Intel® Raid Controller SRCU41L
User Manual
May 2005
Order Number: C89410-003
INFORMATION IN THIS DOCUMENT IS PROVIDED IN CONNECTION WITH INTEL® PRODUCTS. NO LICENSE, EXPRESS OR IMPLIED, BY
ESTOPPEL OR OTHERWISE, TO ANY INTELLECTUAL PROPERTY RIGHTS IS GRANTED BY THIS DOCUMENT. EXCEPT AS PROVIDED IN
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RELATING TO FITNESS FOR A PARTICULAR PURPOSE, MERCHANTABILITY, OR INFRINGEMENT OF ANY PATENT, COPYRIGHT OR OTHER
INTELLECTUAL PROPERTY RIGHT. Intel products are not intended for use in medical, life saving, life sustaining applications.
Intel may make changes to specifications and product descriptions at any time, without notice.
Designers must not rely on the absence or characteristics of any features or instructions marked “reserved” or “undefined.” Intel reserves these for
future definition and shall have no responsibility whatsoever for conflicts or incompatibilities arising from future changes to them.
®
The Intel
specifications. Current characterized errata are available on request.
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*Other names and brands may be claimed as the property of others.
Copyright © 2005 by Intel Corporation, portions Copyright © 2005 LSI Logic Corporation. All rights reserved.
Raid Controller SRCU41L may contain design defects or errors known as errata which may cause the product to deviate from published
ii Intel® Raid Controller SRCU41L User Manual
Safety Warnings
WARNING: English
Important Safety Instructions
Read all caution and safety statements in this document before performing any of the instructions. See also Intel Server Boards
and Server Chassis Safety Information on the Resource CD and/or at
http:\\support.intel.com\support\motherboards\server\safecert.htm.
SAFETY STEPS: Whenever you remove the chassis covers to access the inside of the system, follow
these steps:
1. Turn off all peripheral devices connected to the system.
2. Turn off the system by pressing the power button.
3. Unplug all AC power cords from the system or from wall outlets.
4. Label and disconnect all cables connected to I/O connectors or ports on the back of the system.
5. Provide some electrostatic discharge (ESD) protection by wearing an antistatic wrist strap attached to
chassis ground of the system-any unpainted metal surface-when handling components.
6. Do not operate the system with the chassis covers removed.
A microprocessor and heat sink may be hot if the system has been running. Also, there may be sharp
pins and edges on some board and chassis parts. Contact should be made with care. Consider wearing
protective gloves.
ADVERTENCIAS: Español
Instrucciones de seguridad importantes
Lea todas las declaraciones de seguridad y precaución de este documento antes de realizar cualquiera de las instrucciones.
Vea Intel Server Boards and Server Chassis Safety Information en el CD Resource y/o en
http:\\support.intel.com\support\motherboards\server\safecert.htm.I
NSTRUCCIONES DE SEGURIDAD: Cuando extraiga la tapa del chasis para acceder al interior del
sistema, siga las siguientes instrucciones:
1. Apague todos los dispositivos periféricos conectados al sistema.
2. Apague el sistema presionando el interruptor encendido/apagado.
3. Desconecte todos los cables de alimentación CA del sistema o de las tomas de corriente alterna.
4. Identifique y desconecte todos los cables enchufados a los conectores E/S o a los puertos situados
en la parte posterior del sistema.
5. Cuando manipule los componentes, es importante protegerse contra la descarga electrostática (ESD).
Puede hacerlo si utiliza una muñequera antiestática sujetada a la toma de tierra del chasis - o a cualquier
tipo de superficie de metal sin pintar.
6. No ponga en marcha el sistema si se han extraído las tapas del chasis.
Si el sistema ha estado en funcionamiento, el microprocesador y el disipador de calor pueden estar aún
calientes. También conviene tener en cuenta que en el chasis o en el tablero puede haber piezas
cortantes o punzantes. Por ello, se recomienda precaución y el uso de guantes protectores.
Intel® Raid Controller SRCU41L User Manual iii
WARNUNG: Deutsch
Wichtige Sicherheitshinweise
Lesen Sie zunächst sämtliche Warn- und Sicherheitshinweise in diesem Dokument, bevor Sie eine der Anweisungen ausführen.
Beachten Sie hierzu auch die Sicherheitshinweise zu Intel-Serverplatinen und -Servergehäusen auf der Ressourcen-CD oder
unter http:\\support.intel.com\support\motherboards\server\safecert.htm.
SICHERHEISMASSNAHMEN: Immer wenn Sie die Gehäuseabdeckung abnehmen um an das
Systeminnere zu gelangen, sollten Sie folgende Schritte beachten:
1. Schalten Sie alle an Ihr System angeschlossenen Peripheriegeräte aus.
2. Schalten Sie das System mit dem Hauptschalter aus.
3. Ziehen Sie den Stromanschlußstecker Ihres Systems aus der Steckdose.
4. Auf der Rückseite des Systems beschriften und ziehen Sie alle Anschlußkabel von den I/O Anschlüssen
oder Ports ab.
5. Tragen Sie ein geerdetes Antistatik Gelenkband, um elektrostatische Ladungen (ESD) über blanke
Metallstellen bei der Handhabung der Komponenten zu vermeiden.
6. Schalten Sie das System niemals ohne ordnungsgemäß montiertes Gehäuse ein.
Der Mikroprozessor und der Kühler sind möglicherweise erhitzt, wenn das System in Betrieb ist.
Außerdem können einige Platinen und Gehäuseteile scharfe Spitzen und Kanten aufweisen. Arbeiten an
Platinen und Gehäuse sollten vorsichtig ausgeführt werden. Sie sollten Schutzhandschuhe tragen.
Der Mikroprozessor und der Kühler sind möglicherweise erhitzt, wenn das System in Betrieb ist. Außerdem können einige
Platinen und Gehäuseteile scharfe Spitzen und Kanten aufweisen. Arbeiten an Platinen und Gehäuse sollten vorsichtig
ausgeführt werden. Sie sollten Schutzhandschuhe tragen.
AVERTISSEMENT: Français
Consignes de sécurité
Lisez attention toutes les consignes de sécurité et les mises en garde indiquées dans ce document avant de suivre toute
instruction. Consultez Intel Server Boards and Server Chassis Safety Information sur le CD Resource CD ou bien rendez-vous
sur le site http:\\support.intel.com\support\motherboards\server\safecert.htm.
