Ibm SSA 32H3816 Manuale Utente

COVER Book Cover -------------------------------------------------------------------------- IBM SSA RAID Adapterfor PC Servers Installation and Use

PREFACE.2 Related Publications Other manuals that you might find useful are:  SSA RAID Adapter: Maintenance Information, S32H-3817  SSA RAID A

1.0 Chapter 1. Introducing the SSA RAID AdapterThe IBM SSA RAID Adapter for PC Servers is a PCI bus-master adapter that serves as the interface betw

1.1 SSA SSA is a high-performance serial-interconnect technology used to connect I/O devices and host adapters. SSA is an open standard, and SSA s

1.2 The Adapter Card The adapter provides 4 SSA ports for the attachment of storage devices such as hard disk drives. Each port operates at 20 MB/s

1.3 RAID RAID (redundant array of independent disks) is the technology of grouping several hard disk drives into an array that is defined as a sing

1.4 Operating Systems The SSA RAID Adapter, its firmware, and the software supplied with it provide attachments of SSA devices to the following oper

1.5 Before Installing the Adapter This book is intended for a network administrator-that is, the person responsible for configuring, maintaining, ma

1.6 Installation Requirements To install this option, you will need the following:  The documentation that came with your serve  A small fla

2.0 Chapter 2. Installing an SSA RAID AdapterTo complete the installation, you must: 1. Install the adapter card 2. Connect the necessary SSA ca

2.1 Installing the Adapter Card Attention: Remove all power from your PC server and any attached devices before removing the cover. To install the

NOTICES Notices +--- Note! ----------------------------------------------------------+ ¦

2.2 Connecting the Disk Drives Each of the 2 pairs of SSA ports can attach up to 48 dual-port devices in a closed loop. Only one SSA adapter c

2.3 Configuring the Disk Drives Turn power on to the server unit and to the devices. Your system automatically performs the PCI configuration tasks

2.4 Installing an Operating System If an operating system is already loaded in your server, go to the next section, "Installing the Device Driv

2.5 Installing the Device Drivers and Utility Programs A README.TXT file on the SSA RAID Adapter diskette for your operating system provides detaile

2.6 Selecting Your Boot Device To boot from an SSA disk drive: during the boot process, if the message CBIOS disabled appears, press the tab key.

3.0 Chapter 3. Configuring SSA Subsystems Before new SSA disk drives can be used by the operating system, you must configure them into the SSA subs

3.1 Running the Configuration Utility To run the configuration utility, execute the following program:  For OS/2: ISSACFG  For Novell NetWare

3.2 Accepting New Disk Drives To accept new disk drives into the SSA subsystem: 1. From the SSA Main Menu, select New Disks. 2. A window opens c

3.3 Creating an Array This section describes how to create an array from the free disk drives in the SSA subsystem. It is recommended that you defi

Select the type of array to be created. You can scroll the contents of the window by using the arrow keys. 4. A list of the arrays of this type

EDITION Edition NoticeFirst Edition (September 1996) The following paragraph does not apply to any country where such provisions are inconsistent wi

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You can return to the Main Menu by repeatedly pressing Esc. The array created is in the free state. The next section describes how to attach t

3.4 Attaching Resources A resource is a disk drive that is to be accessed individually or an array of disk drives. Before attaching an array, ensur

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4.0 Chapter 4. Dealing with Disk-Array ProblemsThis chapter:  Provides general guidance on solving basic problems with your SSA subsyste  De

4.1 Basic Problems If the system cannot work with the adapter, check the following:  Is CMOS setup required to enable PCI bus parameters  Is

4.2 Array Problems Many problems within an array are not seen by the users of the server. The RAID-1 and RAID-5 functions provide a continuing serv

4.3 Changing Failed Disk Drives If you have one of the SRNs in the list above, you can change the disk drive using the following procedure: 1. Fro

 Define the new disk drive as a new hot spare, using the procedure described in "Defining a Hot Spare" in topic 5.1, or  Ex

