High Availability & Disaster Recovery. Sivagopal Modadugula/SAP HANA Product Management Session # 0506 May 09, 2014

Transcription

1 High Availability & Disaster Recovery Sivagopal Modadugula/SAP HANA Product Management Session # 0506 May 09, 2014

2 Legal Disclaimer The information in this document is confidential and proprietary to SAP and may not be disclosed without the permission of SAP. This presentation is not subject to your license agreement or any other service or subscription agreement with SAP. SAP has no obligation to pursue any course of business outlined in this document or any related presentation, or to develop or release any functionality mentioned therein. This document, or any related presentation and SAP's strategy and possible future developments, products and or platforms directions and functionality are all subject to change and may be changed by SAP at any time for any reason without notice. The information on this document is not a commitment, promise or legal obligation to deliver any material, code or functionality. This document is provided without a warranty of any kind, either express or implied, including but not limited to, the implied warranties of merchantability, fitness for a particular purpose, or non-infringement. This document is for informational purposes and may not be incorporated into a contract. SAP assumes no responsibility for errors or omissions in this document, except if such damages were caused by SAP intentionally or grossly negligent. All forward-looking statements are subject to various risks and uncertainties that could cause actual results to differ materially from expectations. Readers are cautioned not to place undue reliance on these forward-looking statements, which speak only as of their dates, and they should not be relied upon in making purchasing decisions. This presentation and SAP s strategy and possible future developments are subject to change and may be changed by SAP at any time for any reason without notice. This document is 2014 SAP AG. All rights reserved. provided without a warranty of any kind, either express or implied, including but not limited to, the implied warranties of merchantability, fitness for a particular purpose, or non-infringement 2

4 High Availability Disaster Recovery Agenda Business Continuity High Availability Disaster recovery per Center between Centers 1 SAP HANA Host Auto-Failover (Scale-Out with Standby) 3 SAP HANA Storage Replication 2 SAP HANA System Replication Performance Optimized Cost Optimized 4 SAP HANA System Replication Performance Optimized Cost Optimized 2013 SAP AG. All rights reserved. 4

5 HA & DR Concepts in general Classification of solutions system operational operation resumed Sync or backup RP O RTO design & prepare detect recover perf. ramp time KPIs: Recovery Point Objective (RPO) = worst-case data-loss Recovery Time Objective (RTO) = time to recover from outage Solution Used for Cost RP O RTO Perf. ramp Backup & Recovery HA & $ hig high med DR h SAP HANA Host Auto-Failover HA $ 0 med long SAP HANA Storage Replication DR $$ 0* med long w/ QA, Dev. ** single host installations *synchronous solution SAP HANA System Replication HA & DR $$$ 0* low short 2013 SAP AG. All rights reserved. 5

7 Storage Connector API Shared Storage SAN Storage SAP HANA High Availability: Host Auto-Failover High Availability configuration N active servers in one cluster M standby server(s) in one cluster Shared file system for all servers Services and index server on all nodes Statistics server (only on one active server) server active on Standby Server 1 Server 2 Server 3 Server 4 Failover Server X fails Server N+1 reads indexes from shared storage and connects to logical connection of server X Storage Connector API ensures remount of necessary disk areas (Note Storage Connector API Attachments) Server 5 Server 6 Standby Server 2013 SAP AG. All rights reserved. 7

8 HANA High Availability Host Auto-Failover (standby) Different implementation of High Availability by HW partners Using storage solution inside Using internal disk Serve r Serve r Serve r Serve r Standb y Server Server GPFS GPFS 2013 SAP AG. All rights reserved. 8

10 HA Solution Partner HA Solution Partner SAP HANA High Availability: System Replication Performance Optimized Center 1 OS: DNS, hostnames, virt. IPs Internal Primary (active) Server server Clients Transfer by HANA database kernel Application Servers Secondary (active, data pre-loaded) Server server Internal Performance optimized option Secondary system completely used for the preparation of a possible take-over Resources used for data preload on Secondary Take-overs and Performance Ramp shortened maximally 2013 SAP AG. All rights reserved. 10

