Compaq 307560-001 - ProLiant - 2500R Manual de usuario

TECHNOLOGYBRIEF

201A/1196

November 4, 1996

Compaq Computer

Corporation

CONTENTS

Introduction

.....................

Technology

Overview

.........................

Form Factor/Chassis

.............

Security

................................

Processors

...........................

Memory

................................

I/O

................................

.....

Storage

.............................

Power

................................

System Architecture

.......

Price:Performance

.........

System

Manageability

................

Conclusion

....................

Compaq ProLiant 2500 Server Technology

EXECUTIVE SUMMARY

With the decentralization of corporations and corporate computing, departmental and remote

office servers must provide a range of features that have been unavailable in traditional

departmental and remote office servers. Recognizing the changing business dynamics, Compaq

has developed a new business-critical departmental and remote office server that combines the

latest processor, network, and storage technology in a flexible new chassis. The Compaq

ProLiant 2500 Server delivers a robust set of performance, management, and availability features

at a very affordable price.

This brief describes the performance, management, and availability technologies as well as the

system architecture that make the ProLiant 2500 an ideal departmental and remote office server.

Please direct comments regarding this communication via internal bmail to this address: Tech Com@HW Tech@Sys Hou.

Compaq field personnel may also send comments via the internet to this address: [email protected]

TECHNOLOGY BRIEF (cont.)

201A/1196

NOTICE

The information in this publication is subject to change without notice.

COMPAQ COMPUTER CORPORATION SHALL NOT BE LIABLE FOR TECHNICAL

OR EDITORIAL ERRORS OR OMISSIONS CONTAINED HEREIN, NOR FOR

INCIDENTAL OR CONSEQUENTIAL DAMAGES RESULTING FROM THE

FURNISHING, PERFORMANCE, OR USE OF THIS MATERIAL. THIS

INFORMATION IS PROVIDED “AS IS.” COMPAQ MAKES NO REPRESENTATION

OR WARRANTIES OF ANY KIND, WHETHER EXPRESS, IMPLIED, OR

STATUTORY, AND EXPRESSLY DISCLAIMS THE IMPLIED WARRANTIES OF

MERCHANTABILITY, FITNESS FOR PARTICULAR PURPOSE, GOOD TITLE AND

NONINFRINGEMENT.

This publication does not constitute an endorsement of the product or products that were tested.

The configuration or configurations tested or described may or may not be the only available

solution. This test is not a determination of product quality or correctness, nor does it ensure

compliance with any federal, state or local requirements. Compaq does not warrant products

other than its own strictly as stated in Compaq product warranties.

Compaq, Contura, Deskpro, Fastart, Compaq Insight Manager, LTE, PageMarq, Systempro,

Systempro/LT, ProLiant, TwinTray, ROMPaq, LicensePaq, QVision, SLT, ProLinea, SmartStart,

NetFlex, DirectPlus, QuickFind, RemotePaq, BackPaq, TechPaq, SpeedPaq, QuickBack, PaqFax,

Presario, SilentCool, CompaqCare (design), Aero, SmartStation, MiniStation, and PaqRap,

registered United States Patent and Trademark Office.

Netelligent, Smart Uplink, Extended Repeater Architecture, Scalable Clock Architecture, Armada,

Cruiser, Concerto, QuickChoice, ProSignia, Systempro/XL, Net1, LTE Elite, Vocalyst, PageMate,

SoftPaq, FirstPaq, SolutionPaq, EasyPoint, EZ Help, MaxLight, MultiLock, QuickBlank,

QuickLock, UltraView, Innovate logo, Wonder Tools logo in black/white and color, and Compaq

PC Card Solution logo are trademarks and/or service marks of Compaq Computer Corporation.

Other product names mentioned herein may be trademarks and/or registered trademarks of their

respective companies.

Microsoft, Windows, Windows NT, Windows NT Advanced Server, SQL Server for Windows

NT are trademarks and/or registered trademarks of Microsoft Corporation.

Compaq ProLiant 2500 Server Technology

First Edition (November 1996)

Document Number 201A/1196

TECHNOLOGY BRIEF (cont.)

201A/1196

INTRODUCTION

Many current departmental servers and remote office servers do not provide the range of features

required to meet today’s changing business dynamics:

• Network operating systems are becoming more robust, with more and more network services

now integrated into the core operating system.

