Reliant® HA Release 1.1.4

ReliantHA is a clustering solution for enterprises requiring high levels of application and data availability. Businesses today are increasingly dependent on large servers to support their information processing needs, and any interruption in these services can be enormously expensive. ReliantHA increases the overall availability of applications and critical data by connecting multiple servers together as nodes within a single high-availability fail-over cluster. Applications do not need to be aware of the operation of the cluster, and all nodes within the cluster may be used simultaneously for processing.

ReliantHA extends the high performance, Reliability, Availability and Scalability (RAS) characteristics of the UnixWare server operating system editions to provide continuous monitoring and fault detection of applications, resources, and entire nodes. In the event of a failure, automated recovery scripts are initiated to enable rapid or transparent restoration of services, depending on the application. Recovery actions include the unattended restart of resources, switching to alternative data paths, or migrating services to other systems within the cluster. Once a failed node has been replaced or repaired it may be returned to service in the active cluster. A graphical Configuration Manager provides a single point of control for the entire cluster.

Special Bundle for ReliantHA

ReliantHA can take advantage of new features in UnixWare 7.1.4, such as the ability to to utilize large software RAID volumes spanning multiple disks created using ODM, and to support fault tolerant high performance Multi-Path I/O capable devices for data storage.

Single Server Licenses for ReliantHA are available add Clustering to UnixWare 7 servers that are already deployed. For new deployments, a special 2 node clustering bundle is available that includes two (2) UnixWare 7.1.4 Business Edition operating system licenses with two (2) ReliantHA single server licenses at a lower price than if the 4 licenses were licensed separately. In addition, the 2 node bundle is available with or without SCO Update Service

What’s New In Release 1.1.4?

Release 1.1.4 has been enhanced with better GAB halt diagnostics and enabled for single heartbeat system startup for customers who need to start up a system before a cluster is established. This upgraded version is designed for both new installations and updating version 1.1.1 through 1.1.3 of ReliantHA.

• Supports 2-to-4 node loosely coupled clusters
• Graphical Installation and Management 
• Local and remote administration capabilities
• Included in the UnixWare 7.1.4 Optional Services enhancement products (part of the UnixWare 7 Media Kit)
• Continuous monitoring and rapid detection of hardware, resource, application and full system failures 

• Reliable, redundant private network paths between systems using Ethernet or serial connections
• Shared data bus provides alternative path to stored data in the event of a node failure
• Customizable detectors and recovery scripts written in C, C++, or shell scripting languages 

• Transparent to all UnixWare 7 applications 
• Predefined scripts for SCOoffice Mail Server, NFS, and databases
• Supports shared NFS configurations 
• Comprehensive scripting capabilities for describing application start up, recovery behaviour and dependent resources

Features  

• High-availability clusters of 2-to-4 nodes, with all nodes simultaneously active 
• Automated fault detection and recovery 
• Supports standard Intel-compatible enterprise servers with off-the-shelf RAID and networking solutions 
• Includes tools to create custom fail-over configurations with sample detectors and scripts 
• Graphical installation and management 
• Runs on UnixWare 7.1.4, UnixWare 7.1.3, UnixWare 7.1.2 (OU8)
• Supports fail-over of both UNIX, OpenServer and Windows applications running on UnixWare

Benefits  

• High availability and workload balancing using heterogeneous UP and SMP servers 
• Fast recovery of data services to client systems without operator intervention
• Wide choice of affordable, high performance components  
• Fine-grained controls permit tailoring to your specific needs  
• Single point of control simplifies cluster administration
• Enterprise class performance and scalability with access to thousands of applications 

Note: some features of ReliantHA require specific functionality of the servers, SCSI Host Bus Adapters (HBAs), Ethernet Network Interface Cards (NICs), or shared storage devices.

UnixWare, used under an exclusive license, and UNIX are registered trademarks of The Open Group in the United States and other countries.