Hitachi 9900 Series, 9960 manual Hitachi Data Systems, Parallel Database Clustering

Hitachi Data Systems

Figure 22 - Hitachi Dynamic Link Manager™ automatically provides path failover and load balancing for open systems.

Clustering middleware supports distributed lock management.

4.Parallel Database Clustering

This type of middleware is a special version of host failover middleware, which supports major parallel database servers like Oracle® Parallel Server, Informix® XPS, and Sybase® MPP. Clustering middleware supports distributed lock management, a feature that enables parallel database software running on separate cluster nodes to share access to the same database. If one host fails, the other hosts can take over its work. Database clusters allow a customer to grow a database incrementally simply by adding additional nodes. With non-parallel database servers, the server has to be replaced or an additional server with another database instance has to be purchased and installed when the capacity of the original system is exceeded.

The Lightning 9900™ system has been certified with MC/Lock Manager for Oracle® Parallel Server and Sun™ PDB for Oracle® Parallel Server.

Standard Hot-swap and Redundant Power Supplies

The Lightning 9900™ Series provides fully redundant power supplies to ensure uninterrupted power and cooling to all chassis in the system – supporting full system power in the event of a power supply failure. In the event of such a failure, the power supply that has failed can be “hot swapped” without disruption to the power subsystem.

28