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Produced by Wellesley Information Services, LLC, publisher of SAPinsider. 2015 Wellesley Information Services. All rights reserved. Preparing Your Technical Landscape for an SAP HANA Installation Dr. Bjarne Berg COMERIT Slide 2 1 In This Session This session examines, in detail: The most critical sizing, integration, and performance factors you must address when adopting SAP HANA Trends amongst hardware vendors for virtualization, cloud and hosted systems, including options, requirements, and costs associated with network, backup, and application servers How the SAP HANA database uses persistent storage to provide a fallback, and how fault tolerance, disaster recovery and high-availability can be set up for your SAP HANA implementation Slide 3 2 Introduction Dr. Berg Slide 4 3 What Well Cover Hardware sizing, planning and the cloud Top 10 lessons learned from SAP HANA implementations Landscape deployment planning Backup High availability Wrap-up Slide 5 4 Hardware Options Sept 2015 Onward Slide 6 5 Example: IBM 3850 X6 Slide 7 6 Hardware Options Sept 2015 Onward These systems are based on Intels E7 IvyBridge processors with 15 cores per processor, or the newer Hartswell processors with 18 cores. Slide 8 7 Cloud Options Slide 9 8 Support Packages SAP has introduced the idea of production verified revisions to provide in-depth testing of all service packs for SAP HANA Based on the planned releases over the next months, customers should adjust their plans for service packs accordingly Source: SAP SE Slide 10 9 Sizing Overview There are several sizing options depending on the software components: BW system for HANA QuickSizer New implementation only, not migrations BW Automated Sizing Tool in the Migration Cockpit Rule of Thumb T-Shirt Sizing Business Suite system for HANA QuickSizer for Business Suite on HANA Automated Sizing Tool Vendor Tools Standalone HANA System Slide 11 10 SAP QuickSizer for HANA There are three versions of the tool for each version of SAP HANA SAPs QuickSizer for SAP HANA is available at: http://service.sap.com/quicksizer. * Requires login credentials to the SAP Service Marketplace. The last is for those who want to use SAP HANA as a standalone platform for in- memory data (i.e., using SAP Data Services to load data to) The second QuickSizer version is for SAP HANA on SAP BW The QuickSizer for the Business Suite allows you to size for specific modules Slide 12 11 If youre using planning in SAP BW, enter the info here. The fields marked with * are mandatory. For H-PLAN-1, enter the maximum concurrent users in the USERS field. The S.T. and E.T. fields are the start and end times for the processing. By entering this type of information, youll get estimates of loads on the SAP HANA system by time periods at the end of the sizing exercise. Enter the estimated number of information consumers (H-BW-INFO), business users (H- BW-BUSI.), and experts (H-BW-EXPER). SAP suggests a ratio of 71%, 26% and 3% for each user group, but you can enter your own mix if you have better estimates. SAP QuickSizer for New BW HANA Implementations Slide 13 12 SAP QuickSizer for New BW HANA Implementations (cont.) In the INITIAL LOAD field, you enter the number of records in the existing InfoCube, and in the PERIOD. UPLD field, you enter the number of records you estimate will be loaded periodically. Enter the InfoCube and DSO information. The max number of dimensions (DIM) you can enter for the InfoCube is 13. The three fixed dimensions of BW are already included, so just enter the free dimensions. The field KEYF. refers to the number of key figures in the fact table of your InfoCube, while the field COM. is the estimated compression. If you dont have better estimates, a rate of 5 may serve for the initial sizing before you refine the estimates with your hardware vendor. Slide 14 13 This SAP HANA sizing example calls for 1.6TB of memory SAP QuickSizer for BW on HANA Output In this case, SAP HANA for BW will deploy the master data, ABAP system tables, and most row store data on the master node. The other connected Index server node(s) will contain the InfoCubes and DSOs. Slide 15 14 HANA Sizing Tool for Existing BW Implementations Using the BW Automated Sizing tool in the Migration Cockpit Slide 16 15 HANA Sizing Tool for Existing BW Implementations SAP has released an updated tool that generates a report significantly better for sizing SAP BW than using the QuickSizer. This tool should be used by all existing BW implementations for sizing (QuickSizer is only for new implementations). This program takes into consideration existing databases, table types, and includes 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 suppress analysis tables with less than 1 MB size