1. ID506 High Availability and Disaster
Recovery ideas for Social Business
Luis Guirigay | Consulting Client Technical Professional
IBM Collaboration Solutions | IBM
luis_guirigay@us.ibm.com
@lguiriga
© 2013 IBM Corporation

2. Please note:
IBM’s statements regarding its plans, directions, and intent are subject to change or withdrawal
without notice at IBM’s sole discretion.
Information regarding potential future products is intended to outline our general product direction
and it should not be relied on in making a purchasing decision.
The information mentioned regarding potential future products is not a commitment, promise, or
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products may not be incorporated into any contract. The development, release, and timing of any
future features or functionality described for our products remains at our sole discretion.
Performance is based on measurements and projections using standard IBM benchmarks in a
controlled environment. The actual throughput or performance that any user will experience will
vary depending upon many factors, including considerations such as the amount of
multiprogramming in the user's job stream, the I/O configuration, the storage configuration, and the
workload processed. Therefore, no assurance can be given that an individual user will achieve
results similar to those stated here.
2 © 2013 IBM Corporation

3. Agenda
 Introduction
 Key Concepts
 IBM Notes and Domino
 Database Servers
 IBM WAS ND
 IBM Connections
 * IBM Sametime
 * Mobile
3 © 2013 IBM Corporation

4. Introduction
 IT Architect with 14+ years working with IBM technologies , Public Speaker, IBM
Certification Subject Matter Expert and IBM Certified Instructor
 Health Checks, Support, Performance Tuning, Security, Upgrades, Deployments,
Development, HADR
 Published Author for developerWorks & Co-Author of the following IBM Redbooks
● Implementing IBM Lotus Domino 7 for i5/OS
● Preparing for and Tuning the SQL Query Engine on DB2 for i5/OS
● Deploying IBM Workplace Collaboration Services on the IBM System i5 Platform
 IBM Certified Developer
● IBM Lotus Notes/Domino 5, 6, 7, 8, 8.5 and Lotus Workflow 3
 IBM Certified Administrator
● IBM Lotus Quickr 8.5
● IBM Connections 2, 2.5, 3.x, 4
● IBM Sametime 7.5, 8 and 8.5
● IBM WebSphere Portal 6.0, 6.1, 7.0 and 8
● IBM Lotus Notes/Domino 5, 6, 7, 8 and 8.5
4 © 2013 IBM Corporation

5. Key Concepts
 Load Balancing
● “…is a computer networking methodology to distribute workload across multiple computers or a
computer cluster….or other resources, to achieve optimal resource utilization, maximize
throughput, minimize response time, and avoid overload”
 High Availability
● “…ability to continue processing and functioning for a certain period of time - normally a very
high percentage of time, for example 99.999%. …. Similarly, clustering and coupling
applications between two or more systems can provide a highly available computing
environment.”
 Disaster Recovery ? *****
● “…is an IT-focused plan/architecture designed to restore operability of the target systems,
applications, or computer facility at an alternate site after an emergency”
Sources:
http://www.redbooks.ibm.com/abstracts/tips0047.html
http://en.wikipedia.org/wiki/Load_balancing_(computing)
5 © 2013 IBM Corporation

6. Plan for the Best, Prepare for the Worst !
Business Issue Solution
Data Recovery Data Loss Data Redundancy
● Replicas
● Backups
Load Balancing Performance Resources Redundancy
● Clusters
● Server Farms
High Availability Service Downtime Systems Redundancy
● Clusters
● Server Farms
Disaster Downtime of Business Systems and Site redundancy
Recovery Operations ● Data centers on different locations
6 © 2013 IBM Corporation

7. Multi-layer architecture
 Presentation layer
● HTTP Servers, Caching Proxy
 Logic layer
● Application Server
 Data layer
● Database server
IBM Technote – Knowledge Connection for HTTP Server and WAS Plugin
http://www-01.ibm.com/support/docview.wss?uid=swg27021301
7 © 2013 IBM Corporation

8. IBM Lotus Notes/Domino and HADR
8 © 2013 IBM Corporation

9. IBM Lotus Notes and Domino (just a few tips)
 In the Domino world it’s all about Clustering and Local/Managed Replicas
● Using Clusters and Local/Managed Replicas is the ultimate 24/7
● Run Cluster Analysis on a regular basis
● Health Checks
 Control Load Balancing using Server_Availability_Threshold=xx
 Use a Private LAN for Cluster Replication
 Enable multiple Cluster_Replicators=xx
 DEBUG_EXCLUSIVE_REPLICATION=1
● One DB at the time
● Not good for HUB servers
9 © 2013 IBM Corporation

