LSI Series 518 manual

® MegaRAID ® SCSI 320-2 RAID Controller HARD W ARE GUIDE November 2002[...]

ii Copyright © 2002 by LSI Logic Corporation. All rights reserved. This document contains proprietar y inf ormation of LSI Logic Cor poration. The inf ormation contained herein is not to be used by or disclosed to third parties without the e xpress written per mission of an officer of LSI Logic Cor por ation. LSI Logic products are not intended f[...]

iii Copyright © 2002 by LSI Logic Corporation. All rights reserved. FCC Regulatory Statement This de vice complies with Part 15 of the FCC Rules. Operation is subject to the f ollowing two conditions: (1) this de vice may not cause harmful interference , and (2) this de vice must accept any interference receiv ed, including interference that ma y [...]

iv Copyright © 2002 by LSI Logic Corporation. All rights reserved.[...]

MegaRAID SCSI 320-2 Hardware Guide v Copyright © 2002 by LSI Logic Corporation. All rights reserved. Preface This book is the primar y ref erence and Hardware Guide for the LSI Logic MegaRAID ® SCSI 320-2 Controller . It contains instructions for installing the MegaRAID controller and f or configur ing RAID arra ys. It also contains backg round [...]

vi Pref ace Copyright © 2002 by LSI Logic Corporation. All rights reserved. • Chapter 6, Hardware Installation , e xplains how to install the MegaRAID SCSI 320-2 controller . • Chapter 7, Installing and Configuring Clusters , e xplains how to implement clustering to enable two independent servers to access the same shared data storage . • C[...]

Pref ace vii Copyright © 2002 by LSI Logic Corporation. All rights reserved. System Information Motherboard: BIOS manuf acturer : Operating System: BIOS Date: Op . Sys. V er .: Video Adapter : MegaRAID Driver V er .: CPU T ype/Speed: Network Card: System Memor y: Other disk controllers installed: Other adapter cards Installed: Description of probl[...]

viii Pref ace Copyright © 2002 by LSI Logic Corporation. All rights reserved. Logical Drive Configuration Use this f or m to record the configuration details f or your logical drives. Logical Drive Configuration Logical Drive RAID Level Stripe Size Logical Drive Size Cache P olicy Read P olicy Write P olicy # of Physical Drives LD0 LD1 LD2 LD3 [...]

Pref ace ix Copyright © 2002 by LSI Logic Corporation. All rights reserved. LD22 LD23 LD24 LD25 LD26 LD27 LD28 LD29 LD30 LD31 LD32 LD33 LD34 LD35 LD36 LD37 LD38 LD39 Logical Drive Configuration (Cont.) Logical Drive RAID Level Stripe Size Logical Drive Size Cache P olicy Read P olicy Write P olicy # of Physical Drives[...]

x Pref ace Copyright © 2002 by LSI Logic Corporation. All rights reserved. Physical De vice Lay out Use this f or m to record the physical de vice la yout. Physical De vice Lay out Channel 0 Channel 1 T arget ID De vice type Logical drive number/Drive n umber Manuf acturer/Model number Firmware lev el T arget ID De vice type Logical drive number/D[...]

Pref ace xi Copyright © 2002 by LSI Logic Corporation. All rights reserved. Logical drive number/Drive n umber Manuf acturer/Model number Firmware lev el T arget ID De vice type Logical drive number/Drive n umber Manuf acturer/Model number Firmware lev el T arget ID De vice type Logical drive number/Drive n umber Manuf acturer/Model number Firmwar[...]

xii Pref ace Copyright © 2002 by LSI Logic Corporation. All rights reserved. Logical drive number/Drive n umber Manuf acturer/Model number Firmware lev el T arget ID De vice type Logical drive number/Drive n umber Manuf acturer/Model number Firmware lev el T arget ID De vice type Logical drive number/Drive n umber Manuf acturer/Model number Firmwa[...]

Pref ace xiii Copyright © 2002 by LSI Logic Corporation. All rights reserved. T arget ID De vice type Logical drive number/Drive n umber Manuf acturer/Model number Firmware lev el Physical De vice Lay out (Cont.) Channel 0 Channel 1[...]

xiv Pref ace Copyright © 2002 by LSI Logic Corporation. All rights reserved.[...]

MegaRAID SCSI 320-2 Hardware Guide xv Copyright © 2002 by LSI Logic Corporation. All rights reserved. Contents Chapter 1 Overview 1.1 SCSI Channels 1-1 1.2 NVRAM and Flash ROM 1-2 1.3 SCSI Connectors 1-2 1.4 Single-Ended and Diff erential SCSI Buses 1-2 1.5 Maximum Cab le Length f or SCSI Standards 1-2 1.6 SCSI Bus Widths and Maximum Throughput 1-[...]

xvi Contents Copyright © 2002 by LSI Logic Corporation. All rights reserved. 2.3.7 Disk Spanning 2-7 2.3.8 P ar ity 2-8 2.3.9 Hot Spares 2-8 2.3.10 Hot Swapping 2-9 2.3.11 Disk Rebuild 2-9 2.3.12 Logical Drive States 2-10 2.3.13 SCSI Drive States 2-10 2.3.14 Disk Arra y T ypes 2-11 2.3.15 Enclosure Management 2-11 Chapter 3 RAID Levels 3.1 Selecti[...]