CONSIGNES DE SÉCURITÉ: Lorsque vous ouvrez le boîtier pour accéder à l’intérieur du système, suivez
les consignes suivantes:
1. Mettez hors tension tous les périphériques connectés au système.
2. Mettez le système hors tension en mettant l’interrupteur général en position OFF (bouton-poussoir).
3. Débranchez tous les cordons d’alimentation c.a. du système et des prises murales.
4. Identifiez et débranchez tous les câbles reliés aux connecteurs d’E-S ou aux accès derrière le système.
5. Pour prévenir les décharges électrostatiques lorsque vous touchez aux composants, portez une bande
antistatique pour poignet et reliez-la à la masse du système (toute surface métallique non peinte du
boîtier).
6. Ne faites pas fonctionner le système tandis que le boîtier est ouvert.
Le microprocesseur et le dissipateur de chaleur peuvent être chauds si le système a été sous tension.
Faites également attention aux broches aiguës des cartes et aux bords tranchants du capot. Nous vous
recommandons l’usage de gants de protection.
iv Intel® Raid Controller SRCU41L User Manual
AVVERTENZA: Italiano
PASSI DI SICUREZZA: Qualora si rimuovano le coperture del telaio per accedere all’interno del sistema,
seguire i seguenti passi:
1. Spegnere tutti i dispositivi periferici collegati al sistema.
2. Spegnere il sistema, usando il pulsante spento/acceso dell’interruttore del sistema.
3. Togliere tutte le spine dei cavi del sistema dalle prese elettriche.
4. Identificare e sconnettere tutti i cavi attaccati ai collegamenti I/O od alle prese installate sul retro del
sistema.
5. Qualora si tocchino i componenti, proteggersi dallo scarico elettrostatico (SES), portando un cinghia
anti-statica da polso che è attaccata alla presa a terra del telaio del sistema - qualsiasi superficie non
dipinta - .
6. Non far operare il sistema quando il telaio è senza le coperture.
Se il sistema è stato a lungo in funzione, il microprocessore e il dissipatore di calore potrebbero essere
surriscaldati. Fare attenzione alla presenza di piedini appuntiti e parti taglienti sulle schede e sul telaio.
È consigliabile l’uso di guanti di protezione.
Regulatory and Certification Information
Product Regulatory Compliance
This RAID Controller Card complies with the following safety and electromagnetic compatibility (EMC) regulations.
Product Safety Compliance
• UL 1950 - CSA 950 (US/Canada)
• EN 60 950 (European Union)
• IEC60 950 (International)
• CE - Low Voltage Directive (73/23/EEC) (European Union)
Product EMC Compliance - Class B
• FCC /ICES-003 (USA/Canada)
• CISPR 22 (International)
• EN55022 (Europe)
• EN55024 (Europe)
• CE - EMC Directive 89/336/EEC (Europe)
• VCCI (Japan)
• AS/NZS 3548 (Australia / New Zealand)
• BSMI CNS13438 (Taiwan)
• RRL, MIC Notice No. 1997-41 (EMC) & 1997-42 (EMI) (Korea)
Product Regulatory Compliance Markings
The RAID Controller Card is marked with the following compliance markings. Some marking information may be provided on the
packaging and/or in the product documentation due to limited marking space on the product.
• ETL NRTL Mark (US/Canada)
• FCC Mark (US)
• ICES-003 (Canada)
• CE Mark (Europe)
• VCCI Mark (Japan)
• MIC Mark (Korea)
• BSMI DOC Mark (Taiwan)
• ACS C-Tick Mark (Australia)
Intel® Raid Controller SRCU41L User Manual v
Regulatory Compliance Country Marking
cULus Listing Marks USA/Canada
ETL (NRTL) Mark USA/Canada
CE Mark Europe
FCC Marking (Class A) USA This device complies with Part 15 of the FCC Rules.
Operation of this device is subject to the following two
conditions:
(1) This device may not cause harmful interference,
and
(2) This device must accept any interference received,
including interference that may cause undesired
operation.
FCC Marking (Class B) USA
EMC Marking (Class A) Canada CANADA ICES-003 CLASS A
CANADA NMB-003 CLASSE A
EMC Marking (Class B) Canada CANADA ICES-003 CLASS B
CANADA NMB-003 CLASSE B
VCCI Marking (Class A) Japan
VCCI Marking (Class B) Japan
vi Intel® Raid Controller SRCU41L User Manual
Regulatory Compliance Country Marking
BSMI Marking (Class A or B) and
Ta i w an
Class A EMC Warning
RRL MIC Mark Korea
C-Tick Mark Australia
Electromagnetic Compatibility Notices
FCC Verification Statement (USA)
This device complies with Part 15 of the FCC Rules. Operation is subject to the following two conditions: (1) This device may
not cause harmful interference, and (2) this device must accept any interference received, including interference that may cause
undesired operation.
Intel Corporation
5200 N.E. Elam Young Parkway
Hillsboro, OR 97124-6497
Phone: 1-800-628-8686
This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to Part 15 of the FCC
Rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation. This
equipment generates, uses, and can radiate radio frequency energy and, if not installed and used in accordance with the
instructions, may cause harmful interference to radio communications. However, there is no guarantee that interference will not
occur in a particular installation. If this equipment does cause harmful interference to radio or television reception, which can be
determined by turning the equipment off and on, the user is encouraged to try to correct the interference by one or more of the
following measures:
• Reorient or relocate the receiving antenna.
• Increase the separation between the equipment and the receiver.
• Connect the equipment into an outlet on a circuit different from that to which the receiver is connected.
• Consult the dealer or an experienced radio/TV technician for help.
Intel is not responsible for any radio or television interference caused by unauthorized modification of this equipment for
substitution or attachment of connecting cables and equipment other than those specified by Intel. The correction of interferences
casued by such unauhtorized modification, substitution, or attachement will be the responsibility of the user.
This RAID Controller Card has been tested to comply with FCC Standards for home or office use.
ICES-003 (Canada)
This digital apparatus does not exceed the Class B limits for radio noise emissions from digital apparatus set out in the
interference-causing equipment standard entitled “Digital Apparatus,” ICES-003 of the Canadian Department of Communications.
Cet appareil numérique respecte les limites bruits radioélectriques applicables aux appareils numériques de Classe Aprescrites
dans la norme sur le matériel brouilleur: “Appareils Numériques”, NMB-003 édictée par le Ministre Canadien des
Communictations.