• Business-critical systems such as email and decision support systems are being pushed out

into the departments and remote offices.

• Departmental servers are hosting local data linked to the enterprise. As a result, the range of

capabilities required in a departmental or remote office platform have become more complex

and require a more robust platform.

• MIS wants to gain control over departmental systems; however, their systems have not been

robust enough to support effective management capabilities.

• Departments have become interdependent. Because so many more users will be affected if a

sever goes down, availability requirements are increasing.

• Departmental and remote office locations frequently do not have qualified service and

technical engineers on site to maintain and upgrade systems. With availability requirements

growing, it becomes increasingly important that departmental and remote office servers be

designed for easy service and upgrading.

Compaq recognizes these changes and realizes that customers need a server platform that answers

the varying computing needs of specific departments and remote offices—a platform that delivers

a range of performance, management, availability, and serviceability features at an affordable

price.

In answer to that need, Compaq has developed a new departmental and remote office server, the

Compaq ProLiant 2500 Server, which supports the following network operating systems:

• Microsoft Windows NT 3.5x and 4.x

• Netware 3.12 and 4.x

• IBM OS/2 2.x and 3.x

• SCO UNIX 5.0

• Banyan Vines 6.x

• UnixWare 2.1x

This brief explains the technology integrated with the ProLiant 2500 that makes it an ideal

departmental or remote office server.

TECHNOLOGY BRIEF (cont.)

201A/1196

TECHNOLOGY OVERVIEW

Compaq designed the new ProLiant 2500 specifically to meet customers’ needs for a departmental

or remote office server: a robust server offering high performance, availability, serviceability,

manageability, and investment protection—all at an affordable price. To meet all those needs,

Compaq developed a new server with a highly flexible chassis that is optimized for both tower

and rack configurations (Figure 1) and a new architecture for combining the latest processor,

network, and storage technology.

This section describes individual hardware features and technologies of the ProLiant 2500 server.

Figure 1. The Compaq ProLiant 2500 Server converts readily from a tower configuration (left) to a rack

configuration (right) and back again.

Form Factor/Chassis

The ProLiant 2500 was designed using a compact, yet flexible form factor for both tower and rack

configurations. This highly serviceable form factor reduces the down time associated with field

upgrades and component replacement. The intent of this design is to save customers money in

multiple ways:

• By standardizing on the ProLiant 2500 for departmental and remote office servers, customers

can deploy and redeploy individual servers as their needs change. The ability to reconfigure

a ProLiant 2500 server quickly and easily from a tower to a rack and back to a tower

enclosure provides for end-of-life redeployment and protection of the hardware investment.

• The 5U chassis allows customers to stack up to eight ProLiant 2500 servers in a single 42U

Compaq rack cabinet. The increased server density saves customers both space and money.

• By providing easy access to server components, the ProLiant 2500 design reduces the down

time associated with upgrades and field replacement, reduces the required skill level for

performing routine maintenance, and therefore reduces the cost of maintenance.

TECHNOLOGY BRIEF (cont.)

201A/1196

• Standardizing on the ProLiant 2500 can reduce the overhead of maintaining an inventory of

spare parts.

The flexible new ProLiant 2500 chassis was designed for maximum serviceability and provides

front, rear, top, and side access for service or upgrade tasks (Figure 2). Most major chassis

elements can be removed without the use of tools. Both the processor board and the I/O board are

rail-mounted in lever-actuated quick release modules designed to be drawn into the chassis by a

cam action lever system (Figure 3).

Figure 2. The ProLiant 2500 Server provides front, top, side, and rear access for service or upgrade tasks.

Most major chassis elements can be removed without the use of tools.

Figure 3. Rear view of the ProLiant 2500 Server chassis showing lever-actuated quick release modules.

I/O Module

System Fan

Outlet

Processor Module

System Fan Module

Quick release knob for

System Fan Module

Quick release for I/O

Module

Quick Release for

Processor Module

Power Supply

TECHNOLOGY BRIEF (cont.)