Contents xvii Copyright © 2002 by LSI Logic Corporation. All rights reserved. 4.10.7 SCSI Connectors 4-10 4.10.8 SCSI T er mination 4-10 4.10.9 SCSI Fir mw are 4-10 4.11 RAID Management 4-11 4.11.1 MegaRAID BIOS Configuration Utility 4-11 4.11.2 W ebBIOS Configuration Utility 4-11 4.11.3 P ower Console Plus 4-12 4.11.4 MegaRAID Manager 4-12 4.12[...]

xviii Contents Copyright © 2002 by LSI Logic Corporation. All rights reserved. 6.2.1 Step 1: Unpack 6-3 6.2.2 Step 2: P ower Do wn 6-3 6.2.3 Step 3: Install Cache Memor y 6-4 6.2.4 Step 4: Check J umper Settings 6-5 6.2.5 Step 5: Set T er mination 6-8 6.2.6 Step 6 Set SCSI T er minator P ower 6-13 6.2.7 Step 7: Install Batter y P ack (Optional) 6-[...]

Contents xix Copyright © 2002 by LSI Logic Corporation. All rights reserved. 7.4.13 V erifying Disk Access and Functionality 7-15 7.4.14 Installing Cluster Ser vice Softw are 7-16 7.4.15 Configuring Cluster Disks 7-18 7.4.16 V alidating the Cluster Installation 7-25 7.4.17 Configuring the Second Node 7-25 7.4.18 V erifying Installation 7-26 7.5 [...]

xx Contents Copyright © 2002 by LSI Logic Corporation. All rights reserved. Index Customer Feedback[...]

MegaRAID SCSI 320-2 Hardware Guide 1-1 Copyright © 2002 by LSI Logic Corporation. All rights reserved. Chapter 1 Overview This chapter provides an o ver vie w of the MegaRAID ® SCSI 320-2 controller . It contains the f ollowing sections: • Section 1.1, “SCSI Channels” • Section 1.2, “NVRAM and Flash ROM” • Section 1.3, “SCSI Conne[...]

1-2 Overview Copyright © 2002 by LSI Logic Corporation. All rights reserved. 1.2 NVRAM and Flash ROM A 32 KB x 8 NVRAM stores RAID system configuration inf or mation. The MegaRAID SCSI 320-2 fir mw are is stored in flash ROM for easy upgrade . 1.3 SCSI Connectors The MegaRAID SCSI 320-2 has two ultra high-density 68-pin e xter nal SCSI connecto[...]

SCSI Bus Widths and Maximum Throughput 1-3 Copyright © 2002 by LSI Logic Corporation. All rights reserved. 1.6 SCSI Bus Widths and Maximum Thr oughput T able 1.2 lists the SCSI bus widths and maxim um throughput, based on the SCSI speeds. 1.7 Documentation The MegaRAID SCSI 320-2 documentation set includes: • The MegaRAID SCSI 320-2 Hardware Gui[...]

1-4 Overview Copyright © 2002 by LSI Logic Corporation. All rights reserved. 1.7.1 MegaRAID SCSI 320-2 Hard ware Guide The Hardware Guide contains the RAID o ver vie w , RAID planning, and RAID system configuration inf or mation you need first. Read this document first. 1.7.2 MegaRAID Configuration Software Guide This manual describes the soft[...]

MegaRAID SCSI 320-2 Hardware Guide 2-1 Copyright © 2002 by LSI Logic Corporation. All rights reserved. Chapter 2 Intr oduction to RAID This chapter introduces impor tant RAID concepts. It contains the f ollowing sections: • Section 2.1, “RAID Benefits” • Section 2.2, “MegaRAID SCSI 320-2 – Host-Based RAID Solution” • Section 2.3, [...]

2-2 Introduction to RAID Copyright © 2002 by LSI Logic Corporation. All rights reserved. 2.1.2 Increased Reliability The electromechanical components of a disk subsystem operate more slowly , require more power , and generate more noise and vibration than electronic de vices. These factors reduce the reliability of data stored on disks. RAID pro v[...]

RAID Overview 2-3 Copyright © 2002 by LSI Logic Corporation. All rights reserved. 2.2.2 SCSI-to-SCSI External RAID A SCSI-to-SCSI e xter nal RAID product puts the RAID intelligence inside the RAID chassis and uses a plain SCSI host adapter installed in the network ser v er . The data transfer r ate is limited to the bandwidth of the SCSI channel. [...]

2-4 Introduction to RAID Copyright © 2002 by LSI Logic Corporation. All rights reserved. • A combination of any two of the abo ve conditions 2.3.3 Consistency Chec k A consistency check v erifies the correctness of redundant data in a RAID arra y . F or example , in a system with distributed parity , chec king consistency means computing the pa[...]

RAID Overview 2-5 Copyright © 2002 by LSI Logic Corporation. All rights reserved. Figure 2.1 Disk Striping Disk striping inv olves par titioning each disk drive’ s storage space into stripes that can vary in size from 2 to 128 Kbytes . These stripes are interleav ed in a repeated, sequential manner . The combined storage space is composed of str[...]

2-6 Introduction to RAID Copyright © 2002 by LSI Logic Corporation. All rights reserved. 2.3.5.2 Stripe Size The stripe size is the length of the interleav ed data segments that MegaRAID SCSI 320-2 writes across multiple drives. MegaRAID SCSI 320-2 suppor ts stripe sizes of 2, 4, 8, 16, 32, 64, or 128 Kbytes . 2.3.6 Disk Mirroring With disk mirror[...]

RAID Overview 2-7 Copyright © 2002 by LSI Logic Corporation. All rights reserved. 2.3.7 Disk Spanning Disk spanning allows multiple disk driv es to function like one big drive. Spanning ov ercomes lack of disk space and simplifies storage management by combining e xisting resources or adding relatively ine xpensive resources. F or e xample, f our[...]

