TruCluster Production Server Software provides multihost access to shared disks, and a generic failover mechanism that makes applications and data highly available. TruCluster Production Server Software requires a PCI-based memory channel interconnect for fast and reliable communication between cluster members. By using multiple shared SCSI buses and redundant memory channel interconnects, a cluster with no single point of failure can be configured to achieve high availability. An administrator defines services for applications that are to remain highly available in the cluster. If a hardware or software failure prevents a system from running a service, the failover mechanism automatically relocates the service to a viable system in the cluster, which maintains the availability of applications or data.
Administrators can manually relocate services for load balancing or hardware maintenance.
TruCluster Production Server Software supports a variety of hardware configurations that are cost-effective, and meet performance needs and availability requirements. Hardware configurations can include different types of systems and storage units, and can be set up to allow easy maintenance of systems and storage. In addition, it is possible to set up hardware configurations that allow the addition of a system or storage unit without shutting down the cluster.