201A/1196

Adding or replacing a processor in the ProLiant 2500 simply requires opening the quick release

lever, sliding out the processor board, sliding in a new processor board, and closing the quick

release lever. Since main memory in the ProLiant 2500 is mounted on the processor board,

adding or changing out main memory is equally simple. The slide-out processor module provides

ready access to memory slots. A used DIMM (dual in-line memory module) pulls readily from its

slot; and with a slight push, a new pluggable DIMM seats securely in its place.

Access to the I/O board for servicing PCI and EISA cards is also quick and tool-less. In the

ProLiant 2500 tower model, access to the cards is from the top. In the rack model, access is from

the side to provide equal visibility. The I/O cards slide smoothly into the expansion slots on the

I/O board. A Compaq-designed rotating latch locks each card securely into place in the option

card bay and also serves as a quick release for easy removal and replacement of cards (Figure 4).

Figure 4. In a ProLiant 2500 tower model, PCI and EISA cards slide into the I/O slots from the top (left). A

unique rotating latch secures each card (right).

A single quick-release knob provides easy access to the system fan, which is mounted

perpendicular to the back panel and exhausts through an outlet below the fan assembly itself (see

Figure 3). The power supply is mounted with four screws that can be easily removed.

With its compact 5U chassis, the ProLiant 2500 provides for improved server density in rack

environments. Customers can stack up to eight ProLiant 2500 servers in a single 42U Compaq

rack cabinet. By comparison, the 7U chassis of the ProLiant 1500 Server permits stacking six

servers in a 42U rack cabinet. With the improved density, installation of the ProLiant 2500

becomes a one- or two-man task as opposed to a two- or three-man task; thus, the increased

density saves customers both space and maintenance costs.

Security

While high serviceability requires easy access to server components, security of data and

equipment is paramount. The ProLiant 2500 housing and chassis design achieves both.

In a rack configuration, access to the system is controlled by two key locks: one on the front door

and a second on the rear door of the rack cabinet. In the tower model, a single key lock on the

front bezel controls access to the system. The top, side, and back panels of the housing slide onto

the chassis and interlock. The hinged front bezel closes over the edges of the top and side panel,

securing them. A simple half turn of the key lock opens or locks the front bezel for the first line

of defense against unauthorized access to the hard drives and other components (Figure 5).

The ProLiant 2500 also provides an optional, second level of security for rear-mounted

components. The ProLiant 2500 comes equipped with three set screws (Figure 6) that can be used

to lock the processor module, the I/O module, and the fan in place. By simply moving these

screws from their initial position and placing them in the three holes shown in Figure 6, the

customer can secure the rear-access modules against quick release and removal.

CZR-052.eps

CZR-037a.eps

TECHNOLOGY BRIEF (cont.)

201A/1196

The ProLiant 2500 tower model also includes a Compaq-designed security system for the server

power switch. The power switch is mounted on the chassis, behind the front bezel. When the

front bezel is locked into place, the power switch is accessible by means of small, sliding cover

(Figure 7). To prevent someone from turning off the power to the server, this sliding switch cover

can be shut and locked using a single screw on the inside of the front bezel.

Figure 5. A key lock on the front bezel of the Compaq ProLiant 2500 Server secures data and internal

components from unauthorized access.

Figure 6. Three set screws mounted on the chassis under the side panel are provided for optional use to lock

rear-mounted, quick release modules in place. If moved to the indicated positions, these three screws will

secure the processor module, the I/O module, and the fan against quick release and removal.

Figure 7. The sliding cover for the ProLiant 2500 power switch can be locked from the inside.

CZR-002.EPS

CZR-051.eps

CZR-051a.eps

CZR-041.EPS

TECHNOLOGY BRIEF (cont.)

201A/1196

Processors

The ProLiant 2500 uses the Intel 82440 FX chip set and is designed to support up to two Pentium

Pro processors. The server comes standard with a single 200-MHz Pentium Pro processor with an

integrated 16-Kbyte L1 cache (8 Kbyte for data and 8 Kbyte for instructions) and an integrated

256-Kbyte L2 cache.

The 200-MHz Pentium Pro processor provides the next-generation performance required for

Microsoft Windows NT and NetWare applications. The integrated L2 cache runs at processor

speed and is protected by Error Checking and Correcting (ECC) code. The L2 cache has a 4-way

set-associate cache memory organization, which is an extension of the 2-way structure. In the

ProLiant 2500, the total cache memory is divided into four banks (or ways) of equal size rather

than two banks, and main memory is divided into logical pages equal to the size of the four banks.