With 8 parallel processors and 10TB database, it is not unusual to see 4-5 hours runtime Slide 17 16 SAP BW on HANA Automated 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 referenced in SAP Notes 1909597 and 1736976 on the Service Marketplace The output is stored in the file you specified and the file can now be emailed to hardware vendors for sizing input and hardware selection Slide 18 17 Sizing for Business Suite on HANA SAP has also created a similar program for sizing HANA for Business Suite: This should be used for all HANA migration projects of ECC to Business Suite Slide 19 18 Sizing for Business Suite on HANA (cont.) Some vendors have also created their own sizing programs, which also include hardware prices Slide 20 19 QuickSizer for Business Suite on HANA For New BusinessSuite implementations you can use QuickSizer and send the results to SAP for further processing Slide 21 20 QuickSizer for Business Suite on HANA (cont.) This is the input screen where you enter the number of expected transactions by module. You are also asked to enter estimated changes and new records as well as operating times of your system. Here you get the size in SAPS, as well as memory and disk requirements Slide 22 21 Sizing a Standalone HANA System Output This is the input screen Here you get the size in SAPS, as well as memory and disk requirements Slide 23 22 Rule-of-Thumb Approach to Sizing HANA Memory Memory can be estimated by taking the current system size and running the programs in get_size.zip in SAP Note 1637145 to get row and column store sizes for your system The 50GB is for HANA services and caches. The 1.5 is the compression expected for rowstore tables and the 4 is the compression expected for column store tables. The 2- factor refers to the space needed for runtime objects and temporary result sets in HANA. Finally, the term existing DB compression is to account for any compression already done in your system (if any). Memory = 50GB + [ (rowstore tables footprint / 1.5) + (colstore tables footprint * 2 / 4) ] * Existing DB Compression Remember, these are quick rules of thumb, so dont rely on it for finalized budgeting and hardware purchases Slide 24 23 Rule-of-Thumb Approach to Sizing HANA Disk The next item you need is disk space, which can be estimated by the following: In this example, you need 4 x 710GB disk for the persistence layer and about 710GB for the logs. This equals around 3.5TB (dont worry, disk space of this size is now almost cheap). The persistence layer is the disk that keeps the system secure and provides for redundancy if there are any memory failures, so its important not to underestimate this. Disk for persistence layer = 4 Memory Disk for the log = 1 Memory Remember, these are quick rules of thumb, so dont rely on it for finalized budgeting and hardware purchases Slide 25 24 Rule-of-Thumb Approach to Sizing BW on HANA CPU The CPUs are based on the number of cores that you include. For example, 18 core CPUs now exist (depending on when you bought your system). If you have a single node with 8 x 18 cores, you will have 144 cores and can handle 720 active BW users on that hardware node, and quite a larger number of named users. CPU = 0.2 CPU cores per active user Slide 26 25 A T-Shirt Model for Sizing HANA on BW A 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 starting to consider 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. Slide 27 26 Summary of HANA Sizing Approaches Work with your preferred vendor before ordering your hardware or finalizing your budgets Approach Quality of EstimateEffort Required T-Shirt Sizing Sort of OKVery Low Rule of Thumb Better Low SAP QuickSizer Much better (new implementations only) High Sizing for programs Excellent (for existing BW systems) Moderate/Low SAP Note 1736976 (ABAP report to help with BW on HANA Sizing) SAP Note 1909597 (SAP BW Migration Cockpit for SAP HANA) SAP Note 1729988 (SAP BW Checklist for Migration) SAP Note 11855041 (Sizing the Master node) Slide 28 27 What Well Cover Hardware sizing, planning and the cloud Top 10 lessons learned from SAP HANA implementations Landscape deployment planning Backup High availability Wrap-up Slide 29 28 1. Buy Hardware Early 1. The typical lead time for basic HANA appliances is as little as 4-8 weeks 2. However, for large scale environments, or multi-node environments, the lead times can sometimes be as long as 10-14 weeks 3. This is particularly true for virtualized systems managed by a third- party who has to set them up, configure backup and learn the new technology Get a small team on site early for planning, budgeting and sizing; and hold off staffing all team members from the business until you get a confirmed hardware delivery date Slide 30 29 2. Get the Right Team Members 