COMMON Europe Congress 2012 - Vienna

1. Christian Bartels – SAP on IBM i Development
11 June 2012
Business Continuity with
SAP on IBM i
Minimizing planned and unplanned downtime
© 2012 IBM Corporation
Business Continuity with SAP on IBM i
Agenda
Concepts of business continuity
Physical and logical data replication
SAP application availability
Live Partition Mobility
SAP near Zero Downtime Maintenance
2 © 2012 IBM Corporation
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2. Business Continuity with SAP on IBM i
Concepts of business continuity
Planned outages: Unplanned outages:
Software
maintenance Hardware
nZDM*) failure
Hardware
maintenance
Live Partition
Mobility
Offline Disaster
backup
Application Availability
Database
*) near Zero
maintenance
Data replication Downtime
Maintenance
3 © 2012 IBM Corporation
Business Continuity with SAP on IBM i
Independent Auxiliary Storage Pools (iASP)
System ASP IASP#1 IASP#2
/sapmnt/<sid> /IASP#1/sapmnt/<sid>
R3<sid>DATA
/sapmnt/trans /IASP#1/sapmnt/trans
/usr/sap/<sid>/... R3<sid>JRN
UDFS
Work manage-
SAP<sid>DB
ment objects
SAP<sid>JRN
SQL packages
Operating system
Single level storage – unique virtual address for each object
4 © 2012 IBM Corporation
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3. Business Continuity with SAP on IBM i
Operating system resiliency technology
Geographic Mirroring cluster
Page-level copy
• Independent ASPs on internal or external storage
• IBM i 6.1: Synchronous transmit only
• IBM i 7.1: Synchronous or asynchronous transmit
• IBM i Option 41, High Availability Switchable Resources
• Maximum distance dependent on link speed (latency)
5 © 2012 IBM Corporation
Business Continuity with SAP on IBM i
Storage resiliency technology
Metro Mirror / Global Mirror cluster
Boot from SAN
Flash copy
Tape backup
FlashCopy Metro/Global Mirror
Basic SAN Copy Services
• External storage only
• IBM i 6.1: DS6000™, DS8000®
• IBM i 7.1 TR3: SAN Volume Controller (SVC), Storwize® V7000
• IBM i Option 41, High Availability Switchable Resources
• IBM PowerHA® SystemMirror for i 7.1 (5770-HAS)
• IBM PowerHA® SystemMirror for i Enhancements (5799-HAS)
• Metro Mirror = synchronously, Global Mirror = asynchronously
6 © 2012 IBM Corporation
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4. Business Continuity with SAP on IBM i
Logical data replication
Logical replication
Remote journal
• Object-based replication through journaling
• Database and other objects (including IFS)
• Internal or external storage, no hardware dependencies
• Replication software offered by several vendors
• Concurrent data access
7 © 2012 IBM Corporation
Business Continuity with SAP on IBM i
IBM i clusters and cluster resource services
IBM i Cluster with PowerHA System Mirror for i
Application cluster resource group
CRG exit programm:
R3SAP400/SAPCRGEXIT
(installed with SAPHOSTAGENT)
Device cluster resource group
SAP NetWeaver database
and journal receiver libraries
(ABAP and Java)
Device cluster resource group
Global file system for SAP
Virtual host names – virtual (“takeover”) IP addresses
8 © 2012 IBM Corporation
4

5. Business Continuity with SAP on IBM i
SAP on IBM i distributed landscape
Clustered SAP central services
Physical host Switchover Switchover
cluster infrastructure cluster infrastructure
Application
SCS ASCS SCS ASCS
server 1
ERS ERS
Local file
system Local file Local file
system system
...
Clustered database
Independent Auxiliary Independent Auxiliary
Storage Pool (iASP) Storage Pool (iASP)
Physical host
Application
ABAP ABAP
server n schema schema
Java Java
schema schema
Local file
system
Clustered file system
Global file Global file
system system
9 © 2012 IBM Corporation
Business Continuity with SAP on IBM i
Redundant 2-tier SAP landscape
SCS ASCS ERS ERS
Web Web
dispatcher dispatcher
Application Application
server 1 server n
ABAP ABAP
2-tier or schema schema
2½-tier Java File Java
File schema schema
3-tier
system system
Central instance split up into central services for ABAP (ASCS) and Java (SCS).
Enqueue replication server (ERS) holding a replica of the lock table.
10 © 2012 IBM Corporation
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6. Business Continuity with SAP on IBM i
Installing SAP NetWeaver ABAP in a clustered environment
Primary /iASP/sapmnt/<sid>
Secondary
/sapmnt/<sid> /sapmnt/<sid>
/usr/sap/<sid>/SYS/exe SAPFShostV /usr/sap/<sid>/SYS/exe
/usr/sap/<sid>/SYS/global /usr/sap/<sid>/SYS/global
/usr/sap/<sid>/SYS/profile
SAPGLOBALHOST /usr/sap/<sid>/SYS/profile
/usr/sap/<sid> /usr/sap/<sid>
/usr/sap/<sid>/<instance> /usr/sap/<sid>/<instance>
ERS ERS
ASCS R3<sid>DATA ASCS
Appl.Svr. <sid>DBhostV Appl.Svr.
SAPDBHOST
<sid>ASCShostV <sid>ASCShostV
1. Install ASCS twice; once on each virtual host: primary and secondary.
2. Install ERS twice; once on each real host: primary and secondary.
3. Install DB once; only on the primary virtual host.
SAP Note 1635602
4. Install Central Instance once (for future upgrades)
5. Install additional Application servers anywhere on real hosts.
11 © 2012 IBM Corporation
Business Continuity with SAP on IBM i
Live Partition Mobility with POWER7® and IBM i 7.1 TR4
Move a running partition from one POWER7 server to another with
no application downtime → successfully tested with SAP on IBM i.
Movement to a
different server
with no loss of
service
Virtualized SAN and N etwork Infrastructure
Virtualized SAN and N etwork Infrastructure
Reduce planned downtime by moving Rebalance processing power
workloads to another server during across servers when and
system maintenance. where you need it.
12 © 2012 IBM Corporation
6

