The Multiplex Grid Option lets you add nodes to a multiplex environment, enabling a highly scalable shared disk grid technology that allows.
The Multiplex Grid Option lets you incrementally scale concurrent query jobs, load jobs, or both. With Sybase IQ multiplex, you can start with one server and add CPUs and memory as needed. You can add servers and CPUs with little or no loss in scalability, plus you can add terabytes of disk to the storage area network (SAN), independent of adding server hardware, with no significant performance degradation. Sybase IQ multiplex supports multiple users per CPU.
See Sybase IQ Multiplex Grid Option on the Sybase Web site.