1. While there are many with basic certifications in HANA, the pool of qualified experienced resources is limited 2. Great HANA resources are most likely working on another project already 3. So, if you want the best, be prepared to give your implementation partner several weeks lead time Do you want who is available or who should be available on your project? Be prepared to give your implementation partner longer lead times than usual. Slide 31 30 3. Include Training for Your Staff 1. There are a lot of myths and beliefs about HANA that you have to address early 2. Before you start the project, make sure your implementation partner has a formal written training plan on how they will provide knowledge transfer 3. Include your support staff and Basis people in all project discussions from the first planning session Many are fearful of a new technology and are unsure how this will change their work. You should provide real demos and workshops early so that everyone knows what is happening and how HANA will change their day-to-day jobs. Slide 32 31 4. Hardware Sizing Should Include Growth 1. Some customers forget that sizing would be for 3 years out and not based on current system size alone 2. You should have a sizing estimate that includes new projects, data growth and data retention policies, as well as periodic scheduled clean up activities Funding for hardware is sometimes easier in a project mode, and many companies plan for 30-50% more capacity as part of the initial rollout if they can afford it Slide 33 32 5. Master-Node Size for Scaleout BW on HANA 1. Some hardware vendors want to maximize the number of processes available to the users. They can do this by using multiple smaller nodes with many processors in each. 2. The drawback is that most of your row data and master data may not fit on the small node as you grow. Pay very careful attention to the row-stores sizes and the master data growth when buying hardware. You dont want to have to upgrade shortly after go-live. Slide 34 33 6. Create an Ecosystem of Experts 1. Having access to the best and brightest within SAP, consulting firms, and industry experts is key when issues or questions arise 2. These people are very busy and are often engaged on many projects as supporters Formally assign a team of 2-3 experts to come in and meet with your team a few times during the project planning and execution. Make sure these project advisors are hands- on and that they can act as technical go-to resources for your team if questions arise. Slide 35 34 7. Think BIG 1. A HANA implementation should not be treated as a replacement project. It is an enabler 2. Plan ahead on what you are going to do with the new technology, e.g., mobile, forecasting, planning, BI dashboards, customer and vendor facing analytics, market basket analysis, stratification, data visualization, etc. Early in the project create a 2-3 year strategic plan that demonstrates to the leadership what you are going to do with this new technology. Present it as new capabilities not just how fast it is Slide 36 35 8. Plan for Reporting and System Consolidation 1. After go-live you should have planned for how you are going to migrate all reporting and management analytics on to HANA and away from datamarts and standalone expensive systems that are not integrated into the long-term vision 2. You will most likely have to do some selling to your fellow employees and be prepared to give them free access to your HANA system HANA is not just for BW or Business Suite. It is an enterprise platform for integrated analytical and data processing. You can give developers access to your system and they can build their own Agile marts inside HANA, even if they dont want to use BW. Slide 37 36 9. Near-Line Storage Can Save Millions 1. Removing data that is not needed on a daily basis from your system and placing it on near-line storage (NLS) instead of in-memory can save you millions 2. In one project a customer took his system from 112TB to 38TB by simply moving data to near-line storage. 3. An Asian firm took a 3.8TB BW system to only 900GB after cleanup and an NLS implementation. There are many NLS solutions available that can save you lots of money by reducing the need for multi-node, multi-terabyte HANA systems. Take a serious look at SAP IQ solution for NLS. It is tightly linked with HANA already. Slide 38 37 10. Save Money with MCOD and MCOS 1. You may not need separate hardware for sandbox and development environments 2. Using Multiple Components One Database (MCOD) and/or Multiple Components One System (MCOS) you can simplify the number of hardware environments you need a) SAP BW on SAP HANA b) SAP Finance and Controlling Accelerator for the material ledger c) ERP operational reporting with SAP HANA d) SAP Finance