This structure provides four ways that data from the same physical address in main memory can

be stored in cache, thereby increasing flexibility of the cache and increasing cache hit rate. In

typical applications, the higher cache hit rate allows the Pentium Pro L2 cache to outperform 2-

way caches that are twice as large. For specific information about ProLiant 2500 performance,

refer to the Compaq performance summary titled ProLiant 2500 TPC-C Performance.

Intel Pentium Pro processors have precise voltage requirements; therefore, systems based on the

Pentium Pro processors need to provide dedicated regulators for each processor (and for the

processor support chips). The ProLiant 2500 includes a Compaq Processor Power Module for

each processor. The Processor Power Module determines the precise voltage requirement of the

processor and the support chip set and ensures that the proper voltage is delivered to each.

The ProLiant 2500 can be upgraded by adding a second 200-MHz Pentium Pro processor with an

L2 cache of either 256 Kbytes or 512 Kbytes. The Compaq ProLiant 2500 Processor Option Kit

contains both a 200-MHz Pentium Pro processor with 256-Kbyte L2 cache and the Compaq

Processor Power Module needed for the upgrade. Compaq strongly recommends use of this kit to

upgrade the ProLiant 2500 because Pentium Pro processors purchased from third-party vendors

may not fully meet the specifications for use in the ProLiant 2500.

In the ProLiant 2500, the second processor can be configured in either of two ways:

• as an idle backup processor to increase availability, or

• as a second active processor to boost processing power as well as availability.

Customers running operating systems capable of symmetric multiprocessing (SMP) would most

likely configure both processors as active. Use of an idle backup processor would be most

common among customers running a non-SMP-capable Netware operating system. Compaq

recommends configuring the second processor as active whenever possible to take advantage of

the increased processing power.

Use of a second processor in the ProLiant 2500 increases availability by providing the means for

rapid recovery in the event of a processor failure. Recovery from a processor failure in the

ProLiant 2500 requires rebooting the system. If during system configuration the Automatic

Recovery Server feature of the ProLiant 2500 is enabled, restarting the server after a processor

failure will be automatic. If a processor fails, the server will record the failure in the Server

Health Logs and attempt to reboot the system. With a successful reboot, the second processor will

automatically assume the load of the failed processor.

TECHNOLOGY BRIEF (cont.)

201A/1196

Memory

The ProLiant 2500 architecture is designed to use buffered Extended Data Out (EDO) RAM. The

basic idea behind EDO RAM is to decrease cycle time for sequential accesses to the same RAM

and in so doing, to allow for more memory bandwidth. EDO RAM has an output buffer that

allows the memory chip to accept the next address while still holding the previous data result on

the data bus. This concept is a refinement of Fast Page Mode (FPM) RAM and increases main

memory performance, particularly for multiprocessor systems.

In preliminary TPC-C Benchmark tests conducted at Compaq labs, performance of a single-

processor system with a 256-Kbyte L2 cache and 256 megabytes of EDO RAM operating under

Windows NT was as much as 16 percent higher than for the same system using FPM RAM.

Performance of a dual-processor processor system with a 256-Kbyte L2 cache and 256 megabytes

of EDO RAM was as much as 44 percent higher than for the same system using FPM RAM.

These results were obtained using the TPC-C version 3.1 Benchmark test, Microsoft Windows NT

3.51, and SQL Server 6.5.

The ProLiant 2500 comes standard with a 32-megabyte EDO DIMM in the first of four available

DIMM slots on the processor board. Additional DIMMs may be installed one at a time. The

slide-out processor board and pluggable memory modules make memory upgrades in the ProLiant

2500 simple.

Compaq highly recommends the use of higher bandwidth EDO memory in the ProLiant 2500 to

support the increased memory bandwidth requirement of SMP operation. Compaq offers ProLiant

2500 Memory Expansion Kits containing a single 32-, 64-, 128-, or 256-megabyte buffered EDO

DIMM. The system is expandable to 1 gigabyte of ECC-protected memory using the 256-

megabyte buffered EDO DIMMs expected to be available in November 1996.