7. Business Continuity with SAP on IBM i
Requirements for Live Partition Mobility
Software
HMC/Firmware
HMC V7R7.5.0M0
Firmware: 740.40 or 730.51
VIOS 2.2.1.4
PowerVM Enterprise Edition Hardware and I/O
Operating system All I/O through the VIOS
IBM i 7.1 TR4 (SF99707 level 4) Virtual SCSI, NPIV (fibre channel),
Virtual Ethernet
External Storage
Same external storage to both
source and destination
POWER7 Hardware
https://www.ibm.com/developerworks/mydeveloperworks/wikis/home?lang=en#
/wiki/IBM%20i%20Technology%20Updates/page/Live%20Partition%20Mobility
13 © 2012 IBM Corporation
Business Continuity with SAP on IBM i
SAP concepts of downtime minimization for software maintenance
Any system based „Downtime Minimization Services“
Customer
on SAP NetWeaver of SAP Consulting and
projects
Technology SAP Active Global Support
„Near Zero Downtime Maintenance“ Planned
SAP EP
(nZDM) procedures for support availability:
SAP PI
packages of SAP EP and SAP PI 2013*)
Any system based „Near Zero Downtime Maintenance“ Planned
on SAP NetWeaver (nZDM) capabilities of EHP installation availability:
Technology with Software Update Manager (SUM) Q4 2012*)
*) Statement of direction – may be subject of change
14 © 2012 IBM Corporation
7

8. Business Continuity with SAP on IBM i
Software Update Manager (SUM): nZDM capabilities
Upgrade,
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Online delta replay XPRA, AIM
(trigger-based) execution part 2
15 *) Statement © 2012 IBM Corporation
of direction – may be subject of change
Business Continuity with SAP on IBM i
nZDM for EP: Mirror update with switchover (planned 2013)*)
Customer System Mirror System
Copied Customer System
Normal production
Normal production
No restrictions
No restrictions SP n
SP n
Clone productive system
Record changes
Record changes
Applications can run SP n
SP n SP n
SP n
Applications can run
in record mode or in
in record mode or in Standard update
Standard update
read only mode
read only mode record Apply SP on mirror
Apply SP on mirror
changes
system
system
Change
Recorder SP n+m
SP n+m
Transfer changes
Transfer changes
transfer Transfer recorded
Transfer recorded
changes changes and adapt
changes and adapt
System down to target SP level
to target SP level
System down
Switch to mirror
Switch to mirror
system, log off Switch to mirror system
system, log off Normal production
Normal production
users
users SP n+m
SP n+m Users log on to new
Users log on to new
Stop production
Stop production system
system
No restrictions
No restrictions
16 *) Statement © 2012 IBM Corporation
of direction – may be subject of change
8

9. Business Continuity with SAP on IBM i
nZDM for PI: Mirror update with back copy (planned 2013)*)
17 *) Statement © 2012 IBM Corporation
of direction – may be subject of change
Business Continuity with SAP on IBM i
SAP Downtime Minimization Services
Downtime
Host A
Original SAP
system
change recording
Final delta replay
Useful for major projects,
such as:
clone
• Upgrade
• Unicode conversion
Host B
• Client consolidation Host B
• Migration
Intermediate Target SAP
SAP system system
Upgrade/consolidation/conversion
Offered by SAP Consulting and SAP Active Global Support
18 © 2012 IBM Corporation
9

10. Business Continuity with SAP on IBM i
Thank you for your time today.
For more information:
IBM developerWorks – SAP on IBM i
http://www.ibm.com/developerworks/ibmi/sap
IBM Support and services: SAP on IBM i
http://www.ibm.com/systems/i/support/erp
SAP Community Network – SAP on IBM i
http://www.sdn.sap.com/irj/sdn/db4
SAP Community Network – High Availability
http://www.sdn.sap.com/irj/sdn/ha
SAP Note 1635602: Attachment “SAP High Availability on IBM i Configuration Guide”
SAP Note 568820: “IBM i: Implementing an Independent ASP (iASP) System”
Downtime Minimization Services from SAP:
http://www.service.sap.com/downtimeminimization
Contact:
Christian Bartels
+49-6227-7-45488
christian.bartels@de.ibm.com
19 © 2012 IBM Corporation
Business Continuity with SAP on IBM i
Trademarks and notes
IBM Corporation 2012
IBM, the IBM logo, ibm.com, DB2, DB2 Universal Database, System i, Power Systems, POWER7, PowerHA, BladeCenter,
DS6000, DS8000, Storwize, XIV and PureSystems are trademarks or registered trademarks of International Business
Machines Corporation in the United States, other countries, or both. If these and other IBM trademarked terms are marked
on their first occurrence in this information with the appropriate symbol (® or ™), these symbols indicate US registered or
common law trademarks owned by IBM at the time this information was published. Such trademarks may also be registered
or common law trademarks in other countries. A current list of IBM trademarks is available on the Web at “Copyright and
trademark information” at www.ibm.com/legal/copytrade.shtml.
SAP, R/3, SAP NetWeaver 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.
Other company, product and service names may be trademarks or service marks of others.
References in this publication to IBM products or services do not imply that IBM intends to make them available in all
countries in which IBM operates.
20 © 2012 IBM Corporation
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