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Introduction Sizing Your HANA System HANA Hardware Options Pre-Steps for BW to HANA Migration Four BW to HANA Migration Options

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Introduction Sizing Your HANA System HANA Hardware Options Pre-Steps for BW to HANA Migration Four BW to HANA Migration Options Staffing a HANA Migration Project Creating a Budget for your HANA Migration Project On-Going Support Tasks and Staff Required A Milestone Example Wrap-Up . - PowerPoint PPT Presentation

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IntroductionSizing Your HANA SystemHANA Hardware OptionsPre-Steps for BW to HANA Migration Four BW to HANA Migration OptionsStaffing a HANA Migration ProjectCreating a Budget for your HANA Migration ProjectOn-Going Support Tasks and Staff RequiredA Milestone ExampleWrap-Up

#IntroductionHANA is an in memory solution that can take large volumes of data, compress it, and store it for extremely fast access by thousands of users.

It is the engine of the next generation of computer systems for analytics and transaction processingSAP HANA, as of 2013, can be used as the in-memory database for BusinessSuite, BW and SAPs BusinessOne Solution

#An Alternative SAP BW on HANA Sizing ToolSAP has released a new ABAP based tool that generates a report significantly better sizing fro SAP BW than using just the QuickSizer above. This program takes into consideration existing database compression, different table types and also include the effects of non-active data on the HANA system.

The higher precision you run the estimate at the longer the program is going to run. To increase speed, you can also suppress analysis tables with less than 1 MB size. With 14 parallel processors and 8Tb data warehouse, it is not unusual to see 45-75 minutes run time. #SAP BW on HANA Sizing Tool Since timeouts are common when running the sizing program, you can temporarily change the parameter in rdisp/max_wprun_time to 0 in BW transaction RZ11. Finally, you estimate the growth for the system as a percentage, or as absolute growth.This program is attached to SAP Note: 1736976 on SAP MarketplaceAfter you have downloaded and installed the program, and-selected the parameters above, you can go to SE38 and run SDF/HANA_BW_SIZING as a background job.

The output is stored in the file you specified and the file can now be email emailed to hardware vendors for sizing input and hardware selection.

#A T-Shirt Model for Sizing HANA on BWA T-shirt model is a quick way to get some basic ideas on what a system may look like.

While very inaccurate for sizing, it provides basic information for those just staring considering SAP HANA

The number of processors are largely driven by the number of users and usage patterns. Serious consideration should be made before buying hardware.

#IntroductionSizing Your HANA SystemHANA Hardware OptionsPre-Steps for BW to HANA Migration Four BW to HANA Migration OptionsStaffing a HANA Migration ProjectCreating a Budget for your HANA Migration ProjectOn-Going Support Tasks and Staff RequiredA Milestone ExampleWrap-Up

#Hardware Options for HANA There are currently 7 different certified HANA hardware vendors with 13 different products. Some boxes can be used as single nodes with others are intended for scale-out solutions for large multi-node systems

#A HANA Hardware ExampleIn this box, we are see the inside of an IBM x3950 HANA system.

The system basically consists of memory, disk, processors and network cards The hardware vendor will install, connect and to a health check on your system before handing it over to you. A 3-year service plan is also normally required.

#IntroductionSizing Your HANA SystemHANA Hardware OptionsPre-Steps for BW to HANA Migration Four BW to HANA Migration OptionsStaffing a HANA Migration ProjectCreating a Budget for your HANA Migration ProjectOn-Going Support Tasks and Staff RequiredA Milestone ExampleWrap-Up

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SAP has a checklist tool for SAP NetWeaver BW powered by HANA (thanks Marc Bernard).

In this tool, SAP provided automatic check programs for both the 3.5 version and the 7.x version of BW. These are found in SAP Note: 1729988.

In version 2.x of this tool, hundreds of checks are done automatically in the BW system. This includes platform checks on database and application and system information. Pre-Steps Analyze BW ReadinessThere are even basis checks for support packs, ABAP/JAVA stacks, Unicode, BW releases, and add-ons to your system.

#Pre-Steps Analyze BW ReadinessThe idea of the checklist tool from SAP is that you run it several times throughout the project.

Once before you start, then periodically as you resolve issues and upgrade requirements, and then finally when the system has been migrated to HANA.

