Symmetric multiprocessing (SMP) - A single node that contains multiple CPUs sharing a memory pool.
Massively parallel processing (MPP) - Multiple SMP nodes working together comprise a larger configuration. The nodes are connected using the BYNET, which allows multiple virtual processors on multiple system nodes to communicate with each other.
Shared Nothing Architecture - means that each vproc(Access Module Processors and Parsing Engines are Virtual processors) is responsible for its own portion of the database and do not share common components.each AMP manages its own dedicated memory space and the data on its own vdisk -- these are not shared with other AMPs. Each AMP uses system resources independently of the other AMPs so they can all work in parallel for high system performance overall
A node is made up of various hardware and softwares
A clique is a set of Teradata nodes that share a common set of disk arrays. Cabling a subset of nodes to the same disk arrays creates a clique.
A disk array is a configuration of disk drives that utilizes specialized controllers to manage and distribute data and parity acroos the disks while providing fast access and data integrity
RAID 5 Data and parity protection striped across multiple disks
RAID 1 Each disk has a physical mirror replicating the data