Europe (CE Declaration of Conformity)
This product has been tested in accordance too, and complies with the Low Voltage Directive (73/23/EEC) and EMC Directive
(89/336/EEC). The product has been marked with the CE Mark to illustrate its compliance.
Intel® Raid Controller SRCU41L User Manual vii
RRL (Korea)
English translation of the notice above:
1. Type of Equipment (Model Name): Model name on product
2. Certification No.: On RRL certificate. Obtain certificate from local Intel representative
3. Name of Certification Recipient: LSI Logic Corporation
4. Date of Manufacturer: Refer to date code on product
5. Manufacturer/Nation: LSI Logic Corporation / Refer to country of origin marked on product
viii Intel® Raid Controller SRCU41L User Manual
Preface
This guide is the hardware reference and user’s guide for the Intel® RAID Controller SRCU41L. It
contains complete installation instructions and specifications .
For information about how to configure the SRCU41L, and for an overview of the software drivers, see
the Intel RAID Software User’s Guide.
Audience
This document assumes that you have some familiarity with RAID controllers and related support
devices. The people who benefit from this book are:
• Engineers who are designing an SRCU41L into a system
• Anyone installing an SRCU41L in their RAID system
Related Publications
Intel® RAID Software User’s Guide on the Resource CD included with the RAID controller.
Safety Instructions
Use the following safety guidelines to help protect your computer system from potential damage and
to ensure your own personal safety.
When Using Your Computer System
As you use your computer system, observe the following safety guidelines:
CAUTION:
Do not operate your computer system with any cover(s) (such as computer covers, bezels,
filler brackets, and front-panel inserts) removed:
• To help avoid damaging your computer, be sure the voltage selection switch on the power supply is
set to match the alternating current (AC) power available at your location:
– 115 volts (V)/60 hertz (Hz) in most of North and South America and some Far Eastern countries
such as Japan, South Korea, and Taiwan
– 230 V/50 Hz in most of Europe, the Middle East, and the Far East. Also be sure your monitor
and attached peripherals are electrically rated to operate with the AC power available in your
location.
• To help avoid possible damage to the system board, wait five seconds after turning off the system
before removing a component from the system board or disconnecting a peripheral device from the
computer.
Intel® Raid Controller SRCU41L User Manual ix
• To help prevent electric shock, plug the computer and peripheral power cables into properly
grounded power sources. These cables are equipped with 3-prong plugs to ensure proper grounding.
Do not use adapter plugs or remove the grounding prong from a cable. If you must use an extension
cable, use a 3-wire cable with properly grounded plugs.
• To help protect your computer system from sudden, transient increases and decreases in electrical
power, use a surge suppressor, line conditioner, or uninterruptible power supply.
• Be sure nothing rests on your computer system’s cables and that the cables are not located where
they can be stepped on or tripped over.
• Do not spill food or liquids on your computer. If the computer gets wet, consult the documentation
that came with it.
• Do not push any objects into the openings of your computer. Doing so can cause fire or electric shock
by shorting out interior components.
• Keep your computer away from radiators and heat sources. Also, do not block cooling vents. Avoid
placing loose papers underneath your computer; do not place your computer in a closed-in wall unit
or on a rug.
When Working Inside Your Computer
Notice: Do not attempt to service the computer system yourself, except as explained in this guide
and elsewhere in Intel documentation. Always follow installation and service instructions
closely.
1. Turn off your computer and any peripherals.
2. Disconnect your computer and peripherals from their power sources. Also disconnect any telephone
or telecommunications lines from the computer.
Doing so reduces the potential for personal injury or shock.
Also note these safety guidelines:
• When you disconnect a cable, pull on its connector or on its strain-relief loop, not on the cable itself.
Some cables have a connector with locking tabs; if you are disconnecting this type of cable, press in
on the locking tabs before disconnect the cable. As you pull connectors apart, keep them evenly
aligned to avoid bending any connector pins. Also, before you connect a cable, make sure both
connectors are correctly oriented and aligned.
• Handle components and cards with care. Don’t touch the components or contacts on a card. Hold a
card by its edges or by its metal mounting bracket. Hold a component such as a microprocessor chip
by its edges, not by its pins.
Protecting Against Electrostatic Discharge
Static electricity can harm delicate components inside your computer. To prevent static damage,
discharge static electricity from your body before you touch any of your computer’s electronic
components, such as the microprocessor. You can do so by touching an unpainted metal surface, such
as the metal around the card-slot openings at the back of the computer.
x Intel® Raid Controller SRCU41L User Manual
As you continue to work inside the computer, periodically touch an unpainted metal surface to remove
any static charge your body may have accumulated. In addition to the preceding precautions, you can
also take the following steps to prevent damage from electrostatic discharge (ESD):
• When unpacking a static-sensitive component from its shipping carton, do not remove the
component from the antistatic packing material until you are ready to install the component in your
computer. Just before unwrapping the antistatic packaging, be sure to discharge static electricity
from your body.
• When transporting a sensitive component, first place it in an antistatic container or packaging.
• Handle all sensitive components in a static-safe area. If possible, use antistatic floor pads and
workbench pads.
