Overview of migration options for ABAP-based systems to HANA Boris Zarske Product Manager for System Provisioning at May 2014
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Migration options Overview Option 1: New installation 1 2 3 Option 2: Classical migration Option 3: One-step upgrade and migration with DMO System Traditional DB You install new system on HANA Either without changing existing solutions (greenfield) Or for transforming existing solution to HANA by performing (selective) data migration Migration To bring original system on release supported by HANA, you perform update/upgrade (if required) Then, you classically migrate your traditional database to HANA You use database migration option (DMO) that combines upgrade and database migration in one step One process, one tool, one downtime 2014 AG or an affiliate company. All rights reserved. 3
Migration options & tools 1 1. New installation for transformation Overview Address changes to existing solution landscape by transformation with Landscape Transformation software with reduced effort to build targeted landscape (such as via shell creation with carve-out options + system consolidation) Complemented by transformation services (such as Data Management Services or System Landscape Optimization consulting services) Benefits Provides opportunity to correct design issues System consolidation Harmonize data as part of the migration (chart of account, master data) Leveraged flexibility by offering selective migration Migrate only specific data without business disruption (such as of last two years) Combine data cleansing leave unused master data behind Smoothly introduce new business processes (for example, new general ledger) Minimized downtime service available Challenges Increased effort to deploy (addressed by services) For more information: See Service Marketplace at: http://service.sap.com/saplt Contact: slo.consulting@sap.com subject: HANA 2014 AG or an affiliate company. All rights reserved. 4
Migration options 2 2. Classical migration: overview Overview You perform upgrade (if required) + heterogeneous system copy with classical migration tools Benefits Results in nearly identical system Minimal impact on functional teams Separation of concerns Challenges Application data, Repository Typically requires extended downtime (depending on DB size) and several downtime windows (depending on scope) With inclusion of upgrade, fallback to original state only possible via restore 2 System Traditional DB 1 1:1 Application data,... Repository System 2014 AG or an affiliate company. All rights reserved. 5
Migration options 2 2. Classical migration: phases 1 System Prepare System 2 Update/ Upgrade System 3 Migrate Split dual-stack Convert to Unicode Plan maintenance Perform maintenance Migrate to HANA Post-activities For more information, see Service Marketplace at: http://scn.sap.com/docs/doc-49744 2014 AG or an affiliate company. All rights reserved. 6
Involved migration tools 3 3. One-step upgrade and migration with DMO: overview Database Migration Option (DMO) of Software Update Manager (SUM) Prepare Update/ Upgrade Migrate Overview Relevant steps in one tool and one process, big bang approach Benefits Manual effort and error-proneness reduced Lower prerequisites for and DB start releases Only intermediate fallback effort, as original database could be reactivated Downtime optimized (depending on scenario) Only one downtime phase 2014 AG or an affiliate company. All rights reserved. 7
Time Migration options 3 3. One-step upgrade and migration with DMO phases during the procedure Traditional DB System 1 Upgrade Prepare 2 Execute Upgrade (until downtime phase) Switch 3 database connection Setup HANA specifics (client, schema ) Uptime For more information, see Service Marketplace at: http://scn.sap.com/docs/doc-49580 4 Migrate application data (incl. data conversion) 5 Finalize upgrade 6 Start HANA-based system Downtime 2014 AG or an affiliate company. All rights reserved. 8
Choosing the right option Standard recommendation Use as starting point for your individual assessment General Recommendation Reasonable Alternative Possible Exception DMO is the standard procedure for migrations to HANA profit from a simplified migration to HANA with minimized overall project costs! Classical migration If DMO does not fit your requirements, consider to use classical migration with software provisioning manager (continuously improved for this migration use case) New installation for transformation In addition, there are further migration procedures for special use cases, such as system consolidation or carve-out with SLO Shell Creation For more information, see end-to-end implementation guides available at: http://help.sap.com/nw74/#section7 ( NetWeaver ABAP 7.4) http://help.sap.com/nw731bwhana#section2 ( NetWeaver BW) 2014 AG or an affiliate company. All rights reserved. 9
Migration service offerings Rapid Deployment solutions and Active Global Support offerings For more information, see Service Marketplace at: http://service.sap.com/rds For more information, approach your local AGS contact person 2014 AG or an affiliate company. All rights reserved. 10
Summary 1 Database Migration Option has become the standard HANA migration option one tool for an optimized migration procedure to HANA 2 In case of special requirements (for example, in terms of landscape transformation), offers additional options to come to HANA 3 Service offerings allow a rapid and risk-mitigated migration to HANA 2014 AG or an affiliate company. All rights reserved. 11
Thank you Contact information: Boris Zarske Product Manager for System Provisioning boris.zarske@sap.com 2014 AG or an affiliate company. All rights reserved.
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