11 HA Solution Partner HA Solution Partner SAP HANA High Availability: System Replication Cost Optimized Center 1 OS: DNS, hostnames, virt. IPs Internal Primary (active) Server server Clients Transfer by HANA database kernel Application Servers Secondary PRD shadow Server operation PRD server QA/DEV running Internal QA/DEV Cost optimized with Operating non-prod systems on Secondary Resources freed (no data preload) to be offered to one or more non-prod installations During take-over the non-prod operation has to be ended Take-over performance similar to cold start-up 2013 SAP AG. All rights reserved. 11

12 SAP HANA High Availability Comparison of minimal setups for available solutions Scale-Out 1+1 (Host Auto-Failover) System Replication with both alternatives (1+1) active Master Server Server standby Server Server Internal Primary (active) Server server Transfer by HANA database kernel Secondary (active, data pre-loaded) Server server Internal Performance optimized (data pre-loaded) or Cost optimized Secondary PRD shadow Server operation server QA/DEV running Storage System PRD QA/DEV 2013 SAP AG. All rights reserved. 12

14 Storage Mirroring HA Solution Partner HA Solution Partner SAP HANA Disaster Recovery: Storage Replication Cluster across Centers with non-prod on 2 nd site Center 1 Clients OS: DNS, hostnames Application Servers Center 2 Arrangement usually offered with a strong part of hardware partners involvement Primary Secondary Prod. (inactive), QA&DEV (active) Support issues handled by/routed to HW partners Nam e Serv er Inde x serve r Nam e Serv er Inde x serve r OS: Mounts Nam e Serv er Inde x serve r Server server Server server Server server TCO reduction by combined operation with non-prod on Secondary Needs another disk stack for non-prod usage load Cluster management often included and delivered as a whole package 2013 SAP AG. All rights reserved. 14

15 HA & DR solutions from hardware vendors with certified HANA offering May 2014* (only China) Scale Out (BW) S - L M M, L M M S - L M M M High Availability DR Storage Repl.: Async DR Storage Repl.: Sync X X X X X X X X X X X X planne d X X X X X X Another asynchronous solutions for SAP HANA Storage Replication certified, SAP note adapted * For most up to date list please go to the SAP Product Availability Matrix (Westmere) or SAP AG. All rights reserved. 15

17 HA Solution Partner HA Solution Partner SAP HANA Disaster Recovery: System Replication Cluster across Centers with DB controlled transfer Center 1 OS: DNS, hostnames, virt. IPs Nam e Serv er Inde x serv er Primary (active) Nam e Serv er Inde x serv er Clients Nam e Serv er Inde x serv er Transfer by HANA database kernel Application Servers Center 2 Secondary (active, data pre-loaded) Serve r server Serve r server Serve r server Performance optimized option Faster Take-Over Shortened Performance Ramp (seconds to less minutes) SYNC & ASYNC possible Several cluster options Some HW Partners offer prepackaged options OS: Mounts Step-by-Step Implementation Guide: SAP AG. All rights reserved. 17

18 HA Solution Partner HA Solution Partner SAP HANA Disaster Recovery: System Replication Cluster across Centers with non-prod operation on 2 nd site Center 1 Clients Application Servers Center 2 Cost Optimized option SYNC & ASYNC possible OS: DNS, hostnames, virt. IPs Nam e Serv er Inde x serv er Primary (active) Nam e Serv er Inde x serv er OS: Mounts Nam e Serv er Inde x serv er Transfer by HANA database kernel Secondary (active,) PRD shadow Serve Serve operation r r server QA/DEV server running Serve r server TCO reduction by combined operation with non-prod on Secondary Needs another disk stack for non-prod usage load Step-by-Step Implementation Guide: PRD QA/DEV 2013 SAP AG. All rights reserved. 18

19 SAP HANA in Centers Cluster Manager with direct SAP HANA System Replication Support HP Service Guard Directly available from HP and HP drives the implementation process Link for further information: tbd SUSE Cluster Included with SUSE SLES for SAP Applications Blog: Fail-Safe Operation of SAP HANA : SUSE Extends Its High-Availability Solution SAP Landscape Virtualization Manager (SAP LVM) Consulting package to create a cluster manager with SAP LVM available Other cluster managers In pipeline or can be adapted with individual consulting packages Note: No solution certification is offered for cluster managers Support is handled by solution partner directly 2013 SAP AG. All rights reserved. 19