The checklist tool also has specific checks for the HANA system that can help you identify any issues before turning over the system to end users..

#New ABAP Check Program New!

#New ABAP Check Program New!

#New ABAP Check Program New!

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New ABAP Check Program New!#New ABAP Check Program New!

#Pre-Steps Cleaning up your BW SystemYou can save significant amounts of work by doing a cleanup effort before you start your HANA migration or a BW upgrade project.

For example, a international company had a BW system with over 108 TB, with only 36TB in the production box and the remaining data on their Near-Line Storage (NLS) solution.

This cleaned BW system saved them potentially millions of dollars in hardware and HANA licensing costs. It is not unusual to reduce a BW system size by 20-30% during a clean up effort.

#12 Pre-Steps Cleaning up your BW SystemClean the Persistent Staging Area (PSA) for data already loaded to DSOsDelete the Aggregates (summary tables). They will not be needed again.Compress the E and F tables in all InfoCubes. This will make InfoCubes much smaller.Remove data from the statistical cubes (they starts with the technical name of 0CTC_xxx). These contain performance information for the BW system running on the relational database. You can do this using the transaction RSDDSTAT or the program RSDDSTAT_DATA_DELETE to help you.Look at log files, bookmarks and unused BEx queries and templates (transaction RSZDELETE). Remove as much as possible of the DTP temporary storage, DTP error logs, and temporary database objects. Help and programs to do this is found in SAP Notes 1139396 and 1106393.

#12 Pre-Steps Cleaning up your BW SystemFor write-optimized DSOs that push data to reportable DSOs (LSA approach), remove data in the write- optimized DSOs. It is already available in higher level objects.

Migrate old data to Near-Line Storage (NLS) on a small server. This will still provide access to the data for the few users who infrequently need to see this old data. You will also be able to query it when BW is on HANA, but it does not need to be in-memory.

Remove data in unused DSOs, InfoCubes and files used for staging in the BW system. This include possible reorganization of masterdata text and attributes using process type in RSPC

#12 Pre-Steps Cleaning up your BW SystemYou may also want to clean up background information stored in the table RSBATCHDATA. This table can get very big if not managed. You should also consider archiving any IDocs and clean the tRFC queues. All of this will reduce size of the HANA system and help you fit the system tables on the master node.

In SAP Note 706478, SAP provides some ideas on how to keep the basis tables from growing too fast too fast in the future, and if you are on Service Pack 23 on BW 7.0, or higher, you can also delete unwanted masterdata directly (see SAP Note: 1370848).

Finally, you can use the program RSDDCVER_DIM_UNUSED to delete any unused dimension entries in your InfoCubes to reduce the overall system size.

#IntroductionSizing Your HANA SystemHANA Hardware OptionsPre-Steps for BW to HANA Migration Four BW to HANA Migration OptionsStaffing a HANA Migration ProjectCreating a Budget for your HANA Migration ProjectOn-Going Support Tasks and Staff RequiredA Milestone ExampleWrap-Up

#Four Options for Migrating BW to HANAStandard BW to HANA migration without OptimizationBW to HANA migration with OptimizationBW to HANA migration as a Re-implementation Migrate a Copy of BW to HANA

A major decision before you start is to determine which of these options your want to pursue. We will now take a quick look at each of them

There are basically 4 different approaches to migrating your BW system to SAP HANA. Each are slightly different. They may be summarized as:

#1. Standard BW to HANA migration without Optimization In this approach you treat your BW move to HANA as a database migration project.

This means that you start with the BW system, complete the cleanup and preparations outlined above and migrate the database over to SAP HANA, but leave the application logic and data models the same.

After the migration you will have your database system as HANA, but there are no model changes to your system and there will be no impact to your queries, link to NLS, interfaces or data loads, except for substantially faster performance and some internal changes how HANA processes at the database level (i.e. data activation and compression). Functionally, you have the same system and this approach is therefore the fastest and most common.

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2. BW to HANA migration with OptimizationIn this approach the migration also involve the optimization of data structures to take advantage of the new capabilities in HANA. This may include HANA optimized Infocubes and DSOs, and HANA hints on data transformations to make lookups go faster.

This migration approach is a technical and functional upgrade at the same time. While the impact is minimal, significant additional performance in data loads, and query performance can be achieved.

For very large BW systems, this approach can be very time consuming

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