Access Module Processor - Teradata Database

The AMP vproc manages Teradata Database interactions with the disk subsystem. Each AMP manages a share of the disk storage.

AMP functions include…	For example…
database management tasks	Accounting Journaling Locking tables, rows, and databases Output data conversion
	During query processing: Sorting Joining data rows Aggregation
file system management	disk space management.

Each AMP, as represented in the following figure, manages a portion of the physical disk space. Each AMP stores its portion of each database table within that space.