Scaling Lotus Expeditor Server servicesAdded by IBM on October 4, 2010 | Version 1 (Original)
|Lotus® Expeditor Server supports extending services across multiple physical systems and horizontal clustering of WebSphere® applications.
Lotus® Expeditor Server supports extending services across multiple physical systems and horizontal clustering of WebSphere® applications.
Extend services across multiple physical systems
This task is accomplished by supporting WebSphere Application Server workload management. The application servers are defined in a horizontal cluster to provide workload distribution. Workload can be spread over the application server instances to provide more capacity. The installation program provides a method to quickly install and configure additional systems with minimal user input and manual intervention.High availability support
In a clustered environment, update sites for software to deliver to the client should be placed on a separate Web server than the Web server used to access the client management services.
Note: URLs for these software distribution tasks reference the Web server host name and not the Expeditor Server host name.
MQ Everyplace® is not a WebSphere Application Server application and, therefore, is not clustered. However, instances of WebSphere MQ Everyplace are installed on each server. Messaging can be administratively load-balanced by configuring the clients to connect to a particular Expeditor Server.
WebSphere Application Server clustering also provides high availability for application servers. Multiple instances of an application server (members) are available in a cluster. When one member fails, WebSphere workload management stops sending requests to the failed member and routes them to the remaining active members. Since the two Lotus Expeditor application servers (DB2® Everyplace Synchronization Server and Client Management services) can be clustered, WebSphere workload management provides failover support. This enables a high availability environment. Expeditor Server relies on several services, each of which can become a single point of failure.
You should enable each of these services for high availability:
- LDAP server used to store Lotus Expeditor users and groups
- Database server where the Lotus Expeditor databases are stored
- Load balancer product to distribute workload across Web servers
- File system: Use of a shared, highly available disk storage system, such as RAID (Redundant Array of Independent Disks)
- Load balancers (optional) used to distribute workload across the Web servers that are hosting the client application software updates.
: For more information about high availability options, consult the product documentation shipped with your LDAP server, database server, Web server, disk storage system, or load-balancing product.
Parent topic: Key features: XPD621