2-8 Introduction to RAID Copyright © 2002 by LSI Logic Corporation. All rights reserved. T able 2.1 describes how disk spanning is used f or RAID 10 and RAID 50. Note: Spanning two contiguous RAID 0 logical drives does not produce a new RAID le vel or add f ault tolerance. It does increase the size of the logical v olume and improves perf or mance[...]

RAID Overview 2-9 Copyright © 2002 by LSI Logic Corporation. All rights reserved. has a capacity closest to and at least as great as that of the f ailed dr iv e to take the place of the f ailed drive. Note: Hot spares are used only in arra ys with redundancy—for e xample, RAID lev els 1, 5, 10, and 50. A hot spare connected to a specific MegaRA[...]

2-10 Introduction to RAID Copyright © 2002 by LSI Logic Corporation. All rights reserved. totally dedicated to rebuilding the f ailed drive . The MegaRAID SCSI 320- 2 rebuild r ate can be configured between 0% and 100%. At 0%, the rebuild is only done if the system is not doing an ything else. At 100%, the rebuild has a higher priority than any o[...]

RAID Overview 2-11 Copyright © 2002 by LSI Logic Corporation. All rights reserved. 2.3.14 Disk Array T ypes T able 2.4 describes the RAID disk arra y types. 2.3.15 Enclosure Mana g ement Enclosure management is the intelligent monitoring of the disk subsystem by softw are and/or hardware. The disk subsystem can be par t of the host computer or can[...]

2-12 Introduction to RAID Copyright © 2002 by LSI Logic Corporation. All rights reserved.[...]

MegaRAID SCSI 320-2 Hardware Guide 3-1 Copyright © 2002 by LSI Logic Corporation. All rights reserved. Chapter 3 RAID Le vels This chapter describes each suppor ted RAID lev el and the factors to consider when choosing a RAID le vel. It contains the f ollowing sections: • Section 3.1, “Selecting a RAID Le vel” • Section 3.2, “RAID 0” ?[...]

3-2 RAID Le vels Copyright © 2002 by LSI Logic Corporation. All rights reserved. 3.2 RAID 0 RAID 0 provides disk striping across all drives in the RAID subsystem. RAID 0 does not provide an y data redundancy , but does off er the best perf or mance of any RAID le vel. RAID 0 breaks up data into smaller bloc ks and then wr ites a b lock to each dri[...]

RAID 1 3-3 Copyright © 2002 by LSI Logic Corporation. All rights reserved. Figure 3.1 RAID 0 Array 3.3 RAID 1 In RAID 1, the MegaRAID SCSI 320-2 duplicates all data from one drive to a second drive. RAID 1 pro vides complete data redundancy , but at the cost of doubling the required data stor age capacity . Figure 3.2 shows a RAID 1 arra y . Segme[...]

3-4 RAID Le vels Copyright © 2002 by LSI Logic Corporation. All rights reserved. Figure 3.2 RAID 1 Array 3.4 RAID 5 RAID 5 includes disk striping at the byte le vel and parity . In RAID 5, the parity information is wr itten to se ver al drives . RAID 5 is best suited f or networks that perform many small I/O transactions sim ultaneously . RAID 5 a[...]

RAID 5 3-5 Copyright © 2002 by LSI Logic Corporation. All rights reserved. e xclusive-or assist make RAID 5 perf or mance e xceptional in many diff erent environments. Figure 3.3 shows a RAID 5 arra y with six disk dr iv es. Figure 3.3 RAID 5 Array Uses Provides high data throughput, especially f or large files. Use RAID 5 for tr ansaction proces[...]

3-6 RAID Le vels Copyright © 2002 by LSI Logic Corporation. All rights reserved. 3.5 RAID 10 RAID 10 is a combination of RAID 0 and RAID 1. RAID 10 has mirrored drives. RAID 10 breaks up data into smaller bloc ks, and then stripes the bloc ks of data to each RAID 1 RAID set. Each RAID 1 RAID set then duplicates its data to its other drive . The si[...]

RAID 50 3-7 Copyright © 2002 by LSI Logic Corporation. All rights reserved. Figure 3.4 RAID 10 Array 3.6 RAID 50 RAID 50 provides the f eatures of both RAID 0 and RAID 5, including both parity and disk str iping across multiple driv es. RAID 50 is best implemented on two RAID 5 disk arra ys with data striped across both disk arra ys. RAID 50 break[...]

3-8 RAID Le vels Copyright © 2002 by LSI Logic Corporation. All rights reserved. RAID 50 can sustain one to f our drive f ailures while maintaining data integrity , if each f ailed disk is in a different RAID 5 arr ay . Figure 3.5 shows a RAID 50 arra y with six disk dr iv es. Figure 3.5 RAID 50 Array Uses W orks best when used with data that requ[...]

MegaRAID SCSI 320-2 Hardware Guide 4-1 Copyright © 2002 by LSI Logic Corporation. All rights reserved. Chapter 4 Features This chapter e xplains the features of the MegaRAID SCSI 320-2. It contains the f ollowing sections: • Section 4.1, “SMAR T T echnology” • Section 4.2, “Configuration on Disk” • Section 4.3, “Configuration F e[...]

4-2 F eatures Copyright © 2002 by LSI Logic Corporation. All rights reserved. • SCSI data transf ers up to 320 Mbytes/s • Synchronous operation on a wide L VD SCSI bus • Up to 15 L VD SCSI devices on each of the Wide b uses • Up to 256 Mbytes of 3.3 V PC100 (or f aster) SDRAM cache memor y in one single-sided or double-sided DIMM soc ket ([...]