5.0 Chapter 5. Performing Other Disk-Array TasksThis section describes some of the other uses of the SSA Configuration Utility. Other service-relat

CONTENTS Table of Contents COVER Book Cover NOTICES Notices EDITION Edition Notice CONTENTS Table of Contents FRONT_1

5.1 Defining a Hot Spare To define a disk drive as a hot spare: 1. From the Main Menu screen, select SSA Adapter List. 2. The SSA Adapter List wi

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5.2 Viewing the Physical Configuration From the SSA Main Menu, select SSA Adapter List and then Disk Service Aids. A window opens showing the physi

5.3 Viewing Resources and Their Attributes From the SSA Main Menu, select System Resources and then the resource you want to view. If you select an

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5.4 Changing Array Attributes To change one or more of the attributes of an existing array: 1. From the SSA Main Menu, select SSA Adapter List 2.

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5.5 Exchanging a Member of an Array To exchange a member of an array with another disk drive: 1. From the SSA Main Menu, select System Resources a

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5.6 Deleting an Array Before deleting an array, delete any operating-system-partition definitions that affect the array. There are two steps to be

FRONT_1 Safety Information SSA RAID Adapter Installation and User's Guide.Safety Information_ Copyright IBM Corp. 1996FRONT_1 - 1

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6.0 Chapter 6. Getting the Latest Information For the latest device drivers, firmware, and utility programs, call the IBM PC Company Bulletin Board

A.0 Appendix A. Multiple-Adapter InstallationsThe following limitations apply to servers with multiple SSA RAID Adapters:  Up to two SSA RAID Ad

B.0 Appendix B. SSA RAID Adapter Service Request Numbers"Array Problems" in topic 4.2 describes how errors are reported and logged for the

¦ ¦ failed. ¦ ¦ +---------+-------------------------------+------------------------------¦

¦ 47500 ¦ Part of the RAID array data ¦ Call for service ¦ ¦ ¦ might have been lost. ¦ ¦

¦ ¦ ¦ service ¦ +---------+-------------------------------+------------------------------¦

B.1 SSA Loop Configurations that Are Not Valid Note: This section is related to SRN 48000. SRN 48000 shows that the SSA loop contains more devices

C.0 Appendix C. Introducing SSA and RAIDThis chapter describes:  Serial storage architecture (SSA  The RAID functions that are provided by t

C.1 Serial Storage Architecture (SSA) Serial Storage Architecture (SSA) is an industry-standard interface that provides high-performance fault-toler

SSA RAID Adapter Installation and User's Guide.Safety Information_ Copyright IBM Corp. 1996FRONT_1 - 2

C.1.1 SSA Loops and Links In the simplest SSA configuration, SSA devices are connected through two or more SSA links to an SSA adapter that is locat

C.1.1.1 Loops and Data Paths All devices that are attached to an SSA adapter card 1 are connected through SSA links 2 . The SSA links are config

If two or more disk drives are turned off, fail, or are removed from the loop, some disk drives might become isolated from the SSA adapter. In

SSA RAID Adapter Installation and User's Guide.Loops and Data Paths_ Copyright IBM Corp. 1996C.1.1.1 - 3

C.1.2 Rules for SSA Loops For SSA loops that include the SSA RAID Adapter, the following rules apply:  Each SSA loop must be connected to a vali

C.2 RAID Functions Redundant Array of Independent Disks (RAID) technology gives you:  Larger disk capacit  Immediate availability and, depend

C.2.1 RAID-0 RAID-0 is also known as striping, it does not provide redundancy and, therefore, cannot survive the failure of a member. It does prov

C.2.2 RAID-1 RAID-1 is also known as mirroring or dual copy. It provides redundancy with better performance than a single disk, but requires real

C.2.3 RAID-5 RAID-5 arrays write strips of data across all but one member of the array. Parity for the other strips is written on the last member.

