SAP HANA is the SAP database platform for multiple SAP solutions. In changing direction to former classic SAP solutions, HANA is the processing core of it all. Operations that have formerly performed at application layers have moved into the database layer and are now performed by the HANA engines. SAP HANA works by loading all the data into memory, which is why it is called an in-memory database. This is the most key factor that allows SAP HANA to run analytical reports in seconds as opposed to minutes, or in minutes as opposed to hours, allowing real-time analysis of analytical data.
Here are 5 things to know about SAP HANA on IBM Power Systems:
1. SAP allows flexibility in a TDI implementation of HANA on IBM Power Systems.
The SAP HANA TDI architecture helps you to build an environment using your existing hardware such as servers, storage, SAN and network switches. There is a set of configuration and settings that work best for a HANA on a Power Systems implementation. This configuration and these settings are seen by many customers as the ones that bring the most performance and stability, less management and maintenance effort, and better understanding of the environment. By supporting TDI in the deployment of SAP HANA, Power Systems give organizations choice over the technology they use, compared to the rigidly defined hardware appliances used in many competing SAP HANA infrastructures.
2. IBM Power Systems PowerVM virtualization for SAP HANA.
IBM PowerVM virtualization is fully supported by SAP, allowing customers to deploy SAP HANA in a virtual environment that supports both dedicated and shared processor resources, running both production and non-production workloads in a single server. IBM Power Systems provides flexibility to meet the individual needs of organizations deploying SAP HANA. One aspect of this flexibility is that a robust virtualization is supported, ready for use, and helps consolidating multiple SAP HANA virtual machines on a single Power Systems server. Virtualization with PowerVM also provides ability to handle the varying utilization patterns that are typical in SAP HANA workloads. Dynamic capacity sizing allows for fast, granular reallocation of compute resources among SAP HANA virtual machines. This approach to load balancing and tailoring capacity to the workload enhances agility compared to competing processor architectures that require capacity to be allocated in larger chunks.
3. High availability (HA) and disaster recovery (DR) for SAP HANA.
The costs of downtime have increased over time, so companies are paying more attention to high availability (HA) today than in the past. Also, the costs for HA solutions have decreased considerably in a way that makes much more sense to invest in protecting business continuity than to undertake the downtime costs. From a business continuity perspective, you can protect your systems by creating a local HA plan to ensure the minimum Recovery Time Objective (RTO) possible, and protect your business from a complete site failure (DR). There are options available for high availability and disaster recovery: SAP HANA Host Auto-Failover (Scale-Out with Standby), SAP HANA System Replication + SuseHA, SAP HANA Storage Replication, and SAP HANA System Replication.
4. SAP HANA Systems Replication (HSR).
SAP HANA Systems Replication is a contingency solution that is used to duplicate your HANA database. This means that it uses a completely different system (that is, another operating system instance), a distinct set of disks, and a different database instance than the primary ones. In summary, it is based on having two totally independent HANA environments host the same data. The data is created on the primary system and replicated to the secondary system over the network through TCP/IP. If a failure of the primary system occurs, you can choose to have the secondary one take-over.
5. IBM service and productivity tools for Linux on POWER.
IBM Power Systems is known for its prominent level of reliability, availability, and serviceability (RAS). The difference between an ordinary Linux for x86 image and a Linux on IBM Power image is that the latter has a layer of additional added value software to enable Linux to take advantage of Power System hardware and virtualization features, such as dynamic logical partition (DLPAR) operations, resource monitoring and control (RMC) communication with the Hardware Management Console (HMC), and other functions.
SAP notes change constantly. Validate all notes before you start implementing your HANA environment because SAP guidelines and statements change frequently. For SAP notes, refer to the following website (SAP ONE Support Launchpad): http://launchpad.support.sap.com/
For more information about SAP HANA on IBM Power Systems, refer to the following:
IBM Power Systems for SAP HANA
IBM Power Systems Home Page
SUSE Linux Enterprise High Availability Extension 12 SP2 Documentation
Automate your SAP HANA System Replication Failover
Implementing High Availability and Disaster Recovery Solutions with SAP HANA on IBM Power Systems Redbooks publication
Rodrigo Ceron Ferreira de Castro