21 SAP HANA Zero Downtime maintenance Featured by SAP NetWeaver ABAP stack As an evolution of Near Zero Downtime Maintenance, SPS7 now offers Zero Downtime Maintenance Based on connectivity suspend feature of the SAP NetWeaver ABAP stack (SAP note ) o DBSL of the database interface decouples transaction management between ABAP and HANA database o This keeps transaction on ABAP layer alive and allows to change components (software versions) on the layers below on secondary (shadow) HANA instance Further information also in Step-by-Step Implementation Guide for SAP HANA System Replication: Hardware mix (SAP note Using HANA System Replication for Hardware Exchange with minimum Downtime) SAP HANA Version Server server Walldorf Primary Server server Server server SAP NetWeaver ABAP Server DBSL Software Upgrade Order Sync/Async mirrored redo log writing Transport incremental data SAP HANA Version +1 Server server Rot Secondary Server server Server server 2013 SAP AG. All rights reserved. 21

22 Center Setups with Pre-load Option Multi Tier System Replication Cascading Systems First level Second level Third level Center Center Production Local standby with data preload Remote standby system with or without preload (mixed usage with non-prod.) Available with SAP HANA (Three cascading systems with SPS7) 2013 SAP AG. All rights reserved. 22

24 SAP Business SAP HANA usage in production SAP s financial accounting system running SAP Business Suite on HANA Scale-Out 2+1 (local High Availability) Secured with SAP HANA System Replication Center: St. Leon-Rot Center: Walldorf SAP s CRM system running SAP CRM on HANA Scale-out 2+1(local High Availability) Secured with SAP HANA System Replication SAP s BW system running SAP CRM on HANA Scale-Out 8+1(local High Availability) No DR Distance: about 10 km Redundant connections: SAP AG. All rights reserved. 24

26 SAP HANA Disaster Recovery News with SAP HANA SPS07 and Beyond System Replication extension Multi Tier System Replication allowing first 1:n setups: Three cascading systems in a row Zero Downtime maintenance Compressed log transfer Basic encryption for internal communication o More 1:n relationships for shadow instances o Time travel via internal snapshots on shadow instance to handle logical errors o More asymmetric options (n m) o Time delay option between sites Shipping o Based on backup files (initial data, sub sequential log, steady roll forward) Planned beyond System Replication extension o Pure -based transfer o Backup on shadow instance o Online Add Host & Remove Host on Secondary o Active/Active Operation (r/o reporting on Sec.) 2013 SAP AG. All rights reserved. 26

27 2014 SAP AG. All rights reserved. No part of this publication may be reproduced or transmitted in any form or for any purpose without the express permission of SAP AG. The information contained herein may be changed without prior notice. Some software products marketed by SAP AG and its distributors contain proprietary software components of other software vendors. National product specifications may vary. These materials are provided by SAP AG and its affiliated companies ("SAP Group") for informational purposes only, without representation or warranty of any kind, and SAP Group shall not be liable for errors or omissions with respect to the materials. The only warranties for SAP Group products and services are those that are set forth in the express warranty statements accompanying such products and services, if any. Nothing herein should be construed as constituting an additional warranty. SAP and other SAP products and services mentioned herein as well as their respective logos are trademarks or registered trademarks of SAP AG in Germany and other countries. Please see for additional trademark information and notices. This presentation and SAP s strategy and possible future developments are subject to change and may be changed by SAP at any time for any reason without notice. This document is 2014 SAP AG. All rights reserved. provided without a warranty of any kind, either express or implied, including but not limited to, the implied warranties of merchantability, fitness for a particular purpose, or non-infringement 27

28 Thank you Sivagopal Modadugula Product Management & Strategy (SAP HANA) SAP Labs LLC, Palo Alto, CA

29 FOLLOW US This presentation and SAP s strategy and possible future developments are subject to change and may be changed by SAP at any time for any reason without notice. This document is 2014 SAP AG. All rights reserved. provided without a warranty of any kind, either express or implied, including but not limited to, the implied warranties of merchantability, fitness for a particular purpose, or non-infringement 29

30 THANK YOU THANK YOU FOR PARTICIPATING Please provide feedback on this session by completing a short survey via the event mobile application. SESSION CODE: 0506 For ongoing education on this area of focus, visit This presentation and SAP s strategy and possible future developments are subject to change and may be changed by SAP at any time for any reason without notice. This document is 2014 SAP AG. All rights reserved. provided without a warranty of any kind, either express or implied, including but not limited to, the implied warranties of merchantability, fitness for a particular purpose, or non-infringement 30