C.2.4 Hot Spares A hot-spare disk drive is a disk drive that is defined for automatic use if a disk drive within an array fails. The hot-spare must

CAUTION: A lithium battery can cause fire, explosion, or a severe burn. Do not recharge, disassemble, heat above 100°C (212°F), solder directly

C.2.5 Disk Array States A disk array can be in one of several states. Those states are described here. Subtopics C.2.5.1 Good State C.2.5.2 Expos

C.2.5.1 Good State A disk array is in the Good state when all the member disk drives of that disk array are present and functioning correctly.SSA RA

C.2.5.2 Exposed State A disk array enters the Exposed state when a member disk drive becomes missing (logically or physically) from that array. Whe

C.2.5.3 Degraded State A disk array enters the Degraded state if, while in the Exposed state, it receives a write command. If a hot spare disk driv

C.2.5.4 Rebuilding State A disk array enters Rebuilding state after a missing disk has been replaced. When the disk array is in this state, all the

C.2.5.5 Offline State A disk array enters Offline state when two or more disk drives become missing. Read and write operations are not allowed.SSA

D.0 Appendix D. Product Warranty and Notices International Business Machines Corporation Armonk, New York, 10504 Subtopics D.1 Statement

D.1 Statement of Limited Warranty The warranties provided by IBM in this Statement of Limited Warranty apply only to Machines you originally purchas

D.1.1 Production Status Each Machine is manufactured from new parts, or new and serviceable used parts (which perform like new parts). In some case

D.1.2 The IBM Warranty IBM warrants that each Machine 1) is free from defects in materials and workmanship and 2) conforms to IBM's Official Pu

PREFACE About This BookThis book is intended for a network administrator-that is, the individual responsible for configuring, maintaining, managing,

D.1.3 Warranty Service To obtain warranty service for the Machine, you should contact your reseller or call IBM. In the United States, call IBM at

D.1.4 Extent of Warranty IBM does not warrant uninterrupted or error-free operation of a Machine. Misuse, accident, modification, unsuitable physic

D.1.5 Limitation of Liability Circumstances may arise where, because of a default on IBM's part (including fundamental breach) or other liabili

D.2 Notices References in this book to IBM products, programs, or services do not imply that IBM intends to make these available in all countries i

D.3 Trademarks The following terms are trademarks of IBM Corporation in the United States or other countries or both: IBM

D.4 Communications Statements The following statements apply to this product. The statements for other products intended for use with this product

D.4.1 Federal Communications Commission (FCC) Statement Note: This equipment has been tested and found to comply with the limits for a Class A digi

D.4.2 VCCI Statement The following is a summary of the VCCI Japanese statement in the box above. +------------------------------------------------

D.4.3 International Electrotechnical Commission (IEC) Statement This product has been designed and built to comply with (IEC) Standard 950.SSA RAID

D.4.4 Avis de conformité aux normes de l'Industrie Canada Cet appareil numérique de la classe A respecte toutes les exigences du Règlement sur

PREFACE.1 How This Book Is Organized. Chapter 1, "Introducing the SSA RAID Adapter" in topic 1.0 describes the adapter, what is provided w

D.4.5 Industry Canada Compliance Statement This Class A digital apparatus meets the requirements of the Canadian Interference-Causing Equipment Regu

D.4.6 United Kingdom Telecommunications Requirements This apparatus is manufactured to the International Safety Standard EN60950 and as such is appr

D.4.7 EC Council Directive This product is in conformity with the requirements of the following EC directives:  Council Directive 73/23/EEC on t

D.4.8 Radio Protection for Germany Dieses Gerät ist berechtigt in Übereinstimmung mit dem deutschen EMVG vom 9.Nov. das EG-Konformitätszeichen zu f

A access failure checks 4.1 adapter card description 1.2 installing 2.1 lights 1.2 array attaching 3.4 attributes changing 5.4

I information, latest 6.0 information, more 6.0 installing adapter card 2.1 device drivers 2.5 operating systems 2.4 utility programs 2.5 L