10. Deployment Idea #1: IBM Lotus Notes and Domino Mail Servers
10 © 2013 IBM Corporation

11. IBM DB2
11 © 2013 IBM Corporation

12. IBM DB2 – High Availability Disaster Recovery
 Data is synchronized via Log Shipping
 Clients are rerouted using “Automatic Client Reroute”
 Synchronization modes
● SYNC (synchronous)
● NEARSYNC (near synchronous)
● ASYNC (asynchronous)
● SUPERASYNC (super asynchronous)
 http://pic.dhe.ibm.com/infocenter/db2luw/v10r1/topic/com.ibm.db2.luw.admin.ha.doc/doc/c0011724.html
12 © 2013 IBM Corporation

13. IBM DB2 Log Shipping and Mirroring
 Log Mirroring
● It provides Data Redundancy
● Data is duplicated
● Please use a different disk controller
 Log Shipping
● It provides High Availability
● If primary fails:
– The remaining logs are transferred over to the standby machine.
– The standby database rolls forward to the end of the logs and stops.
– The clients reconnect to the standby database and resume operations.
13 © 2013 IBM Corporation

14. IBM DB2 High Availability Feature
 Enables integration between IBM® DB2 server and cluster managing software
 It provides infrastructure for enabling the database manager to communicate
with your cluster manager when instance configuration changes, such as
stopping a database manager instance, require cluster changes
 Supported clustering tools
● IBM® PowerHA® SystemMirror for AIX®
● Tivoli® System Automation for Linux
● Microsoft Cluster Server, for Windows operating systems
● Sun Cluster, or VERITAS Cluster Server, for the Solaris operating system
● Multi-Computer/ServiceGuard, for Hewlett-Packard
14 © 2013 IBM Corporation

15. IBM DB2: Other HADR Options
 DB2 Fault Monitor
● UNIX based OS only (Linux, AIX)
● It will restart the DB2 instance if it ends unexpectedly
● Not compatible with high availability clustering products such as IBM PowerHA® SystemMirror
for AIX® or IBM Tivoli® System Automation for Multiplatforms (SA MP)
 Automatic Client Reroute
● It will establish a connection with
an alternate DB2 instance
● Configured via Code or WAS ISC
15 © 2013 IBM Corporation

16. Deployment Idea #2: IBM DB2 HADR
16 © 2013 IBM Corporation

17. Microsoft SQL Server
17 © 2013 IBM Corporation

18. MS SQL Server - Failover clustering
 Based on Windows Server failover clusters
 Provides High Availability at the Database Server Instance level
 Appears on the network as a single SQL Server instance on a single computer
 SQL Server Cluster will listen on virtual IP address for the cluster (not the
individual machines)
 All nodes are connected to a shared storage for SQL data
18 © 2013 IBM Corporation

19. MS SQL Server - Mirroring
 Configured at the Database level
 1:1 Failover
 3 Modes of operation:
● High-safety
– Transaction is committed to mirrored server, then to the
principal
● High-performance mode
– Primary server doesn't wait for transaction to be committed to mirrored server
● High-safety mode with automatic failover
– Requires a 3rd server. The Witness server
– Failover is performed only if Witness and Mirrored
server remain connected to each other
19 © 2013 IBM Corporation

20. MS SQL Server: Log Shipping
 Configured at the Database level
 1:N Failover
 Supports limited read-only access to secondary databases (during the interval
between restore jobs)
 Related Jobs:
● Backup
● Copy
● Restore
● Alert (With Optional Monitor Server)
20 © 2013 IBM Corporation

21. MS SQL Server - Replication
 Configured at the Database level
 1:N Failover
 Replication types
● Snapshot replication
● Transactional replication
● Merge replication
 Replication models
● Peer-to-peer
● Central publisher
● Central publisher with remote distributor
● Central subscriber
● Publishing subscriber
http://msdn.microsoft.com/en-us/library/ms152531(v=sql.105).aspx
http://msdn.microsoft.com/en-us/library/ms152567(v=sql.105).aspx
21 © 2013 IBM Corporation

22. Deployment Idea #3: MS SQL Server (MS Cluster and Mirroring)
Hosted in ATL
22 © 2013 IBM Corporation

23. Understanding WebSphere Application server
23 © 2013 IBM Corporation

24. WebSphere Application Server 101
 Deployment Manager: a server that manages operations for a logical group or
cell of other servers
 Cell: A group of managed processes that are federated to the same deployment
manager and can include high-availability core groups
 Node Agent: an administrative agent that manages all application servers on a
node and represents the node in the management cell
 Node: a logical grouping of managed servers
 Profile: an instance of a WebSphere Application Server configuration
Remember…Multiple Nodes in a Cell don't necessarily represent High
Availability (Eg: Sametime 8.5)
24 © 2013 IBM Corporation

