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SAP FORUM İSTANBULDiscover SimpleAutomating SAP HANA System ReplicationSpeaker’s Name : Dirk OppenkowskiDepartment : SAP Alliance Director, SUSE
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Agenda
Introduction
SAP HANA System Replication Overview
SAP HANA HA/DR scenarios
Q & A
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Introduction
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SUSE Linux Enterprise + SAP HANA
SAP HANA was developed on SUSE
7,000+ SAP HANA customers on SUSE
SAP HANA Enterprise Cloud runs on SUSE
SAP IT runs SAP HANA on SUSE
17 out of 17 SAP HANA benchmarks on SUSE
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SUSE Linux: Technology Leadership
SAP uses SUSE Linux as development platform for UNIX/LINUX
Co-developed Netweaver 7.30 Cluster certification
#1 provider for SAP HANA Scale-up HA/DR
Currently in Ramp-up for SAP HANA Scale-out HA/DR
20,000+ SAP customers rely on SUSE Linux
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SAP HANA System Replication Overview
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SAP HANA Business Continutity
HW SAP
Business Continuity
HA per Datacenter
Disaster recovery between Datacenter
SAP HANA Host Auto Failover
(scale out with standby)
SAP HANA System Replication SAP HANA System Replication
SAP HANA Storage Replication
SAP
HW
SAP
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Automate SAP HANA System Replication
SAP HANA SystemReplication
“sr_takeover” is a Manual process
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Automate SAP HANA System Replication
SUSE High Availability Solution
Automates the“sr_takeover”
SAP HANA SystemReplication
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Automate SAP HANA System Replication
Service Level Agreement
improves
SAP HANA SystemReplication
SUSE High Availability Solution
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Reliable, Scalable and Secure Operating SystemSUSE Linux Enterprise Server
High AvailabilitySAP Netweaver & SAP HANA
Faster InstallationSAP Installation Wizard
Page Cache Management
AntivirusClamAV
Specific Update Channel
24x7 PRIORITY SUPPORT for SAP
24x7 PRIORITY SUPPORT for SAP
PRIO
RIT
Y SU
PPO
RT
for S
AP
PRIO
RIT
Y SU
PPO
RT
for S
AP
18 Month Grace PeriodLong-Term Service Pack Support
Simplify Linux for SAP WorkloadsSUSE Linux Enterprise Server for SAP Applications 11
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SAP HANA System ReplicationPowered by SUSE High Availability Solution
resource failover
active / active
node 1 node 2
N M
A B
N M
A B
HANADatabase
HANAmemory-preload
A B
SystemReplication
HANA PR1primary
HANA PR1secondary
Performance optimized Secondary system completely used for the preparation of a possible take-over Resources used for data pre-load on Secondary Take-overs and Performance Ramp shortened maximally
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From Concept to ImplementationSUSE High Availability Solution for SAP HANA
SAP HANAPrimary
SAP HANASecondary
vIP
SAPHana Master/Slave ResourceMaster Slave
SAPHanaTopology Clone ResourceClone Clone
suse01 suse02
Cluster Communication
Fencing
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SAP HANA HA/DR scenarios
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Allowed Scenarios
• Scale-Up performance-optimized - syncron (=>)A => B
• Scale-Up in a chain or multi tier - asyncron (->)A => B -> C
• Scale-Up in a cost-optimized scenario (+)A => B + Q
• Scale Up in a mixed scenario A => B -> C + Q
• Now all with multi tenancy (%) - here cost optimized%A => %B + %Q
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Performance-OptimizedSingle-tier System Replication and memory preload
Pacemaker
System Replication
node 1 node 2
SAP HANAPR1 primary
SAP HANAPR1 secondary
SystemPR1
vIP
SystemPR1
Performance optimized (A → B)
Secondary system completely used for the preparation of a possible take-over Resources used for data pre-load on SecondaryTake-over performance much faster than a cold start
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Cost-OptimizedSingle-tier System Replication and DEV / QAS
SystemPR1
SystemDEV
Cost optimized (A → B + Q)
Operating non-prod systems on SecondaryDuring take-over the non-prod operation has to be endedTake-over performance similar to cold start-upNeeds another disk stack for non-prod usage load
Pacemaker
System Replication
node 1 node 2
SAP HANAPR1 primary
SAP HANADEV / PR1 secondary
SystemPR1
vIP
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starting with version 0.149 Multi Tier System Replication – Cascading Systems
Datacenter Datacenter
asyncsync
Production Local standbywith data preload
Remote standby systemwith or without preload(mixed usage with non-prod.)
Available since SAP HANA SPS7
(Three cascading systems)
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Multi-tier System ReplicationChain Topology ( A → B → C )
asyncsync
ClusterP S
A B C
Default Setup - Chain
Cluster
async
P
A B C
only async now
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Multi-tier System ReplicationChain Topology ( A → B → C )
asyncsync
ClusterPS
A B C
asyncsync
ClusterP S
A B C
Default Setup - Chain
Cluster
async
P
A B C
only async now
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Multi-tier System ReplicationChain Topology ( A → B → C )
asyncsync
ClusterPS
A B C
asyncsync
ClusterP S
A B C
Default Setup - Chain
Cluster
async
P
A B C
only async now
Not allowed from SAP This would be a star
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async
ClusterP
A B C
Only async
Multi-tier System ReplicationChain Topology ( A → B → C )
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async
ClusterP
A B C
ADMIN:Break Replication complete
async
ClusterP
A B C
Only async
Multi-tier System ReplicationChain Topology ( A → B → C )
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asyncsync
PS
A B
C Again a chain
async
ClusterP
A B C
ADMIN:Break Replication complete
async
ClusterP
A B C
Only async
starting with version 0.149 Multi-tier System ReplicationChain Topology ( A → B → C )
ADMIN:Create new SystemReplication
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SUSE SAPHanaSR in 3 Facts
Reduces complexity- provides a wizard for easy configuration with just SID, instance number and IP address- automates the sr-takeover and IP failover ("bind")
Reduces risk- includes always a consistent picture of the SAP HANA topology- provides a choice for automatic registrations and site takeover preference
Increases reliability- provides short takeover times in special for table preload scenarios- includes the monitoring of the system replication status to increase data consistency
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Outlook: HANA in a SUSE Linux Enterprise High Availability Extension ClusterHANA Multi Node – System Replication / Scale-OUT
SUSE is still scoping and researching this cluster concept.
site 1 site 2
N M
A B
N M
A B
HANADatabase
HANAmemory-preloadA B
SystemReplication
HANA PR1primary
HANA PR1syncmem
resource failover active / active
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Q & A
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Thank youContact information:
Dirk OppenkowskiSAP Alliance [email protected]+49 173 5876 826
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