Intel® Raid Controller SRCU41L User Manual xi
xii Intel® Raid Controller SRCU41L User Manual
Contents
Contents
1 Overview.......................................................................................................................1
1.1 Overview.......................................................................................................................................1
1.1.1 Operating System Support ..............................................................................................2
1.2 Features........................................................................................................................................3
1.2.1 Drive Roaming .................................................................................................................3
1.2.2 Drive Migration................................................................................................................. 3
1.3 Hardware ...................................................................................................................................... 4
1.3.1 Intel
2 Hardware Installation ...................................................................................................5
2.1 Requirements ...............................................................................................................................5
2.2 Quick Installation ..........................................................................................................................5
2.3 Detailed Installation ......................................................................................................................6
2.3.1 Resolving a Configuration Mismatch .............................................................................11
2.4 After You Have Installed the Storage Adapter............................................................................11
3 Storage Adapter Characteristics .................................................................................13
3.1 The Intel
3.1.1 Single-Channel Raid Controller .....................................................................................13
3.2 Intel
3.3 Technical Specifications ............................................................................................................. 15
®
3.3.1 Specifications.................................................................................................................16
3.3.2 Array Performance Features .........................................................................................16
3.3.3 Fault Tolerance.............................................................................................................. 17
3.3.4 Electrical Characteristics ...............................................................................................17
3.3.5 Thermal and Atmospheric Characteristics..................................................................... 17
3.3.6 Safety Characteristics .................................................................................................... 18
®
SRCU41L Raid Controller Features.......................................................................4
®
Raid Controller SRCU41L Storage Adapter Overview ..............................................13
Raid Controller SRCU41L Characteristics ........................................................................15
A Glossary of Terms and Abbreviations.........................................................................19
Figures
1 Intel® Raid Controller SRCU41L Block Diagram .......................................................................... 2
2 Install the Battery Backup Unit......................................................................................................7
3 Inserting the Intel
4 Terminating an Internal SCSI Disk Array....................................................................................10
5 Intel
Intel® Raid Controller SRCU41L User Manual xiii
®
Raid Controller SRCU41L Card Layout ............................................................................14
®
SRCU41L Raid Controller in a PCI Slot.........................................................8
Contents
Tables
1Intel
®
Raid Controller SRCU41L Storage Adapter Comparisons ................................................. 4
2 Target IDs..................................................................................................................................... 8
3 Maximum Cable Length................................................................................................................ 9
4Intel
5Intel
6Intel
®
Raid Controller SRCU41L Headers and Connectors........................................................14
®
Raid Controller SRCU41L Characteristics........................................................................ 15
®
Raid Controller SRCU41L Specifications.......................................................................... 16
7 Array Performance Features ...................................................................................................... 16
8Intel
®
Raid Controller SRCU41L Fault Tolerance Features........................................................17
9 Maximum Power Requirements ................................................................................................. 17
10 Glossary of Terms and Abbreviations ........................................................................................ 19
Revision History
Date Revision Description
September 2004 001 Initial release.
November 2004 002 Updated formatting and removed preliminary text.
May 2005 003
Changed PCI reference from 64/66 to 64/100 and added
safety information .
xiv Intel® Raid Controller SRCU41L User Manual
Overview 1
This section provides a general overview of the Intel® Raid Controller SRCU41L of PCI-to-SCSI
storage adapters with RAID control capabilities. It consists of the following sections.
• Section 1.1, “Overview,” page 1-1
• Section 1.2, “Features,” page 1-3
• Section 1.3, “Hardware,” page 1-4
1.1 Overview
The Intel® Raid Controller SRCU41L is a high-performance intelligent PCI-to-SCSI host adapters
with RAID control capabilities. The Intel
performance, and fault-tolerant disk subsystem management. It is an ideal RAID solution for the
internal storage of workgroup, departmental, and enterprise systems. The Intel
SRCU41L offers a cost-effective way to implement RAID in a server.
®
Intel
Raid Controller SRCU41L is available with one SCSI channel.
• The Intel
SCSI channel. The Intel
interconnect (VHDCI) 68-pin external SCSI connector and one high-density cable
interconnect (HDCI) 68-pin internal SCSI connector.
®
Raid Controller SRCU41L has one LSI53C1020 controller chip that controls one
®
Raid Controller SRCU41L has one very high-density cable
®
Raid Controller SRCU41L provides reliability, high
®
Raid Controller
Intel® Raid Controller SRCU41L User Manual 1
Overview
Figure 1. Intel
®
Raid Controller SRCU41L Block Diagram
Intel® RAID Controller SRCU41L
1-Channel Low Profile PCI RAID
66 MHz
64-Bit/
Secondary PCI Bus
®
Intel
I/O Processor
80302
64-Bit
66 MHz
SDRAM
Address/
Data
17-Bit
Single LVD/SE
SCSI Channel
(LSI53C1020)
Cache
SDRAM
RAD BUS
Battery
Backup
XA Bus
Latches
8-Bit
XD Bus
8-Bit
XA Bus
XA/XD Bus
XA/XD Bus
XA/XD Bus
XA/XD Bus
XA/XD Bus
8-Bit
Decode
Logic
Miscellaneous
Registers
Serial
Port
Flash
ROM
1 or 2 MByte
NSVRAM
32K x 8
66 MHz64-Bit/
Host PCI Bus
PCI Edge Connector
The Intel® Raid Controller SRCU41L supports a low-voltage differential (LVD) or a single-ended
(SE) SCSI bus. With LVD, you can use cables up to 12 meters long. Throughput on each SCSI
channel can be as high as 320 Mbps.
PCI is an I/O architectures. It is designed to increase data transfers without slowing down the
central processing unit (CPU). You can install the Intel
in PCI computer systems with a standard bracket type. With these adapters in your system, you can
connect SCSI devices over a SCSI bus.
Note: For Ultra320 SCSI performance, you must connect only LVD devices to the bus. Do not mix SE
with LVD devices, or the bus speed will be limited to the slower SE (Ultra SCSI) SCSI data
transfer rates. Do not connect a high voltage differential (HVD) device to the controller.
1.1.1 Operating System Support
The Intel® Raid Controller SRCU41L supports major operating systems, such as Windows (2000,
Server 2003, and XP), Red Hat* Linux, SuSe Linux, Novell* NetWare, SCO* OpenServer, and
UnixWare*. Other software support ensures data integrity by intelligently testing the network
before completing negotiation.
®
SRCU41L Raid Controller storage adapter
2 Intel® Raid Controller SRCU41L User Manual
1.2 Features
Features of the Intel® Raid Controller SRCU41L include:
• support for hard drives with capacities greater than eight Gbytes
• online RAID level migration
• RAID remapping
• no reboot necessary after expansion
• Intel I/O Processor 80302 @ 100 MHz PCI 64/100
• more than 200 Qtags per array
• user-specified rebuild rate
• Wide Ultra320 LVD SCSI performance up to 320 Mbps
Overview
• 64 Mbytes of synchronous dynamic random access memory (SDRAM) integrated on the board
for the Intel
®
SRCU41L Raid Controller.
• one internal and one external SCSI connector for the Intel
• support for RAID levels 0, 1, 5, 10, and 50
• advanced array configuration and management utilities
• online capacity expansion and raid configuration simple and full featured BIOS tool
• support for up to 14 SCSI drives per channel on storage system with SAF-TE enclosures
(SCSI accessed fault-tolerant enclosures): 15 SCSI drives per channel for other configurations
• 32 Kbits x 8 NVRAM for storing RAID system configuration information; the Intel
Controller SRCU41L firmware is stored in flash ROM for easy upgrade.
Note: Battery backup is available for the Intel
can purchase the controller with the battery backup unit (BBU) or purchase the BBU separately.
