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1. 1
Teradata Architecture

2. 2
Major Components of aTeradata System
AMPAMPAMP AMP
Parsing
Engine(s) (PEs)
BYNET
Disk Storage Disk Storage Disk Storage Disk Storage
Node

3. 3
The Parsing Engine
The Parsing Engine is responsible
for:
• Managing individual sessions
(up to 120 sessions per PE)
• Parsing and optimizing your SQL
requests
• Dispatching the optimized plan
to the AMPs
• EBCDIC/ASCII input conversion (if
necessary)
• Sending the answer set response
back to the requesting client
Session Control
Parser
SQL Request Answer Set Response
BYNET
Parsing
Engine
BYNET
AMP AMP AMPAMP
Dispatcher
Optimizer

4. 4
BYNET
BYNET
AMP AMP AMP AMP
SQL Request Answer Set Response
Parsing Engine
Dual redundant, fault-tolerant bi-directional interconnect network that enables:
• Automatic load balancing of message traffic.
• Automatic reconfiguration after fault detection.
• Scalable bandwidth as nodes are added.
The BYNET connects all the AMPs on the system:
Between nodes, the BYNET hardware carries broadcast and point-to-point communications.
On a node, BYNET software and PDE together control which AMPs receive a multicast
communication.

5. 5
The Access Module Processor (AMP)
Storing and retrieving rows to and
from disks.
Lock management.
Sorting rows and Aggregating
columns.
Join processing.
Output conversion and formatting.
Creating answer sets for clients.
Disk space management and
Accounting.
Special utility protocols.
Recovery processing.
AMPs are responsible for:
SQL Request Answer Set Response
AMPs perform
all tasks in parallel Teradata’s
“Shared-Nothing”
Architecture
BYNET
AMP AMP AMP AMP
Parsing Engine

6. 6
What is a Node ?
 Applications, the LAN gateway, and channel-driver software run as processes.
 AMPs and PEs are virtual processors (vprocs) which run under Parallel Database
Extensions (PDE).
 AMPs are associated with virtual disks (vdisks).
 A single node is a Symmetric Multi-Processor (SMP)
VdiskVdiskVdiskVdisk
Channel-
Attached
Systems
CHANNEL LAN
PC W/S
TERADATA
GATEWAY
PDE
CHANNEL DRIVER
UNIX
OR
WIN
2K
BYNET DRIVER
AMP
VPROC
AMP
VPROC
AMP
VPROC
AMP
VPROC
PE
VPROC
PE
VPROC
APPLICATION APPLICATION
OR UTILITY
Incorporates
Teradata’s
“Shared-Nothing”
Architecture

7. LearnTERADATA Online
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8. 8
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