SMAR T T echnology 4-3 Copyright © 2002 by LSI Logic Corporation. All rights reserved. 4.1 SMART T echnology The MegaRAID Self Monitoring Analysis and Repor ting T echnology (SMAR T) feature detects up to 70% of all predictab le dr iv e failures. SMAR T monitors the inter nal performance of all motors, heads , and drive electronics. Y ou can recov[...]

4-4 F eatures Copyright © 2002 by LSI Logic Corporation. All rights reserved. Multiple logical drives/arra ys per controller Up to 40 logical drives per controller Maximum number of MegaRAID controllers per system 12 Online capacity e xpansion Y es Hot spare suppor t Y es Flashable firmware Y es Hot s wap de vices suppor ted Y es Non-disk de vice[...]

Arra y P erformance Features 4-5 Copyright © 2002 by LSI Logic Corporation. All rights reserved. 4.4 Array P erformance Features T able 4.2 lists the arra y performance f eatures. 4.5 RAID Management Features T able 4.3 lists the RAID management f eatures. T able 4.2 Array P erformance Features Specification Feature Host data transf er rate 532 M[...]

4-6 F eatures Copyright © 2002 by LSI Logic Corporation. All rights reserved. 4.6 Fault T olerance Features T able 4.4 lists the f ault tolerance f eatures. 4.7 Software Utilities T able 4.5 lists the softw are utility f eatures. T able 4.4 Fault T olerance Features Specification Feature Suppor t f or SMART Y es Optional batter y bac kup for cach[...]

Operating System Software Driv ers 4-7 Copyright © 2002 by LSI Logic Corporation. All rights reserved. 4.8 Operating System Software Drivers MegaRAID SCSI 320-2 includes a DOS software configur ation utility , and drivers f or : • Windows NT 4.0 • Windows 2000 • Windows .NET • Windows XP • Nov ell NetW are 5.1, 6.0 • Red Hat Linux 7.2[...]

4-8 F eatures Copyright © 2002 by LSI Logic Corporation. All rights reserved. 4.10 MegaRAID Components 4.10.1 CPU The MegaRAID SCSI 320-2 controller uses the 64-bit Intel 80303 Intelligent I/O processor with an embedded 32-bit 80960 Jx RISC processor that runs at 100 MHz. This processor directs all functions of the controller including command pro[...]

MegaRAID Components 4-9 Copyright © 2002 by LSI Logic Corporation. All rights reserved. transf ers, RAID processing, drive reb uilding, cache management, and error recov er y . 4.10.2 Cache Memory Cache memor y resides in a single 72-bit DIMM soc ket that requires one unbuff ered 3.3 V SDRAM single-sided or double-sided DIMM. P ossible configurat[...]

4-10 F eatures Copyright © 2002 by LSI Logic Corporation. All rights reserved. 4.10.6 SCSI Bus The MegaRAID SCSI 320-2 controller has two Ultra320 Wide SCSI channels that suppor t low v oltage differential SCSI de vices with active termination. Both synchronous and asynchronous de vices are suppor ted. The MegaRAID controller provides automatic te[...]

RAID Management 4-11 Copyright © 2002 by LSI Logic Corporation. All rights reserved. 4.11 RAID Management RAID management is provided b y software utilities that manage and configure the RAID system and MegaRAID SCSI 320-2, create and manage multiple disk arra ys, control and monitor multiple RAID servers , provide error statistics logging, and p[...]

4-12 F eatures Copyright © 2002 by LSI Logic Corporation. All rights reserved. 4.11.3 P ower Console Plus P ower Console Plus runs in Windows NT , 2000, XP , and .NET . It configures, monitors , and maintains multiple RAID ser vers from an y network node or a remote location. See the MegaRAID Configuration Software Guide f or additional informat[...]

MegaRAID SCSI 320-2 Hardware Guide 5-1 Copyright © 2002 by LSI Logic Corporation. All rights reserved. Chapter 5 Configuring Ph ysical Drives, Arra ys, and Logical Drives This chapter e xplains how to configure SCSI physical driv es, arra ys, and logical drives connected to the MegaRAID SCSI 320-2 controller . It contains the f ollowing sections[...]

5-2 Configuring Physical Driv es, Arra ys, and Logical Drives Copyright © 2002 by LSI Logic Corporation. All rights reserved. 5.1.2 Basic Configuration Rules Y ou should obser ve the f ollowing guidelines when connecting and configuring SCSI devices in a RAID arra y: • Attach non-disk SCSI de vices to a single SCSI channel that does not hav e[...]

Configuring SCSI Physical Drives 5-3 Copyright © 2002 by LSI Logic Corporation. All rights reserved. 4 5 6 8 9 10 11 12 13 14 15 SCSI Channel 1 0 1 2 3 4 5 6 8 9 10 11 12 13 T able 5.1 Physical Device Configuration (Cont.) SCSI ID Device Description T ermination?[...]

5-4 Configuring Physical Driv es, Arra ys, and Logical Drives Copyright © 2002 by LSI Logic Corporation. All rights reserved. 5.1.4 Logical Drive Configuration Use T able 5.2 to record the configuration f or your logical drives . 14 15 T able 5.1 Physical Device Configuration (Cont.) SCSI ID Device Description T ermination? T able 5.2 Logical [...]

Configuring SCSI Physical Drives 5-5 Copyright © 2002 by LSI Logic Corporation. All rights reserved. LD17 LD18 LD19 LD20 LD21 LD22 LD23 LD24 LD25 LD26 LD27 LD28 LD29 LD30 LD31 LD32 LD33 LD34 LD35 LD36 LD37 LD38 LD39 T able 5.2 Logical Drive Configuration (Cont.) Logical Drive RAID Level Stripe Size Logical Drive Size Cache P olicy Read P olicy W[...]