1.2.1 Drive Roaming
Drive roaming (also known as configuration on disk) is when the hard drives are moved around in
a given configuration. Configuration information is saved in both nonvolatile random access
memory (NVRAM) on the Intel
controller. This maintains the integrity of the data on each drive, even if the drives have changed
their target ID.
Before performing drive roaming, make sure that you have first powered off both your platform
and your drive enclosure.
®
Raid Controller SRCU41L
®
Raid
®
SRCU41L Raid Controller through a daughter card. You
®
SRCU41L Raid Controller and in the hard drives attached to the
1.2.2 Drive Migration
Drive migration is the transfer of a set of hard drives in an existing configuration from one
controller to another. This is always done on a blank controller. Drives should not be roamed and
migrated at the same time.
Intel® Raid Controller SRCU41L User Manual 3
Overview
1.3 Hardware
You can install the Intel® SRCU41L Raid Controller in a computer with a mainboard that has 5 V
or 3.3 V, 32- or 64-bit PCI slots.
The following subsection describes the hardware configuration feature.
1.3.1 Intel® SRCU41L Raid Controller Features
Table 1. Intel® Raid Controller SRCU41L Storage Adapter Comparisons
Specification Intel® SRCU41L Raid Controller
RAID Levels 0, 1, 5, 10, 50
SCSI Device Types Synchronous or Asynchronous
Devices per SCSI Channel Up to 15 Wide SCSI devices
SCSI Channels 1
SCSI Data Transfer Rate Up to 320 Mbytes/s per channel
SCSI Bus LVD or SE
Cache Function
Multiple Logical Drives/Arrays per Controller Up to 40 logical drives per controller or per logical array
Maximum # of Intel® Raid Controller SRCU41Ls per
System
Online Capacity Expansion Yes
Dedicated and Pool Hot Spare Yes
Hot Swap Devices Supported Yes
Non-Disk Devices Supported Yes
Mixed Capacity Hard Disk Drives Yes
Number of
16-bit Internal Connectors
Number of
16-bit External Connectors
Cluster Support No
Hardware Exclusive OR (XOR) Assistance Yes
Direct I/O Yes
Architecture Fusion-MPT
Write-back, Write-through, Adaptive Read Ahead, Non
Read Ahead, Read Ahead, Cache I/O, Direct I/O
12
1
1
4 Intel® Raid Controller SRCU41L User Manual
Hardware Installation 2
This chapter describes the procedures used to install the Intel® Raid Controller SRCU41L. It
contains the following sections:
• Section 2.1, “Requirements” on page 5
• Section 2.2, “Quick Installation” on page 5
• Section 2.3, “Detailed Installation” on page 6
• Section 2.4, “After You Have Installed the Storage Adapter” on page 11
2.1 Requirements
The following items are required to install a Intel® Raid Controller SRCU41L:
• An Intel
• A host computer with an available 32-bit or 64-bit PCI expansion slot
• The Resource CD, which contains drivers and documentation
• The necessary internal and/or external SCSI cables
• Ultra, Ultra2, Ultra160, or Ultra320 SCSI hard disk drives (although backward compatible,
SCSI uses the speed of the slowest device on the bus)
®
SRCU41L Raid Controller
Intel strongly recommends using an uninterruptible power supply (UPS).
2.2 Quick Installation
The following steps are for quick Intel® Raid Controller SRCU41L installation. These steps are for
experienced computer users/installers. Section 2.3, “Detailed Installation”, contains the steps for
all others to follow.
1. Turn power off to the server and all hard disk drives, enclosures, and system components and
remove the PC power cord.
2. Open the cabinet of the host system by following the instructions in the host system technical
documentation.
3. Determine the SCSI ID and SCSI termination requirements.
4. Install the Intel
termination correctly on the SCSI channel(s). Ensure that the SCSI cables you use conform to
all SCSI specifications.
5. Perform a safety check.
— Ensure that all cables are properly attached.
— Ensure that the Intel
— Close the cabinet of the host system.
®
Raid Controller SRCU41L in the server, connect SCSI devices to it, and set
®
Raid Controller SRCU41L is properly installed.
Intel® SRCU41L Raid Controller User Manual 5
Hardware Installation
6. Turn power on after completing the safety check.
2.3 Detailed Installation
This section provides detailed instructions for installing a Intel® Raid Controller SRCU41L.
1. Unpack the Storage Adapter
Unpack and remove the Intel
®
Raid Controller SRCU41L. Inspect it for damage. If it appears
damaged, or if any items listed below are missing, contact your Intel support representative.
The Intel
—the Intel
®
Raid Controller SRCU41L is shipped with
®
SRCU41L Raid Controller CD, which contains drivers for supported operating
systems, an electronic version of this Hardware and Software User Guide, and other
related documentation.
— a license agreement
2. (Optional, required to enable Write Back Cache) Attach Battery Backup Unit (BBU) to the
adapter.
a. Remove the Battery Backup Unit from its packaging.
b. Connect the wire from the battery to the circuit board. (A)
c. Position the BBU over the RAID adapter so the connectors line up (B). Press the BBU onto
the adapter.
d. Turn the adapter over.
e. Using three screws (C), secure the BBU to the RAID adapter.
6 Intel® SRCU41L Raid Controller User Manual
Figure 2. Install the Battery Backup Unit
A
B
Hardware Installation
C
3. Power Down the System
Turn off the computer and remove the AC power cord. Remove the system’s cover. See the
system documentation for instructions.
4. Check the jumpers.
Ensure that the jumper settings on the your Intel
Chapter 3, “Storage Adapter Characteristics” for diagrams of the Intel
SRCU41Ls with their jumpers and connectors.
5. Install the Intel
®
SRCU41L Raid Controller
®
Raid Controller SRCU41L are correct. See
®
Raid Controller
Intel® SRCU41L Raid Controller User Manual 7
Hardware Installation
Select a PCI slot and align the Intel® Raid Controller SRCU41L PCI bus connector to the slot.
Press down gently but firmly to ensure that the card is properly seated in the slot, as shown in
Figure 3. Then screw the bracket into the computer chassis.
Figure 3. Inserting the Intel
®
SRCU41L Raid Controller in a PCI Slot
Bracket Screw
Motherboard
Press Here
Press Here
32-bit Slots (3.3 V)
Edge of
6. Set the Target IDs.
Set target identifiers (TIDs) on the SCSI devices. Each device in a channel must have a unique
TID. Provide unique TIDs for non-disk devices (CD-ROM or tapes), regardless of the channel
where they are connected. The Intel
7, which is the highest priority. The arbitration priority for a SCSI device depends on its TID.
