Quick Sizer, SAP's online sizing tool, can assist you in translating the business requirements of your new SAP solution into hardware-independent sizing recommendations. The Quick Sizer is available for free on the SAP Service Marketplace for customers and partners.
To get a basic sizing recommendation from the Quick Sizer, follow these steps:
1. Go to http://service.sap.com/quicksizing
2. Create a sizing project and fill in the online questionnaire with the relevant information, such as number of users or expected data volume
3. Get an initial sizing result for CPU, disk size and disk I/O, and memory
4. If necessary, add additional guidelines; for example, to account for IDocs sent from server A to server B, you would add 10% load per object on the emitting system
5. Check for sample hardware configurations at www.sap.com/benchmark
6. Provide hardware vendor with Quick Sizer project name and additional guidelines
7. Use the results you obtain to help select a balanced system that matches your company's business goals
Find more information on SAP Netweaver Tutorials
The Quick Sizer contains independently calculated sizing methods: user sizing, and throughput sizing. User sizing - which renders CPU, memory, and disk sizing estimates based solely on the number, type, and distribution of users - is helpful for small businesses. Throughput sizing, which predominantly determines CPU, memory, disk size, and I/O sizing estimates based on business objects and transactions, is absolutely required for high-volume business.
The CPU sizing results are calculated against a target CPU utilization of 65% for throughput based sizings (and 33.3% for user based sizings). Ideally you would observe 65% CPU utilization if you ran the same processes used in the Quick Sizer and purchased hardware to meet the CPU sizing recommendations, which are measured according to the SAP Application Performance Standard (SAPS).
For example, if your Quick Sizer CPU result is 10,000 SAPS, you can view a number of very different platforms, CPU types, and configurations that have achieved this result in an SD two-tier benchmark, and are therefore comparable and likely to fulfill your system requirements.
- Disk size and disk I/O
The actual disk size depends on the platform compression. SAP's disk recommendation only considers the size of the DB tables in the SAP Data Dictionary (plus offset for an empty installation).
Read more on SAP Abap Tutorials
- For throughput sizing you also get a result for disk I/O.
The memory recommendations are relatively hardware-independent. Note that SAP assumes one physical application server, and thus accounts for the memory needed for buffers and caches on that server, as well as on the database. If you eventually employ numerous application servers, simply add the requirements.
If you cannot find a particular application or partial solution in the Quick Sizer, there may be different reasons for this. For example, if you are using a newly developed solution, SAP would prefer to do an initial one-on-one sizing to learn how customers make use of the new solution. Or, if the projected load of the solution you are looking for is negligible, the application may not be included in the Quick Sizer.
Beyond the Quick Sizer, other sizing tools provided by SAP include:
Specify the applications used
- A simple sizing guideline, which SAP has termed T-Shirt Sizing, uses basic algorithms (with many assumptions) to provide recommendations for small, medium, large, and extra large configurations.
- In some cases, SAP provides offline formulas to do some simple calculations, such as in the case of network sizing.
- Sometimes the solutions are so complex that a tool would be insufficient to provide a meaningful result. In the case of SAP Accounting for Financial Instruments (AFI), for example, a questionnaire helps you collect the needed information. After completing the questionnaire, you would send it to a sizing expert at SAP who provides sizing results such as SAPS, disk, disk I/O, and memory.
Through a combination of these sizing tools and techniques, SAP can provide clear answers and recommendations as you approach and conduct your sizing projects.
All currently available sizing information is published for customers and partners at
service.sap.com/sizing -> sizing guidelines -> solutions & platform.
With Quick Sizer, you can enjoy the following benefits:
- Simplified sizing – free of charge – based on business oriented figures
- Verification of sizing made by partners or customers (the tool is part of the sizing plausibility check)
- Online, up to date sizing algorithms based on the SAP Standard Application benchmarks
- Proven sizing methodology
- Close cooperation with SAP technology partners
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