and Controlling Accelerator: Production Cost Planning e) SAP Rapid Marts f) SAP COPA Accelerator g) SAP Operational Process Intelligence h) SAP Cash Forecasting i) SAP Application Accelerator/Suite Accelerator j) Smart Meter Analytics In addition to custom developed datamarts, all items above can run in an MCOD setup (see SAP Note 1666670 for more details) Slide 39 38 What Well Cover Hardware sizing, planning and the cloud Top 10 lessons learned from SAP HANA implementations Landscape deployment planning Backup High availability Wrap-up Slide 40 39 Landscape Deployment Planning Virtualization MCOS MCOD Technical Co-Deployment Deployment Scenario HANA DBs Multiple One DB Schema Multiple One Availability Supported for DEV & QA systems Defined by: White List 1661202 for BW White List 1826100 for Suite Business Suite components SCM and/or SCM co-deployed with ERP Source: SAP SE 2015 Slide 41 40 Landscape Deployment Planning Virtualization (On Premise) Share hardware resources for multiple Suite systems and HANA instances with virtualization techniques. Virtualization technology separates multiple OS images, each containing one HANA DB. n x Virtualized Appliances n x HANA DB n x DB Schema n x Applications Strengths Only one HANA system needed Resource mgmt per virtual instance possible (RAM, CPU, Storage) Easy scalability Different Server Level Agreements per virtual machine possible Independent deployment and maintenance per instance (OS, HANA) Weaknesses Performance impact Virtualization overhead Source: SAP SE Slide 42 41 Landscape Deployment Planning One database schema per database Separate virtual machine and OS Separate SAP HANA databases per SAP system Shared hardware and storage Currently supports VMware 5.5 and higher Usage Scenarios Non-production systems Single-node SAP HANA databases up to 1TB See SAP Note 1788665 Slide 43 42 Multiple Components One System (MCOS) Share hardware for HANA among multiple Suite system to reduce TCO 1 x Appliance n x HANA DB n x DB Schema n x Applications Strengths Only one HANA system and one OS required HANA software can be individually maintained per DB instance Dedicated memory assignment per instance Weaknesses Shared HANA hardware Risk of performance issues since no dedicated CPU assignment per instance No separate Service Level Agreements on database level SAP currently does not support MCOS configuration on a production system (SAP Note 1681092) Source: SAP SE 2015 Source: SAP SE Slide 44 43 Multiple Components One Database (MCOD) Provides the ability to install several components independently on a single database 1 x Appliance 1 x HANA DB n x DB Schema n x Applications Strengths Versatility through components and only one HANA instance necessary Cross-schema reporting supported and separate upgrades possible Different operating systems and databases Highest scalability possible Weaknesses Maintaining different operating systems and databases Shared HANA software version and maintenance processes Risk of performance issues Lack of resource management capabilities Complex high availability solutions Synchronizing backup and restore Source: SAP SE 2015 See SAP Notes: 1661202 HANA MCOD scenario whitelist 1826100 SoH MCOD scenario whitelist 1666670 BW specific considerations Slide 45 44 Classical Technical Co-Deployment Appliance approach for optimal performance No additional system required and a reduction of operations effort Cross-application reporting possible 1 x Appliance 1 x HANA DB 1 x DB Schema 1 x Application (e.g., ERP, CRM, or BW) Strengths Coordinated start-stop functionality Reduced operation exertion for DB/OS/Backup/Basis Multiple application servers can be shared Simplified application landscape setup, deployment and maintenance Option to scale out into separate deployment Reduced TCO on application level Weaknesses Restrictive enhancement package dependencies Source: SAP SE 2015 Slide 46 45 Landscape Deployment Planning- BusinessSuite on HANA Classical Technical Co-Deployment One SAP HANA database and one database schema One AS ABAP application server/SID Available for SRM and SCM as ERP add-on Usage Scenarios Production and non-production systems Can be combined with Virtualization or MCOS Slide 47 46 What Well Cover Hardware sizing, planning and the cloud Top 10 lessons learned from SAP HANA implementations Landscape deployment planning Backup High availability Wrap-up Slide 48 47 Backup Supports synchronous backup between production system and backup storage Alerts can be setup to monitor whether backups are being done as expected Two primary methods of backing up: Traditional File BACKINT API for third-party vendors Slide 49 48 Backup (cont.) There are 4 basepath options for traditional file backups in HANA Basepath data backup Standard backups