SAP High Availability
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What Is High Availability?
High availability (HA) is the ability of a system to operate continuously without failing for a designated period of time. HA ensures a system meets an agreed-upon operational performance level. Availability is expressed as a percentage:
- 99% = 87.6 hours of annual downtime
- 9% = 8.76 hours of annual downtime
- 99% = 52 minutes of annual downtime
- 999% = 5 minutes of annual downtime.
High availability usually equals 99.999% or better. HA is achieved by eliminating single points of failure and providing the ability to rapidly resume operations after a system outage with minimal business loss.
What Is SAP High Availability?
SAP has put in place plans and procedures that enable SAP ERP and other critical systems to keep on running. A high-availability solution for SAP needs to achieve four core goals:
- Minimize downtime
- Eliminate data loss
- Maintain data integrity
- Enable flexible configuration.
For example, SAP offers the Standalone Enqueue Server 2 (ENSA2) as a component of Application Server ABAP to provide high availability. It supports two-node and multi-node clusters, which enables switchover to ENSA2 to ensure continued system availability. In addition, SAP High Availability Failover enables SAP Adaptive Server Enterprise (SAP ASE) to work in a cluster of servers in a specific configuration, enabling failover and failback on servers.
Further Resources for SAPinsiders
SAP High Availability Best Practices in AWS. In this webinar, Brett Barwick, Senior Software Engineer of SIOS Technology Corp., and Tamara Astakhov, Senior Partner, Solution Architect for Big Data & Analytics, AWS, discuss best practices for SAP high availability and how to achieve near-zero downtime.
The 15 Most Overlooked Items in Planning for High Availability and Disaster Recovery. In this article, Kurt Bishop, a retired member of SAP America’s Technical Consulting Team, offers advice on how to avoid costly mistakes by sharing the 15 most overlooked items — including the cost of downtime, security issues, loss of personnel and systems, and the importance of testing — and discussing how to incorporate them into recovery planning.
Architecting a High Availability SAP NetWeaver Infrastructure: Strategies for Ensuring a Successful, Cost-Effective Implementation. In this article, Matt Kangas, U.S. Product Manager for SAP NetWeaver Application Server at SAP Labs, provides an overview of HA basics and then discusses the technical details of an HA setup with SAP NetWeaver, including topics such as architectural single points of failure and ways to isolate and protect such failure points.
Vendors that can assist SAP customers with high availability include: AWS, Google Cloud, Microsoft, Managecore, Red Hat, Saberpoint, SIOS, SUSE, Virtustream, and Zebra Technologies.
872 results
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Accurate Order Promising through Global ATP in a Consolidation Environment
Reading time: 29 mins
Learn how to implement rules-based available-to-promise (ATP) in a consolidation scenario including the use of multi-level ATP. Key Concept Fixed pegging is the process of establishing the relationship of a receipt document to the requirement document it fulfills. This linkage is not broken when receipts or requirements are rescheduled in time or through a planning…...…
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Take Control of Order Confirmations with Backorder Processing in APO
Reading time: 36 mins
Find out how the sort profile and filter type affect backorder processing (BOP). In this example based on a real-world scenario, see how the author developed a workaround that allowed the company to use the material availability date as a sort criterion for BOP. Key Concept Backorder processing (BOP) is a critical step in sales…...…
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How Rights Inventory Management Works in SAP IPM
Reading time: 23 mins
See how an SAP system handles the media industry’s need to manage intellectual property and to avoid the conflicts that can arise when an intangible product is licensed in multiple ways. Key Concept SAP Intellectual Property Management (SAP IPM) is part of the industry-specific offering SAP for Media. It sits on top of SAP CRM…....…
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- SAP Customer Experience
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Combine Product Interchangeability with Iterative Rules-Based Availability to Deliver the Right Quantity to Customers
Reading time: 19 mins
Learn how to use the rules-based availability check method along with product interchangeability in SAP Advanced Planning and Optimization (SAP APO) Global Available-To-Promise (Global ATP). It allows you to substitute one product with another by following a list of rules for substitution at different product location combinations. Key Concept In product interchangeability, one product is…...…
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Make Promises You Can Keep with GATP
Reading time: 35 mins
As product portfolios grow and customer lists expand, your ability to make and keep critical delivery commitments may be getting tenuous. SAP APO’s Global Available to Promise (GATP) technology offers the tools you need to take the guesswork out of the delivery planning process. Its flexibility makes GATP applicable to many industries. Key Concept Global…...…
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- SAP APO
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Enable Global ATP to Provide Differential Customer Service
Reading time: 23 mins
Learn how to enable Global Available-to-Promise (Global ATP) to optimally allocate sales order confirmations considering various customer parameters and business needs. Key Concept Key configuration objects such as check instructions and scope of check play a very important role during an availability check. Check instructions control what availability check methods are called during the available-to-promise…...…
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Inventory Planning and Optimization with SAP Advanced Safety Stock Planning and SAP SmartOps
Reading time: 27 mins
Read two case studies to learn how to implement SAP APO Advanced Safety Stock Planning (ASSP) and SAP SmartOps Enterprise Inventory Optimization (EIO). Key Concept SAP SmartOps Enterprise Inventory Optimization (EIO) provides a comprehensive, enterprise-wide process for optimizing, managing, and monitoring inventory stocking levels for finished product and raw material components across the supply chain. …...…
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Introduce Budget Availability Control into Cost Center Accounting
Reading time: 14 mins
Learn how you can configure budget availability control for your Cost Centers with simple customizing steps. Key Concept Budget availability control in the managerial accounting (CO) and Project System (PS) modules is a standard SAP functionality that automates budget control through warnings and error messages. It also can send notification emails automatically to respective budget…...…
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- SAP S/4HANA
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HANA Migration: Ensuring High Availability and Minimizing Disruptions
Reading time: 5 mins
SAP S/4HANA migration is not just about adopting a new technology but ensuring HANA becomes the robust and reliable foundation for continued innovation and growth. As 2027 end-of-maintenance deadline approaches, businesses must invest the required care, resources, and expertise to transition successfully without disruptions. With the right preparation and commitment to availability, companies can unlock…
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- SAP APO
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Meeting Demand with a Constrained Supply Using Product Allocation in SAP APO Global ATP
Reading time: 22 mins
Learn the process flow of how product allocation can be used in SAP Advanced Planning and Optimization (SAP APO) Global available-to-promise (Global ATP) to meet customer requirements by managing the supply of scarce products. The system can perform availability checks in conjunction with product allocation checks. Key Concept Availability checks, also known as available-to-promise (ATP),…...…
Featured Insiders
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Prathyusha Garimella
Senior Engineer at SAP America, Inc.
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Sherry Yu
Global Alliance Director - SAP Success Architect, SUSE
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Craig L. Brown, Sr.
Chief Transformation Architect, Xceleon, LLC
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