Table 2. Target IDs
Priority Highest Lowest
TID 7 6 5 . . . 2 1 0 15 14 . . . 9 8
8 Intel® SRCU41L Raid Controller User Manual
64-bit Slots (5 V)
®
Raid Controller SRCU41L automatically occupies TID
Hardware Installation
7. Connect SCSI Devices to the Storage Adapter
Use SCSI cables to connect SCSI devices to the Intel
®
Raid Controller SRCU41L.
To connect the SCSI devices
a. Disable termination on any SCSI device that does not sit at the end of the SCSI bus.
b. Configure all SCSI devices to supply TERMPWR.
c. Connect cables to the SCSI devices. See the following table for maximum cable lengths.
Table 3. Maximum Cable Length
Device Cable Length in Meters
Fast SCSI (10 Mbytes/s) 3
SE SCSI 3
Ultra SCSI 1.5
LVD 12
You can connect up to 15 Ultra SCSI devices to each SCSI channel.
System throughput problems can occur if SCSI cables are not the correct type. To minimize
the potential for problems,
— use cables no longer than 12 meters for Ultra160 and Ultra320 devices (it’s better to use
shorter cables if possible)
— use the shortest SCSI cables for SE SCSI devices (no longer than 3 meters for Fast SCSI,
no longer than 1.5 meters for an 8-drive Ultra SCSI system, and no longer than 3 meters
for a 6-drive Ultra SCSI system)
— use active termination
— avoid clustering the cable nodes
— note that the cable stub length must be no greater than 0.1 meter (4 inches)
— use high impedance cables
— route SCSI cables carefully.
8. Set SCSI Termination
The SCSI bus is an electrical transmission line and must be terminated properly to minimize
reflections and losses. Set termination at each end of the SCSI cable(s).
For a disk array, set SCSI bus termination so that removing or adding a SCSI device does not
disturb termination. An easy way to do this is to connect the Intel
®
Raid Controller SRCU41L
to one end of the SCSI cable and to connect an external terminator module at the other end of
the cable. You can then connect SCSI disk drives to the connectors between the two ends of
the cable. If necessary, disable termination on the SCSI devices. (This is not necessary for
Ultra320 and Ultra160 SCSI drives.)
Set the termination so that SCSI termination and TermPWR are intact when any disk drive is
removed from a SCSI channel, as shown in Figure 4.
Intel® SRCU41L Raid Controller User Manual 9
Hardware Installation
Figure 4. Terminating an Internal SCSI Disk Array
Terminator
ID2 – No Termination
ID1 – No Termination
ID0 – Boot Drive
No Termination
Intel® SRCU41L
Raid Controller
Host Computer
9. Power On Host System
Replace the computer cover, and reconnect the AC power cords. Turn power on to the host
computer. Ensure that the SCSI devices are powered up at the same time as, or before, the host
computer. If the computer is powered up before a SCSI device, the device might not be
recognized.
During boot, a BIOS message appears.
The firmware takes several seconds to initialize. During this time, the Intel
®
Raid Controller
SRCU41L scans the SCSI channel(s).
The Intel
seconds. The second portion of the BIOS message displays the Intel
®
Raid Controller SRCU41L BIOS Configuration utility prompt times out after several
®
Raid Controller SRCU41L
number, firmware version, and cache SDRAM size. The numbering of the controllers follows the
PCI slot scanning order used by the host mainboard.
10 Intel® SRCU41L Raid Controller User Manual
If you want to run the Intel® Raid Controller SRCU41L Configuration utility or BIOS Console at
this point, press the appropriate keys when this message appears:
Press <CTRL><G> for WebBIOS
2.3.1 Resolving a Configuration Mismatch
If the replacement controller has a previous configuration, a message displays during the power-on
self test (POST) stating that there is a configuration mismatch. A configuration mismatch occurs
when the configuration data in the NVRAM and the hard disk drives are different. You need to
update the configuration data in the NVRAM with the data from the hard disk drive.
Perform the following steps to resolve the mismatch.
1. Press <Ctrl> <G> when prompted during bootup to access the BIOS Configuration Utility.
2. Select Configure—> View/Add Configuration.
This gives you the option to view both the configuration on the NVRAM and the hard drive
disk.
3. Select the configuration on disk.
Hardware Installation
4. Press <ESC> and select YES to update NVRAM.
5. Exit and reboot.
2.4 After You Have Installed the Storage Adapter
After Intel® Raid Controller SRCU41L installation, you must configure the Intel® Raid Controller
SRCU41L and install the operating system driver. The Software User’s Guide instructs you on the
configuration options and how to set them on your Intel
User’s Guide also provides detailed installation instructions for operating system drivers.
®
Raid Controller SRCU41L. The Software
Intel® SRCU41L Raid Controller User Manual 11
Hardware Installation
12 Intel® SRCU41L Raid Controller User Manual
Storage Adapter Characteristics 3
This chapter describes the characteristics of the Intel® Raid Controller SRCU41L. This chapter
contains the following sections:
• “The Intel
• “Intel
• “Technical Specifications”
3.1 The Intel® Raid Controller SRCU41L Storage
Adapter Overview
PCI is a high-speed standard local bus for interfacing I/O components to the processor and memory
subsystems in a high-end PC. The component height on the top and bottom of the Ultra320 SCSI
host adapters follows the PCI Local Bus Specification, Revision 2.2, and PCI-X Addendum to the
PCI Local Bus Specification, Revision 1.0a. The Intel
systems with PCI standard and bracket type.
®
Raid Controller SRCU41L Storage Adapter Overview”
®
Raid Controller SRCU41L Characteristics”
®
Raid Controller SRCU41Ls are used in PCI
Table 6 on page 16 lists the features for the Intel
®
3.1.1 Single-Channel Raid Controller
The Intel® SRCU41L Raid Controller is a single-channel Ultra320 SCSI-to-PCI storage adapter
that supports one Ultra320 SCSI channel. The Intel
interface is made through connectors J1 and J7. See Figure 5 and Table 4 for information about the
important connectors and headers on the Intel® SRCU41L Raid Controller.
Raid Controller SRCU41L.