For the benefit of customers who plan to standardize on FPM memory to reduce their inventory of

service spares or customers who have already invested heavily in FPM DIMMs, the

ProLiant 2500 supports use of buffered FPM DIMMs with a 4K refresh and combinations of

buffered EDO and FPM DIMMs. Compaq has available four buffered FPM memory expansion

kits developed for the Compaq ProLiant 5000 Server. Because memory in the ProLiant 5000 is

interleaved, each of these kits contains four buffered FPM DIMMs rather than one. As the table

below indicates, the ProLiant 2500 supports use of the DIMMs from three of the four ProLiant

5000 kits.

ProLiant 5000 Memory Expansion Kits

Compaq

Part No. Total

Memory Kit Contents Memory Refresh Supported in

ProLiant 2500

219282-001 64-MB 4 x 16-MB DIMMs 4K yes

219283-001 128-MB 4 x 32-MB DIMMs 4K yes

219284-001 256-MB 4 x 64-MB DIMMs 4K yes

219285-001 512-MB 4 x 128-MB DIMMs 8K no

Customers considering use of FPM DIMMs in the ProLiant 2500 need to be mindful that there is a

performance tradeoff in doing so: FPM memory gives a memory bandwidth of 178 megabytes

per second, while EDO memory gives a bandwidth of 267 megabytes per second.

TECHNOLOGY BRIEF (cont.)

201A/1196

I/O

The ProLiant 2500 is optimized for PCI to support the growing I/O needs of departments and

remote sites. The I/O backplane contains six PCI slots, four of which are shared PCI/EISA slots

to provide backward compatibility with existing EISA controllers. Because the PCI controllers

for video, network interface, and storage are integrated in the ProLiant 2500, all six expansion

slots remain available for other uses.

The ProLiant 2500 contains a high-performance, integrated 10/100 TX Ethernet Network

Interface Controller (NIC) on the PCI local bus for high-performance network throughput. This

NIC features the Compaq/TI ThunderLAN chip set, the NetFlex-3 Network Driver Suite, and

autosensing capabilities. It can accurately transfer information at either 10 megabits per second or

at 100 megabits per second. The 10/100 TX Ethernet NIC automatically senses the required data

speed and adjusts its transfer rate to match. Because this controller comes integrated in the

ProLiant 2500, it meets customer requirements for higher bandwidth now, increases reliability,

saves customers the cost of purchasing and installing a 100 Mb/s TX upgrade module later, and

leaves a PCI slot open to support other network topologies such as Token Ring and 100VG-

AnyLAN.

To provide cabling options, the ProLiant 2500 processor board contains both an RJ-45 and an

AUI connector. The RJ-45 connector runs either at 10 megabits per second or at 100 megabits per

second. The AUI connector runs at 10 megabits per second. An optional AUI-to-BNC

transceiver (Compaq Part Number 192732) can be used to convert the AUI connection to a BNC

connection for customers using coaxial Ethernet cable. This transceiver is provided in most

international Compaq country kits.

The ProLiant 2500 contains 1 megabyte of 256K x 16, 70-nanosecond video DRAM and an

integrated Cirrus Logic PCI video controller (Cirrus 54M30) that supports 256 colors at a

resolution of 1024 x 768 pixels.

The ProLiant 2500 is the first Compaq server to support a hot-pluggable keyboard. This feature is

advantageous for deploying the server at remote sites.

Storage

In today’s networking environments the storage subsystem is a key contributor to overall server

performance. In designing the ProLiant 2500, Compaq incorporated the latest Ultra SCSI

technology. The ProLiant 2500 includes the new integrated Compaq Wide-Ultra SCSI Controller

with the Symbios 875 controller chip as a standard feature. This PCI-based controller fully

supports the SCSI and SCSI-2 devices in use today, and it is driver upgradable to support Ultra

SCSI devices when they become available. This means that customers deploying ProLiant 2500

servers now will not have to invest in a new controller to support Ultra SCSI devices expected to

be available in 1Q97. The Wide-Ultra SCSI Controller boosts bus speed by effectively doubling

Fast-Wide SCSI transfer rates.

Data Path Transfer Rate

Fast-Wide SCSI 16-bit 20 MB/s

Wide-Ultra SCSI 16-bit 40 MB/s

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