25. WebSphere Application Server – A graphical experience
25 © 2013 IBM Corporation

26. WebSphere Clustering
Vertical Clustering: Multiple clustered application servers running
inside the same node.
 Local Redundancy
 Maximize system resources utilization (powerful machines)
 Not supported by IBM Connections 4
Horizontal Clustering: Multiple clustered applications running a
different nodes.
 Workload Balancing
 High Availability
26 © 2013 IBM Corporation

27. IBM Connections and HADR
27 © 2013 IBM Corporation

28. Quick Test
Difference between Vertical Cluster and Horizontal Cluster ?
Which SQL HADR option is the recommended for IBM
Connections?
28 © 2013 IBM Corporation

29. IBM Connections and HADR
 You can install Connections as:
● Small Deployment
● Medium Deployment
● Large Deployment
 It supports:
● DB2
● MS SQL
● Oracle (For this one talk to your DBA)
Now that your understand DB HADR and WebSphere Clustering
solutions it should be pretty easy to architect and deploy….
29 © 2013 IBM Corporation

30. Creating an IBM Connections Cluster
 It is already created during installation with 1 node
Then...
 Install WAS Network Deployment – Application Server Only
 Copy JDBC files to Secondary node (same path as Primary Node)
 Shared content folders are available from secondary node
 Add Secondary Node to the Deployment Manager
● AddNode.sh/bat
 Via ISC (aka WAS Web Console) - Create new cluster member and select
secondary node
 Via ISC - Add Ports and FQHN/IP to new server
 Via ISC - Sync Nodes
 Enable IBM HTTP Server to connect to secondary node
30 © 2013 IBM Corporation

31. Deployment Idea # 4: IBM Connections and HADR (Medium Deployment)
31 © 2013 IBM Corporation

32. IBM Sametime and HADR
32 © 2013 IBM Corporation

33. Deployment Idea # 5: IBM Sametime & HADR (Large Deployment)
33 © 2013 IBM Corporation

34. Mobile Solutions
34 © 2013 IBM Corporation

35. Deployment Idea # 6: IBM Traveler
 Lot of sessions about Traveler
35 © 2013 IBM Corporation

36. Deployment Idea # 7: BES 5.x and HADR – A custom solution
36 © 2013 IBM Corporation

37. Thanks !
Follow me: @lguiriga
about.me/lguiriga
37 © 2013 IBM Corporation

38. References
 WebSphere Application Server V7: Concepts, Planning and Design
https://www.redbooks.ibm.com/Redbooks.nsf/RedbookAbstracts/sg247708.html
 Understanding HTTP plug-in failover in a clustered environment
http://www-01.ibm.com/support/docview.wss?uid=swg21219808
 High Availability and Disaster Recovery Options for DB2 on Linux, UNIX, and Windows
http://www.redbooks.ibm.com/abstracts/sg247363.html
 Setting up a remote client to manage an established DB2 UDB HADR database pair from DB2 Control Center
http://www-01.ibm.com/support/docview.wss?uid=swg21249422
 DB2 HADR Best Practices
http://www.ibm.com/developerworks/data/bestpractices/hadr/
 Licensing distributed DB2 9.7 servers in a high availability (HA) environment
http://www.ibm.com/developerworks/data/library/techarticle/dm-0909db2halicensing/
38 © 2013 IBM Corporation

39. Legal disclaimer
© IBM Corporation 2013. All Rights Reserved.
The information contained in this publication is provided for informational purposes only. While efforts were made to verify the completeness and accuracy of the information contained in this publication, it
is provided AS IS without warranty of any kind, express or implied. In addition, this information is based on IBM’s current product plans and strategy, which are subject to change by IBM without notice. IBM
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this presentation may change at any time at IBM’s sole discretion based on market opportunities or other factors, and are not intended to be a commitment to future product or feature availability in any
way. Nothing contained in these materials is intended to, nor shall have the effect of, stating or implying that any activities undertaken by you will result in any specific sales, revenue growth or other
results.
Performance is based on measurements and projections using standard IBM benchmarks in a controlled environment. The actual throughput or performance that any user will experience will vary
depending upon many factors, including considerations such as the amount of multiprogramming in the user's job stream, the I/O configuration, the storage configuration, and the workload processed.
Therefore, no assurance can be given that an individual user will achieve results similar to those stated here.
All customer examples described are presented as illustrations of how those customers have used IBM products and the results they may have achieved. Actual environmental costs and performance
characteristics may vary by customer.
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