5-6 Configuring Physical Driv es, Arra ys, and Logical Drives Copyright © 2002 by LSI Logic Corporation. All rights reserved. 5.1.5 Physical De vice Lay out Use T able 5.3 to record the ph ysical device la yout. T able 5.3 Physical Device La yout Channel 0 Channel 1 T arget ID De vice type Logical drive number/Drive n umber Manuf acturer/Model nu[...]

Configuring SCSI Physical Drives 5-7 Copyright © 2002 by LSI Logic Corporation. All rights reserved. Manuf acturer/Model number Firmware lev el T arget ID De vice type Logical drive number/Drive n umber Manuf acturer/Model number Firmware lev el T arget ID De vice type Logical drive number/Drive n umber Manuf acturer/Model number Firmware lev el [...]

5-8 Configuring Physical Driv es, Arra ys, and Logical Drives Copyright © 2002 by LSI Logic Corporation. All rights reserved. Manuf acturer/Model number Firmware lev el T arget ID De vice type Logical drive number/Drive n umber Manuf acturer/Model number Firmware lev el T arget ID De vice type Logical drive number/Drive n umber Manuf acturer/Mode[...]

Configuring Arrays 5-9 Copyright © 2002 by LSI Logic Corporation. All rights reserved. 5.2 Configuring Arrays Connect the ph ysical dr iv es to the MegaRAID SCSI 320-2, configure the drives, then initializ e them. The number of ph ysical disk dr iv es that an arra y can suppor t depends on the fir mware v ersion. F or the MegaRAID SCSI 320-2, [...]

5-10 Configuring Physical Drives , Arrays , and Logical Dr iv es Copyright © 2002 by LSI Logic Corporation. All rights reserved. 5.2.2 Creating Hot Spares Any driv e that is present, f or matted, and initialized, b ut is not included in a arra y or logical dr iv e is automatically designated as a hot spare. Y ou can also designate dr iv es as hot[...]

Creating Logical Drives 5-11 Copyright © 2002 by LSI Logic Corporation. All rights reserved. assumed. T able 5.4 describes the RAID lev els, including the number of drives required, and the capacity . 5.3.1.2 Maximizing Drive A vailability Y ou can maximize the av ailability of data on the physical disk driv e in the logical arra y by maximizing t[...]

5-12 Configuring Physical Drives , Arrays , and Logical Dr iv es Copyright © 2002 by LSI Logic Corporation. All rights reserved. 5.3.1.3 Maximizing Drive P erformance Y ou can configure an array f or optimal perf or mance. But optimal drive configuration f or one type of application will probably not be optimal f or any other application. T abl[...]

Configuring Logical Dr iv es 5-13 Copyright © 2002 by LSI Logic Corporation. All rights reserved. 5.4 Configuring Logical Drives After you ha ve installed the MegaRAID SCSI 320-2 controller in the ser v er and hav e attached all ph ysical disk dr iv es, perform the follo wing actions to prepare a RAID arra y: 1. Optimize the MegaRAID SCSI 320-2 [...]

5-14 Configuring Physical Drives , Arrays , and Logical Dr iv es Copyright © 2002 by LSI Logic Corporation. All rights reserved. must be a vailable 24 hours per da y? Will the inf ormation stored in this disk arra y contain large audio or video files that must be av ailable on demand? Will this disk arra y contain data from an imaging system? Y [...]

Planning the Arra y Configuration 5-15 Copyright © 2002 by LSI Logic Corporation. All rights reserved. Use T able 5.9 to plan the arra y configuration. T able 5.9 Array Configuration Planner # of Drives P ossible RAID Levels Relative P erformance F ault T olerance Effective Capacity 1 RAID 0 Excellent No 100% 2 RAID 0 Excellent No 100% 2 RAID 1[...]

5-16 Configuring Physical Drives , Arrays , and Logical Dr iv es Copyright © 2002 by LSI Logic Corporation. All rights reserved.[...]

MegaRAID SCSI 320-2 Hardware Guide 6-1 Copyright © 2002 by LSI Logic Corporation. All rights reserved. Chapter 6 Har dware Installation This chapter e xplains how to install the MegaRAID SCSI 320-2 controller . It contains the f ollowing sections: • Section 6.1, “Hardware Requirements” • Section 6.2, “Installation Steps” • Section 6.[...]

6-2 Hardware Installation Copyright © 2002 by LSI Logic Corporation. All rights reserved. 6.1.1 Optional Equipment Y ou may also w ant to install SCSI cables that interconnect the MegaRAID SCSI 320-2 to e xter nal SCSI devices . 6.2 Installation Steps The MegaRAID SCSI 320-2 provides e xtensive customization options . If you need only basic MegaRA[...]

Installation Steps 6-3 Copyright © 2002 by LSI Logic Corporation. All rights reserved. 6.2.1 Step 1: Unpack Unpack and install the hardw are in a static-free environment. Remov e the MegaRAID SCSI 320-2 controller card from the anti-static bag and inspect it f or damage. If the card appears damaged, or if any item listed below is missing, contact [...]

6-4 Hardware Installation Copyright © 2002 by LSI Logic Corporation. All rights reserved. 6.2.3 Step 3: Install Cache Memory Impor tant: A minimum of 32 Mb ytes of cache memor y is required. The cache memor y must be installed bef ore the MegaRAID controller is operational. Install cache memor y DIMMs on the MegaRAID controller card in the cache m[...]

Installation Steps 6-5 Copyright © 2002 by LSI Logic Corporation. All rights reserved. 6. Y ou can now add or remov e DRAM modules from the MegaRAID controller , as described above . 7. Reattach the batter y pac k har ness to J10 on the MegaRAID controller . 8. Reinstall the MegaRAID controller in the computer . Follo w the instructions in this ch[...]