®
Raid Controller SRCU41L SCSI channel
Intel® Raid Controller SRCU41L User Manual 13
Storage Adapter Characteristics
Figure 5. Intel® Raid Controller SRCU41L Card Layout
64 MBytes SDRAM
Optional Backup
External
Very High-
Density
68-Pin SCSI
Connector
Internal High-Density
68-Pin SCSI Connector
J1
J7
J9
J10
Single Channel Ultra 320 SCSI Controller Intel 80302 100 MHz PCI 64/66 MHz Slot
J2
J5
J6
J4
Table 4. Intel® Raid Controller SRCU41L Headers and Connectors
Connector Description Type Comments
J1
Internal SCSI
Connector
J2 Dirty Cache LED 2-pin header
J4
Onboard BIOS
Enable
J5 SCSI Activity LED 2-pin header
J6 I2C Header
J7
J8
J9
J10
NOTE: The Intel
External SCSI
Connector
BBU Daughter Card
Connector
Termination Power
Enable
SCSI Bus
Termination Enable
®
SRCU41L Raid Controller does not have an alarm integrated onto the board. For an alarm,
the controller requires a daughter card with integrated alarm. If you order the daughter card for battery
backup, it will have the alarm on it.
68-pin
connector
2-pin header
4-pin
connector
68-pin
connector
40-pin
connector
2-pin header
3-pin header
Internal high-density SCSI bus connector.
Connector for an LED mounted on the system
enclosure. The LED is lit when the data in the cache has
not yet been written to the storage device.
No jumper: RAID onboard BIOS enabled (default)
Jumpered: RAID onboard BIOS disabled
Connector for enclosure LED to indicate data transfers.
Connection is optional.
Reserved
External very high-density SCSI bus connector
Connector for optional backup battery unit (BBU)
located on a daughter card
Jumpered: Onboard termination power enabled. (default
- do not change)
Jumper on pins 1-2: Software uses drive detection to
control SCSI termination (default: do not change).
Jumper on pins 2-3: Onboard SCSI termination
disabled.
No jumper: Onboard SCSI termination enabled.
J8
Battery Unit
Connector
14 Intel® Raid Controller SRCU41L User Manual
Storage Adapter Characteristics
3.2 Intel® Raid Controller SRCU41L Characteristics
Table 5 shows the general characteristics for the Intel® Raid Controller SRCU41L.
Table 5. Intel
®
Raid Controller SRCU41L Characteristics
Flash
ROM
Yes Yes
a
Serial
EEPROM
b
16-bit SE
or LVD
interfaces
LVD/SE
Signaling
Ultra320 SCSI Data Transfers SCSI Features
Up to 320 Mbytes/s as well as Fast,
Ultra, Ultra2, and Ultra160 speeds;
Synchronous offsets up to 62.
a. For boot code and firmware
b. For BIOS configuration storage
®
The Intel
compatibility of the SCSI domain. The Intel
Raid Controller SRCU41L ensures data integrity by intelligently validating the
®
architecture that allows for thinner drivers and better performance.
3.3 Technical Specifications
The design and implementation of the Intel® Raid Controller SRCU41L minimizes
electromagnetic emissions, susceptibility to radio frequency energy, and the effects of electrostatic
discharge. The Intel
Certification logo, Canadian Compliance Statement, Korean MIC, Taiwan BSMI, and Japan VCCI,
and they meet the requirements of CISPR Class B.
®
SRCU41L Raid Controller carries the CE mark, C-Tick mark, FCC Self-
SCSI
Termination
Plug n Play
Scatter/Gather
Activity LED
Active, Single
Ended, or LVD
SRCU41L Raid Controller also uses Fusion-MPT
Intel® Raid Controller SRCU41L User Manual 15
Storage Adapter Characteristics
3.3.1 Specifications
Table 6 lists the specifications for the Intel® SRCU41L Raid Controller.
Table 6 . Intel
®
Specification Intel® Raid Controller SRCU41L
Raid Controller SRCU41L Specifications
Processor
(PCI Controller)
Operating Voltage 3.3 V, 5 V, +12 V with battery only
Card Size
Array Interface to Host PCI Rev 2.2
PCI Bus Data Transfer Rate
SCSI Controller(s) One LSI53C1020 Single SCSI controller
SCSI Connectors
SCSI Bus Termination Active, single-ended or LVD
Termination Disable Automatic through cable and device detection
Cache Configuration Integrated 64 Mbytes 66 MHz ECC
Double-Sided Dual Inline Memory Modules
(DIMMs)
Size of Flash ROM for Firmware 1 Mbyte flash ROM
Non-volatile Random Access Memory
(NVRAM)
Intel® 80302
64-bit RISC processor @ 66 MHz
Low-Profile, Half-length PCI Adapter card size (6.875" X
4.2")
Up to 533 Mbytes/s at
64-bit/66 MHz
One 68-pin internal high-density connector for SCSI
devices. One very high-density 68-pin external connector for
Ultra320 and Wide SCSI.
No
32 Kbyte for storing RAID configuration
3.3.2 Array Performance Features
Table 7 shows the Intel® Raid Controller SRCU41L array performance features.
Table 7. Array Performance Features
Specification Intel® Raid Controller SRCU41L
PCI Host Data Transfer Rate 533 Mbytes/s
Drive Data Transfer Rate 320 Mbytes/s
Maximum Scatter/Gathers 26 elements
Maximum Size of I/O Requests 6.4 Mbytes in 64 Kbyte stripes
Maximum Queue Tags per Drive As many as the drive can accept
Stripe Sizes 2, 4, 8, 16, 32, 64, or 128 Kbyte
Maximum Number of Concurrent Commands 255
Support for Multiple Initiators Yes
16 Intel® Raid Controller SRCU41L User Manual
3.3.3 Fault Tolerance
Table 8 shows the Intel® Raid Controller SRCU41L fault tolerance features.
®
Table 8. Intel
Support for SMART
Optional Battery Backup for Cache Memory
Drive Failure Detection Automatic
Drive Rebuild Using Hot Spares Automatic
Parity Generation and Checking Yes
a. The Self Monitoring Analysis and Reporting Technology (SMART) detects up to 70 percent of
all predictable disk drive failures. SMART also monitors the internal performance of all motors,
heads, and drive electronics.
Raid Controller SRCU41L Fault Tolerance Features
Specification Intel® Raid Controller SRCU41L
a
3.3.4 Electrical Characteristics
Storage Adapter Characteristics
Yes
3.6 V/600mAH battery pack. Up to 48 hours data
retention for
64 MB.
This section provides the power requirements for the Intel® Raid Controller SRCU41Ls. Table 9
lists the maximum power requirements, which include SCSI TERMPWR, under normal operation.
