© 2013 IBM Corporation
ID506 High Availability and Disaster Recovery ideas for Social Business
Luis Guirigay | Consulting Client Technical ProfessionalIBM Collaboration Solutions | [email protected]@lguiriga
2 © 2013 IBM Corporation
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 legal obligation to deliver any material, code or functionality. Information about potential future 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.
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Agenda
Introduction
Key Concepts
IBM Notes and Domino
Database Servers
IBM WAS ND
IBM Connections
* IBM Sametime
* Mobile
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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
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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)
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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 Recovery
Downtime of Business Operations
Systems and Site redundancy● Data centers on different locations
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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
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IBM Lotus Notes/Domino and HADR
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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
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Deployment Idea #1: IBM Lotus Notes and Domino Mail Servers
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IBM DB2
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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
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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.
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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
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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
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Deployment Idea #2: IBM DB2 HADR
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Microsoft SQL Server
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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
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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
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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)
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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
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Deployment Idea #3: MS SQL Server (MS Cluster and Mirroring)
Hosted in ATL
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Understanding WebSphere Application server
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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)
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WebSphere Application Server – A graphical experience
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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
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IBM Connections and HADR
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Quick Test
Difference between Vertical Cluster and Horizontal Cluster ?
Which SQL HADR option is the recommended for IBM Connections?
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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….
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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
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Deployment Idea # 4: IBM Connections and HADR (Medium Deployment)
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IBM Sametime and HADR
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Deployment Idea # 5: IBM Sametime & HADR (Large Deployment)
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Mobile Solutions
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Deployment Idea # 6: IBM Traveler
Lot of sessions about Traveler
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Deployment Idea # 7: BES 5.x and HADR – A custom solution
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Thanks !Follow me: @lguiriga
about.me/lguiriga
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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/
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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 shall not be responsible for any damages arising out of the use of, or otherwise related to, this publication or any other materials. Nothing contained in this publication is intended to, nor shall have the effect of, creating any warranties or representations from IBM or its suppliers or licensors, or altering the terms and conditions of the applicable license agreement governing the use of IBM software.
References in this presentation to IBM products, programs, or services do not imply that they will be available in all countries in which IBM operates. Product release dates and/or capabilities referenced in 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.
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