6-6 Hardware Installation Copyright © 2002 by LSI Logic Corporation. All rights reserved. Figure 6.2 MegaRAID SCSI 320-2 Controller La yout 6.2.4.1 J2 SCSI Activity LED J2 is a f our-pin connector that attaches to a cable that connects to the hard disk LED mounted on the computer enclosure. The LED indicates data transf ers (SCSI bus activity .) 6[...]

Installation Steps 6-7 Copyright © 2002 by LSI Logic Corporation. All rights reserved. settings. Lea ve at the def ault setting (jumper on pins 1 and 2) to allow the MegaRAID controller to automatically set its own SCSI termination. 6.2.4.4 J10 Battery Pac k Connector J10 is a 3-pin connector that attaches to the optional batter y pac k. T able 6.[...]

6-8 Hardware Installation Copyright © 2002 by LSI Logic Corporation. All rights reserved. 6.2.4.6 J17/J18 SCSI Bus T ermination Po wer J17 and J18 are 2-pin jumpers that control the termination power setting f or channel 0 and channel 1, respectively . Leave both jumpers at the def ault setting (jumper installed on pins 1 and 2) to allow the PCI b[...]

Installation Steps 6-9 Copyright © 2002 by LSI Logic Corporation. All rights reserved. Figure 6.3 T ermination of Internal SCSI Disk Arrays 6.2.5.3 T erminating External Disk Arrays In most arra y enclosures, the end of the SCSI cable has an independent SCSI ter minator module that is not par t of an y SCSI dr iv e. In this wa y , MegaRAID SCSI 32[...]

6-10 Hardware Installation Copyright © 2002 by LSI Logic Corporation. All rights reserved. SCSI ter mination is not disturbed when an y dr iv e is removed, as sho wn in Figure 6.4 : Figure 6.4 T erminating External Disk Arrays 6.2.5.4 T erminating Internal and External Disk Arrays Y ou can use both inter nal and e xter nal drives with the MegaRAID[...]

Installation Steps 6-11 Copyright © 2002 by LSI Logic Corporation. All rights reserved. Figure 6.5 T erminating Internal and External Disk Arrays MegaRAID 320-2 Host Computer T er minator ID2 ID0 – Boot Drive No T er mination ID1 – No T er mination ID 0 ID 1 ID 2 ID 3 ID 4 ID 5 ID 6* External SCSI Drives Note: *T er mination enabled from last [...]

6-12 Hardware Installation Copyright © 2002 by LSI Logic Corporation. All rights reserved. 6.2.5.5 Connecting Non-Disk SCSI Devices SCSI tape drives and SCSI CD-R OM dr iv es must each ha ve a unique SCSI ID regardless of the SCSI channel they are attached to . The general rule for Unix systems is: • T ape drive set to SCSI ID 2 • CD-ROM driv [...]

Installation Steps 6-13 Copyright © 2002 by LSI Logic Corporation. All rights reserved. 6.2.6 Step 6 Set SCSI T erminator P ower J17 and J18 control the ter mination po wer setting for the MegaRAID 320-2 SCSI channels, as e xplained in Section 6.2.4.6, “J17/J18 SCSI Bus T ermination P ower , ” page 6-8 . By default (jumper installed on pins 1 [...]

6-14 Hardware Installation Copyright © 2002 by LSI Logic Corporation. All rights reserved. Figure 6.7 MegaRAID Controller with Bac kup Battery Module 6.2.7.1 Configuring the Battery Pac k After you install the MegaRAID controller y ou must configure the batter y pack in the BIOS Configur ation Utility . T o do this, y ou select the Objects menu[...]

Installation Steps 6-15 Copyright © 2002 by LSI Logic Corporation. All rights reserved. 6.2.7.2 Charging the Battery P ack The batter y pac k is shipped uncharged, and you must charge it f or 6 hours bef ore you can use it. The batter y pac k will not supply power f or the full data retention time until it is fully charged. It is a good idea to se[...]

6-16 Hardware Installation Copyright © 2002 by LSI Logic Corporation. All rights reserved. batteries must be sent to a specific location for proper disposal. Call the Rechargeable Battery Recycling Cor poration at 352-376-6693 (F AX: 352-376-6658) f or an author ized battery disposal site near you. F or a list of batter y disposal sites , write t[...]

Installation Steps 6-17 Copyright © 2002 by LSI Logic Corporation. All rights reserved. Figure 6.8 Installing the MegaRAID SCSI 320-2 Controller 6.2.9 Step 9: Connect SCSI Devices Use SCSI cables to connect SCSI de vices to the MegaRAID SCSI 320-1. The MegaRAID SCSI 320-2 has the f ollowing connectors: • T wo internal high-density 68-pin SCSI co[...]

6-18 Hardware Installation Copyright © 2002 by LSI Logic Corporation. All rights reserved. Use this procedure to connect SCSI de vices: 1. Disable termination on any SCSI de vice that does not sit at the end of the SCSI bus . 2. Configure all SCSI de vices to supply T er mPWR. 3. Set proper target IDs (TIDs) f or each SCSI device. 4. Distribute S[...]

Installation Steps 6-19 Copyright © 2002 by LSI Logic Corporation. All rights reserved. automatically occupies TID 7 on each SCSI channel. Eight-bit SCSI de vices can only use the TIDs from 0 to 6. 16-bit de vices can use the TIDs from 0 to 15. The arbitration priority for a SCSI de vice depends on its TID . T able 6.7 shows the relativ e pr iorit[...]