Table 9. Maximum Power Requirements
Storage
Adapter
320-1
PCI/PCI-X/
Express +12 V
115 mA; used
only if battery is
present
PCI/PCI-X +5.0
V
1.5 A (PCI only) N/A 15 W 0 °C to 55 °C
PCI/PCI-X/
Express+3.3 V
PCI PRSNT1#/
3.3.5 Thermal and Atmospheric Characteristics
For all Intel® Raid Controller SRCU41Ls, the thermal and atmospheric characteristics are
• relative humidity range: 5% to 90% noncondensing
• maximum dew point temperature: 32 °C
• airflow must be at least 300 lfm to keep the LSI53C1020 and LSI53C1030 heat sink
temperature below 80 °C
The following parameters define the storage and transit environment for the Intel
SRCU41L
• temperature range: − 40 °C to + 105 °C (dry bulb)
• relative humidity range: 5% to 90% noncondensing
PRSNT2#
Power
Over the
Operating
Range
®
Raid Controller
Intel® Raid Controller SRCU41L User Manual 17
Storage Adapter Characteristics
3.3.6 Safety Characteristics
The Intel® Raid Controller SRCU41L meets or exceeds the requirements of UL flammability
rating 94 V0. Each bare board is also marked with the supplier’s name or trademark, type, and UL
flammability rating. For the boards installed in a PCI bus slot, all voltages are below the SELV 42.4
V limit.
18 Intel® Raid Controller SRCU41L User Manual
Glossary of Terms and Abbreviations A
Table 10. Glossary of Terms and Abbreviations
Term Definition
Active
Termination
BIOS
Configuration
Device Driver
Differential
SCSI
Domain
Validation
EEPROM
External SCSI
Device
Host
Host Adapter
Board (HAB)
Internal SCSI
Device
Main Memory
NVRAM
PCI and PCI-
X
Peripheral
Devices
The electrical connection required at each end of the SCSI bus, composed of active voltage
regulation and a set of termination resistors. Ultra SCSI, Ultra2 SCSI, Ultra160 SCSI, and
Ultra320 SCSI require active termination.
Basic Input/Output System. Software that provides basic read/write capability. Usually kept
as firmware (ROM based). The system BIOS on the mainboard of a computer is used to boot
and control the system. The SCSI BIOS on your host adapter acts as an extension of the
system BIOS.
Refers to the way a computer is setup; the combined hardware components (computer,
monitor, keyboard, and peripheral devices) that make up a computer system; or the software
settings that allow the hardware components to communicate with each other.
A program that allows a microprocessor (through the operating system) to direct the
operation of a peripheral device.
A hardware configuration for connecting SCSI devices. It uses a pair of lines for each signal
transfer (as opposed to Single-Ended SCSI which references each SCSI signal to a common
ground).
Domain Validation is a software procedure in which a host queries a device to determine its
ability to communicate at the negotiated Ultra320 data rate.
Electronically Erasable Programmable Read-Only Memory. A memory chip typically used to
store configuration information, as it provides stable storage for long periods without
electricity and can be reprogrammed. See NVRAM.
A SCSI device installed outside the computer cabinet. These devices are connected together
using specific types of shielded cables.
The computer system in which a storage adapter is installed. It uses the storage adapter to
transfer information to and from devices attached to the SCSI bus.
A circuit board or integrated circuit that provides a device connection to the computer
system.
A SCSI device installed inside the computer cabinet. These devices are connected together
using an unshielded ribbon cable.
The part of a computer’s memory which is directly accessible by the CPU (usually
synonymous with RAM).
Non-volatile Random Access Memory. Actually an EEPROM (Electronically Erasable ReadOnly Memory chip) used to store configuration information. See EEPROM.
Peripheral Component Interconnect. A high performance local bus specification that allows
connection of devices directly to computer memory. The PCI Local Bus allows transparent
upgrades from 32-bit data path at 33 MHz to 64-bit data path at 33 MHz, and from 32-bit data
path at 66 MHz to 64-bit data path at 66 MHz.
A piece of hardware (such as a video monitor, disk drive, printer, or CD-ROM) used with a
computer and under the computer’s control. SCSI peripherals are controlled through a SCSI
Shortened Product Name (host adapter).
Intel® Raid Controller SRCU41L User Manual 19
Glossary of Terms and Abbreviations
Table 10. Glossary of Terms and Abbreviations
Term Definition
A storage adapter (host adapter) and one or more SCSI peripherals connected by cables in a
SCSI Bus
SCSI Device
SCSI ID
Single-Ended
SCSI
TolerANT
Ultra SCSI
Ultra2 SCSI
Ultra160 SCSI
Ultra320 SCSI
VHDCI
linear configuration. The adapter may exist anywhere on the bus, allowing connection of both
internal and external SCSI devices. A system may have more than one SCSI bus by using a
multi-channel adapter or by using multiple adapters.
Any device that conforms to the SCSI standard and is attached to the SCSI bus by a SCSI
cable. This includes SCSI storage adapters (host adapters) and SCSI peripherals.
A way to uniquely identify each SCSI device on the SCSI bus. Each SCSI bus has eight
available SCSI IDs numbered 0 through 7 (or 0 through 15 for Wide SCSI). The storage
adapter (host adapter) usually gets the highest ID (7 or 15) giving it priority to control the bus.
A hardware specification for connecting SCSI devices. It references each SCSI signal to a
common ground. This is the most common method (as opposed to differential SCSI, which
uses a separate ground for each signal).
A technology developed and used by Intel to improve data integrity, data transfer rates, and
noise immunity through the use of active negation and input signal filtering.
A standard for SCSI data transfers. It allows a transfer rate of up to 20 Mbytes/s over an 8-bit
SCSI bus and up to 40 Mbytes/s over a 16-bit SCSI bus.
A standard for SCSI data transfers. It allows a transfer rate of up to 40 Mbytes/s over an 8-bit
SCSI bus, and up to 80 Mbytes/s over a 16-bit SCSI bus.
A standard for SCSI data transfers. It allows a transfer rate of up to 160 Mbytes/s over a 16bit SCSI bus.
A standard for SCSI data transfers. It allows a transfer rate of up to 320 Mbytes/s over a 16bit SCSI bus.
Very High-Density Cable Interconnect. This cable is used to connect external connectors to
your storage adapter.
20 Intel® Raid Controller SRCU41L User Manual
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