Teradata Database File System

• Teradata Database file system is a layer of software between Teradata Database layer and the PDE layer.
• Teradata Database file system service calls allow Teradata Database to store and retrieve data efficiently and with integrity without being concerned about the specific low level operating system interfaces.
• The data block is a disk-resident structure that contains one or more rows from the same table and is the smallest physical I/O unit for Teradata Database file system.
• Data blocks are stored in physical disk space units called sectors which are logically grouped together in cylinders.