6-20 Hardware Installation Copyright © 2002 by LSI Logic Corporation. All rights reserved. 6.2.11 Step 11: P ower Up Replace the computer cov er and reconnect the AC po wer cords. T ur n power on to the host computer . Set up the power supplies so that the SCSI de vices are powered up at the same time as or bef ore the host computer . If the compu[...]

Summar y 6-21 Copyright © 2002 by LSI Logic Corporation. All rights reserved. 6.2.13 Step 13: Install the Operating System Driver MegaRAID can operate under MS-DOS or any DOS-compatib le operating system using the standard A T BIOS INT 13h Hard Disk Drive interf ace. T o operate with other operating systems , you m ust install software drivers . M[...]

6-22 Hardware Installation Copyright © 2002 by LSI Logic Corporation. All rights reserved.[...]

MegaRAID SCSI 320-2 Hardware Guide 7-1 Copyright © 2002 by LSI Logic Corporation. All rights reserved. Chapter 7 Installing and Configuring Cluster s This chapter e xplains how clusters work and how to install and configure them. It has the f ollowing sections: • Section 7.1, “Overview” • Section 7.2, “Benefits of Clusters” • Sect[...]

7-2 Installing and Configuring Clusters Copyright © 2002 by LSI Logic Corporation. All rights reserved. 7.2 Benefits of Clusters Clusters provide three basic benefits: • Improv ed application and data av ailability • Scalability of hardware resources • Simplified management of large or rapidly gro wing systems 7.3 Installation and Confi[...]

Installation and Configuration 7-3 Copyright © 2002 by LSI Logic Corporation. All rights reserved. cannot be f ailed over individually when assigned driver letters in Windows 2000. 11. Follow the on-screen instructions to create arra ys and sav e the configuration. 12. Repeat step 4 – step 7 for the second controller . 13. P ow er down the sec[...]

7-4 Installing and Configuring Clusters Copyright © 2002 by LSI Logic Corporation. All rights reserved. 5. Repeat step 1 – step 4 to install the device driver on the second system. After the cluster is installed, and both nodes are in the Microsoft Windows 2000 Adv anced Ser ver , installation will detect a SCSI processor de vice. 6. On the F o[...]

Cluster Installation 7-5 Copyright © 2002 by LSI Logic Corporation. All rights reserved. configuration is unsuppor ted. HCL cer tification requires a separate private network adapter . 7.3.3 Shared Disk Requirements Disks can be shared by the nodes . The requirements for sharing disks are as f ollows: • Ph ysically attach all shared disks, inc[...]

7-6 Installing and Configuring Clusters Copyright © 2002 by LSI Logic Corporation. All rights reserved. T able 7.1 shows which nodes and stor age devices should be pow ered on during each step. Bef ore installing the Cluster Ser vice software y ou must f ollow the steps below: • Install Windows 2000 Adv anced Ser ver or Windo ws 2000 Datacenter[...]

Cluster Installation 7-7 Copyright © 2002 by LSI Logic Corporation. All rights reserved. 7.4.2 Installing Microsoft Windo ws 2000 Install Microsoft Windows 2000 on each node . See your Windows 2000 manual f or information. Log on as administrator bef ore you install the Cluster Ser vices . 7.4.3 Setting Up Networks Note: Do not allow both nodes to[...]

7-8 Installing and Configuring Clusters Copyright © 2002 by LSI Logic Corporation. All rights reserved. Note: Use crossov er cables f or the network card adapters that access the cluster nodes. If y ou do not use the crossover cables properly , the system will not detect the network card adapter that accesses the cluster nodes. If the network car[...]

Cluster Installation 7-9 Copyright © 2002 by LSI Logic Corporation. All rights reserved. the connection and correctly assign it. F ollow these steps to change the name: 1. Right-click on the Local Area Connection 2 icon. 2. Click on Rename . 3. In the te xt box, type Private Cluster Connection and then press Enter . 4. Repeat steps 1-3 to change t[...]

7-10 Installing and Configuring Clusters Copyright © 2002 by LSI Logic Corporation. All rights reserved. Select the network speed from the drop-down list. Do not use “A uto- select” as the setting f or speed. Some adapters can drop pack ets while deter mining the speed. Set the network adapter speed by clic king the appropr iate option, such [...]

Cluster Installation 7-11 Copyright © 2002 by LSI Logic Corporation. All rights reserved. 7.4.7 V erifying Connectivity and Name Resolution P erf orm the f ollowing steps to verify that the network adapters are working properly: Note: Bef ore proceeding, you must know the IP address f or each network card adapter in the cluster . Y ou can obtain i[...]

7-12 Installing and Configuring Clusters Copyright © 2002 by LSI Logic Corporation. All rights reserved. Ping 192.168.0.172 and Ping 10.1.1.1 from Node 1. Then you w ould type: Ping 192.168.0.172 and 10.1.1.1 from Node 2. T o confirm name resolution, ping each node from a client using the node’ s machine name instead of its IP number . 7.4.8 V[...]

Cluster Installation 7-13 Copyright © 2002 by LSI Logic Corporation. All rights reserved. 6. Right-click on User s . 7. P oint to New and clic k on User . 8. T ype in the cluster name and click on Ne xt . 9. Set the pass word settings to User Cannot Change P ass word and P assw ord Ne ver Expires. 10. Click on Next , then clic k on Finish to creat[...]

7-14 Installing and Configuring Clusters Copyright © 2002 by LSI Logic Corporation. All rights reserved. • Create a small par tition [Use a minimum of 50 Mb ytes as a quor um disk. Windows 2000 gener ally recommends a quorum disk to be 500 Mbytes .] • Dedicate a separate disk f or a quor um resource . The f ailure of the quorum disk would cau[...]

