute to Azure. In this article, we'll look at the network architecture for deploying SAP HANA on Azure Large Instances (otherwise known as BareMetal Infrastructure). In this scenario, Azure load balancers are used to distribute traffic to VMs in the application tier subnet. VPN device. To define fine-grained network security policies that are based on workloads and centered on applications, use application security groups instead of explicit IP addresses. By default, no traffic is allowed between any two VNets. For performance considerations to keep in mind when you use Azure NetApp Files, see Sizing for HANA database on Azure NetApp Files. We recommend that you use Azure Standard Load Balancer for all SAP scenarios. For more information, see Azure Proximity Placement Groups for optimal network latency with SAP applications. Azure To access SAP notes, you need an SAP Service Marketplace account. For recommendations about storage configurations for various VM sizes when you run SAP HANA, see SAP HANA Azure virtual machine storage configurations. When you use an Azure shared disk in Linux clusters, the Azure shared disk serves as a STONITH block device (SBD). You can run both under the same Azure subscription provided these instances are part of the same SAP landscape. Describes how to use resources spread across multiple zones to provide a high availability architecture for hosting an Infrastructure as a Service (IaaS) web application and SQL Server database. If there's a regional disaster that causes a mass failover event for many Azure customers in one region, the target region's resource capacity isn't guaranteed. To optimize inter-server communications, use Accelerated Networking. System routing provides default connectivity to any workload in any subnet. The following list shows the control that addresses datacenter security in this reference: There are costs for the on-premises side of your ExpressRoute circuit. Load Balancer supports multiple frontend IPs, so both the Central Services and ERS virtual IPs (VIPs) can be configured to one load balancer. We recommend that you evaluate the cost savings and avoid placing too many systems in one cluster. To provide SAP-based monitoring of resources and service performance of the SAP infrastructure, use the Azure SAP enhanced monitoring extension. All SAP systems in Azure set up in virtual networks to communicate with each other. Use a centralized identity management system to control access to resources at all levels: Provide access to Azure resources through Azure role-based access control (Azure RBAC). We recommend Azure managed disks. Use Linux clustering for failover. Shared resources in a central hub virtual network connect to applications in separate spoke virtual networks through virtual network peerings. SAP has its own Users Management Engine (UME) to control role-based access and authorization within the SAP application and databases. No default connectivity between spoke networks. Describes the different connectivity options for interconnecting a private Software Defined WAN (SD-WAN) with Azure Virtual WAN. Set up network security groups by using the Azure portal, PowerShell, or the Azure CLI. Global Reach, however, opens up communication between HANA Large Instance units in different regions. A disaster recovery site should be at least 100 miles from the primary site, in case of a natural disaster. For information about setting up peering, reference Virtual network peering. The global transit network architecture is based on a classic hub-and-spoke connectivity model where the cloud hosted network 'hub' enables transitive connectivity between endpoints that may be distributed across different types of 'spokes'. The workload profile between the SAP application layer and the HANA Large Instance is of a different nature. Azure offers different services that allow you to run the DBMS, NetWeaver, and S/4HANA systems in Azure. Azure network services, as previously discussed, with virtual networks, which again need ExpressRoute gateways added. If a regional outage affects the primary region, you can use Front Door to fail over to the secondary region. On SLES 15 SP1 and later or SLES for SAP Applications, you can set up a Pacemaker cluster by using Azure shared disks for Linux. EKM-04 recommends the use of standard algorithms. For more information, see ExpressRoute virtual network gateway and FastPath. To access SAP notes, you need an SAP Service Marketplace account. Similarly, ExpressRoute Global Reach can be used to connect two HANA Large Instance tenants deployed in different regions. NSG or ASG provides network layer support only. We also recommend that you consider performance when you deploy resources with PsPing and For example, don't place an ASCS node in the same availability set as application servers. You can define your communication rules and apply them consistently. The cost of data transfer is a reason to place active front-end servers that run Fiori apps in the same virtual network as the S/4 systems. You can choose to deploy Horizon exclusively in a single Azure VMware Solution data center without linking it to any other Horizon pod. In Azure regions that support this feature, at least three zones are available. Internet routable addresses should be stored in Azure Public DNS. For advanced configurations, use a hub-spoke topology. The aspects of application security set a foundation for the use of this reference architecture to support a Spring workload in Azure. Still, customers successfully deploy SAP HANA-based production SAP applications on SAP HANA Large Instances. The workaround is to connect all virtual networks to the ExpressRoute circuit directly. In this example deployment, the Linux cluster support for ASCS multi-SID installation on Azure is now generally available. This connection allows the HANA Large Instance units of your tenants in different regions to communicate with each other. Aggregate NSG, ASG logs across all virtual networks. Deployments vary based on business requirements, so consider these recommendations as a starting point. The network services that you need, such as Secure Sockets Layer (SSL) termination. If you need to be in multiple regions, have multiple VNets that are connected through peering. As a result, FastPath lowers network latency, improves application performance, and is the default configuration for new ExpressRoute connections to Azure. Use HSR for HANA-supported replication. Download a Visio file of this architecture. To improve network security, consider using a perimeter network that uses an NVA to create a firewall in front of the subnet for Web Dispatcher and the Fiori front-end server pools. It's not intended to describe a full enterprise network. vWAN hub workflow: Azure Virtual WAN is deployed with a hub. Terraform modules are used to deploy a new virtual network that has four subnets that host: The AKS cluster (AksSubnet). To enable outbound internet in the VMs, you must update your Standard Load Balancer configuration. The architecture also filters traffic between central services in the hub and resources in the spoke. Of course, use of CPA is optional. Be aware that implementation and support for custom solutions involving third-party network appliances or IPTables isn't provided by Microsoft. For HANA, use only HANA data encryption. Encryption and Key Management Entitlement, Encryption and Key Management Key Generation, Encryption and Key Management Sensitive Data Protection, Encryption and Key Management Storage and Access. EKM-01 recommends that all cryptographic keys have identifiable owners so that they can be managed. Support must be provided by the vendor of the component used or by the integrator. Put VMs that perform the same role into the same availability set. Data transferred between HANA Large Instances and VMs isn't encrypted. Both Azure Virtual WAN hub and Azure Route Server Ensure that Network Watcher is 'Enabled'. Azure Monitor: an all-encompassing suite of monitoring services for applications that deploy both in Azure and on-premises. Describes the three common patterns used for organizing workloads in Azure from a networking perspective. This part is your (the customer's) domain and is connected to Azure through ExpressRoute. The architecture of Azure network services is a key component of successfully deploying SAP applications on HANA Large Instance. When you use Azure NetApp Files, use its native cross-region replication feature to replicate content for the /sapmnt share of the DR SAP system. You can combine these aspects to ensure that the service runs efficiently in production environments, as described in the following list: Azure Spring Apps is built on AKS. 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