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Introduction to the Teradata® RDBMS for UNIX® Version 2 Release 2.1 - NCR

NCR Introduction to the Teradata® RDBMS for UNIX® Version 2 Release 2.1 - NCR, 1998. - 315 p.
Download (direct link): inntroduktionteradata1998.pdf
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7 The file system performs primitive physical data block operations by locating the data blocks to be manipulated and then passing control to the disk subsystem.

1-6

Introduction to the Teradata RDBMS for UNIX
Overview

Teradata Database Software

Stage Process
8 The disk subsystem retrieves the requested blocks for the file system.
9 The disk manager returns the requested blocks to the file system.
10 The file system returns the requested data to the database manager.
11 The database manager sends a message back to the dispatcher stating that the data is ready to be returned to the requesting user, then sorts and transmits the data to the interface engine over the BYNET.
12 The BYNET (or Vnet on a single node system) merges the sorted response and returns it to the requesting interface engine for packaging.
13 The dispatcher builds the response message and routes it to the communications channel driver for return to the requesting client system.
14 The TDP receives and unpacks the response messages and makes them available to CLI.
15 CLI passes the received data back to the requesting application in blocks.
16 The requesting application receives the response data in the form of a relational table.

Introduction to the Teradata RDBMS for UNIX

1-7
Overview

For More Information

For More Information

For more information on the topics presented in this chapter, see the following Teradata RDBMS manuals.

IF you want to learn more about . . . THEN see this manual . . .
Structured Query Language Teradata RDBMS for UNIX SQL Reference
Data flows through the Teradata RDBMS Teradata RDBMS for UNIX Database Design and Administration
General aspects of the Teradata RDBMS Teradata RDBMS for UNIX Database Design and Administration

1-8

Introduction to the Teradata RDBMS for UNIX
Teradata RDBMS Architecture

Chapter 2

Teradata RDBMS Architecture

Introduction to the Teradata RDBMS for UNIX
Teradata RDBMS Architecture

Introduction to the Teradata RDBMS for UNIX
Teradata RDBMS Architecture

About This Chapter

Introduction

Hardware

About This Chapter

The hardware that supports the Teradata software is based on off-the-shelf microprocessor technology combined with a proprietary communications network connecting the microprocessor elements.

The purpose of this chapter is to briefly mention and describe these hardware components and to describe the software architecture they support. Details are provided in the appropriate reference manuals.

This manual documents the basic hardware configurations for both the SMP and MPP hardware platforms.

Unlike earlier database server technology supporting the Teradata database management system, these machines do not have specialized hardware processors.

Instead, they run virtual processors called vprocs (virtual processors). These vprocs provide the parallel environment that enables the Teradata RDBMS to run on SMP and MPP systems.

Introduction to the Teradata RDBMS for UNIX

2-1
Teradata RDBMS Architecture

About This Chapter

The components of the SMP and MPP machines are:

Component Description Function
Node Basic hardware processing unit for the SMP and MPP machines. Symmetric multiprocessing (SMP) hardware unit with • Database software • Client interface software • UNIX operating system • Multiprocessor shared-memory processors • RAID disk arrays • Failsafe power provisions.

Connects processors by broadcast, multicast, or point-to-point communication, depending on the situation.

SMP and single-node MPP systems use a software emulation of the BYNET called Vnet.

BYNET

Interprocessor network to link nodes.

Note: single node configurations use the Vnet instead of the BYNET.

2-2

Introduction to the Teradata RDBMS for UNIX
Teradata RDBMS Architecture

About This Chapter

Base and range limits for the SMP systems are described in the System ConfIguration following table.

Note: Specifications are subject to change.

Component Minimum Maximum
SMP Nodes 1 1
Pentium CPU 4 16
Clock rate 90 MHz 166 MHz
EDAC Memory 256 megabytes 4 gigabytes
System disks 2 4
Data disk storage capacities • 160 gigabytes (RAID1) • 256 gigabytes (RAID5)
Serial (ESCON) and/or parallel (Bus & Tag) channel connection 1 64
LAN connections 1200 sessions
QIC streaming tape drive 525 megabytes
8 mm tape drive 10 gigabytes
CD-ROM drive 1
19-inch VGA monitor 1
Keyboard and mouse 1
Modem 1

Introduction to the Teradata RDBMS for UNIX

2-3
Teradata RDBMS Architecture

About This Chapter

System Component Minimum Maximum
5100S SMP Nodes 1 1
Pentium CPU 4 32
Clock rate 90 MHz 166 MHz
EDAC Memory 256 megabytes 4 gigabytes
System disks 2 4
Data disk storage capacities • 160 gigabytes (RAID1) • 256 gigabytes (RAID5)
Serial (ESCON) and/or parallel (Bus & Tag) channel connection 1 64
LAN connections 1200 sessions
QIC streaming tape drive 525 megabytes
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