to external mount point Basepath data volumes Permanent location for data volumes Basepath log backup External mount point for logs segment to be copied Basepath log volumes Permanent location for log volumes IBM offers a backup management solution called Tivoli Storage Manager SAP provides a script in SAP Note 1651055 to help clean up log files Many backup features are now automated including removal of log segments after backup These basepath options are available in the Configuration tab in HANA Studio Source: SAP SE 2015 Slide 50 49 Standby Systems and Backup Monitoring It is possible to keep a warm standby system that is ready to come online in the event of a failure Hosts can also be on standby in the event of host issues HANA includes a service auto-start that restarts any service that may fail Alerts can be set to monitor to see if the backups are being successful inside the admin console under the Alerts tab Slide 51 50 What Well Cover Hardware sizing, planning and the cloud Top 10 lessons learned from SAP HANA implementations Landscape deployment planning Backup High availability Wrap-up Slide 52 51 High Availability (HA) SAP HANA supports HA and recovery measures ranging from faults and software errors to disasters that decommission an entire data center HA can be achieved by eliminating single points of failure (fault tolerance) Providing the ability to rapidly resume operations after a system outage with minimal business loss (fault resilience) The SAP HANA database provides several features in support of high availability, one of which is basically a service auto-restart In the event of a failure or an intentional intervention by an administrator that disables one of the SAP HANA services, the SAP HANA service auto-restart function automatically detects the failure and restarts the stopped service process High Availability is a set of techniques, engineering practices and design principles for Business Continuity Slide 53 52 High Availability (HA) (cont.) Additional SAP HANA appliances used in standby mode for failover You have the capability to assign up to three master servers as the name server (one is selected as the active server) Active server assigned master index server If active master name server fails, the systems restores itself to available standby master The number of standby servers defined during installation cannot subsequently be reduced, but standby servers can be added after installation Slide 54 53 Scale Out High Availability High Availability Configuration N active servers in one cluster M standby server(s) in one cluster Shared file system for all servers Failover Server X fails Server N+1 reads indexes from shared storage and connects to logical connection of server X SAP HANA cold standby host Standby host is kept ready for the event that a failover situation occurs during production operation Standby host is not used for database processing All the database processes run on the standby host, but they are idle and do not allow SQL connections Source: SAP SE 2015 Slide 55 54 What Well Cover Hardware sizing, planning and the cloud Top 10 lessons learned from SAP HANA implementations Landscape deployment planning Backup High availability Wrap-up Slide 56 55 Where to Find More Information www.sap-press.com/sap-hana_3687 Bjarne Berg and Penny Silvia, SAP HANA: An Introduction (3rd edition, SAP PRESS English and German Editions). www.saphana.com/welcome SAPs main page for all SAP HANA-related information www.saphana.com/community/try SAP HANA demos http://scn.sap.com/community/bw-hana SAP BW Powered by SAP HANA Community Slide 57 56 7 Key Points to Take Home There are programs to do pre-readiness checks for an ERP and BW system for migration to HANA A BW Migration Cockpit is now available to assist in the tasks While one is more common, there are actually four possible approaches to the HANA migration project There are currently seven different certified HANA vendors and many options for small, medium, and large systems Make sure you get a competitive bid Budgeting should include HANA training and system cleanup, as well as support staff required or reorganized Most HANA projects can be done in a matter of weeks Only extremely large systems may require 4-7 months Slide 58 57 Your Turn! How to contact me: Dr. Bjarne Berg bberg@comerit.com Please remember to complete your session evaluation Slide 59 58 Disclaimer SAP and other SAP products and services mentioned herein as well as their respective logos are trademarks or registered trademarks of SAP SE (or an SAP affiliate company) in Germany and other countries. All other product and service names mentioned are the trademarks of their respective companies. Wellesley Information Services is neither owned nor controlled by SAP SE.