Cluster Installation 7-15 Copyright © 2002 by LSI Logic Corporation. All rights reserved. 7.4.12 Assigning Drive Letters After you ha ve configured the b us, disks, and par titions , you must assign drive letters to each par tition on each clustered disk. F ollow these steps to assign drive letters. Note: Mountpoints is a f eature of the file sy[...]

7-16 Installing and Configuring Clusters Copyright © 2002 by LSI Logic Corporation. All rights reserved. 13. Highlight the file and press the Del key to delete it from the clustered disk. 14. Repeat the process for all clustered disks to make sure the y can be accessed from the first node. After you complete the procedure , shut down the first[...]

Cluster Installation 7-17 Copyright © 2002 by LSI Logic Corporation. All rights reserved. 9. Click on I Under stand to accept the condition that Cluster Ser vice is suppor ted only on hardware listed on the Hardw are Compatibility List. This is the first node in the cluster ; theref ore, you m ust create the cluster itself . 10. Select the first[...]

7-18 Installing and Configuring Clusters Copyright © 2002 by LSI Logic Corporation. All rights reserved. 14. Click on Next . The Add or Remov e Managed Disks screen displays ne xt. This screen is in the f ollowing section about configur ing cluster disks . 7.4.15 Configuring Cluster Disks Windows 2000 Managed Disks displa ys all SCSI disks, as [...]

Cluster Installation 7-19 Copyright © 2002 by LSI Logic Corporation. All rights reserved. In production clustering scenar ios , you need to use more than one private network f or cluster communication to av oid having a single point of f ailure. Cluster Ser vice can use private netw or ks f or cluster status signals and cluster management. This pr[...]

7-20 Installing and Configuring Clusters Copyright © 2002 by LSI Logic Corporation. All rights reserved. The order in which the Cluster Ser vice Configuration Wizard presents these networks can vary . In this e xample, the public netw or k is presented first. F ollow these steps to configure the clustered disks: 1. The Add or Remov e Managed D[...]

Cluster Installation 7-21 Copyright © 2002 by LSI Logic Corporation. All rights reserved. 2. Click on Ne xt in the Configure Cluster Networks dialog bo x. 3. V erify that the network name and IP address correspond to the network interface f or the public netw or k. 4. Check the bo x Enable this netw ork for c luster use . 5. Select the option All[...]

7-22 Installing and Configuring Clusters Copyright © 2002 by LSI Logic Corporation. All rights reserved. In this e xample, both networks are configured so that both can be used f or inter nal cluster communication. The ne xt dialog window off ers an option to modify the order in which the networks are used. Because Private Cluster Connection rep[...]

Cluster Installation 7-23 Copyright © 2002 by LSI Logic Corporation. All rights reserved. 9. Enter the unique cluster IP address and Subnet mask f or your network, then click on Ne xt . The Cluster Ser vice Configuration Wizard sho wn below automatically associates the cluster IP address with one of the public or mix ed networks. It uses the subn[...]

7-24 Installing and Configuring Clusters Copyright © 2002 by LSI Logic Corporation. All rights reserved. The Cluster Ser vice Setup Wizard completes the setup process f or the first node by cop ying the files needed to complete the installation of Cluster Ser vice . After the files are copied, the Cluster Ser vice registry entr ies are created[...]

Cluster Installation 7-25 Copyright © 2002 by LSI Logic Corporation. All rights reserved. 11. When a dialog box appears telling you that Cluster Service has star ted successfully . Click on OK . 12. Close the Add/Remove Prog rams window . 7.4.16 V alidating the Cluster Installation Use the Cluster Administrator snap-in to v alidate the Cluster Ser[...]

7-26 Installing and Configuring Clusters Copyright © 2002 by LSI Logic Corporation. All rights reserved. Installation of Cluster Ser vice on the second node tak es less time than on the first node. Setup configures the Cluster Service network settings on the second node based on the configuration of the first node . Installation of Cluster Se[...]

Installing SCSI Drives 7-27 Copyright © 2002 by LSI Logic Corporation. All rights reserved. 2. Right-click the g roup Disk Group 1 and select the option Move . This option mov es the group and all its resources to another node. After a shor t period of time, the Disk F: G: will be brought online on the second node. If y ou watch the screen, you wi[...]

7-28 Installing and Configuring Clusters Copyright © 2002 by LSI Logic Corporation. All rights reserved. The SCSI bus listed in the hardw are requirements must be configured prior to installation of Cluster Ser vices. This includes: • Configuring the SCSI devices . • Configuring the SCSI controllers and hard disks to work proper ly on a sh[...]

MegaRAID SCSI 320-2 Hardware Guide 8-1 Copyright © 2002 by LSI Logic Corporation. All rights reserved. Chapter 8 T r oubleshooting This chapter provides troub leshooting information for the MegaRAID SCSI 320-2 controller . It contains the f ollowing sections: • Section 8.1, “General T roub leshooting” • Section 8.2, “BIOS Boot Error Mess[...]

8-2 T roubleshooting Copyright © 2002 by LSI Logic Corporation. All rights reserved. Pressed <Ctrl><M>. Ran Megaconf .e x e and tr ied to make a new configuration. The system hangs when scanning de vices. Check the driv es IDs on each channel to make sure each de vice has a diff erent ID . Check the termination. The device at the end [...]

BIOS Boot Error Messages 8-3 Copyright © 2002 by LSI Logic Corporation. All rights reserved. 8.2 BIOS Boot Error Messages T able 8.2 describes BIOS error messages that can displa y when you boot the system, and suggested solutions. T able 8.2 BIOS Boot Error Messages Message Prob lem Suggested Solution Adapter BIOS Disabled. No Logical Drives Hand[...]

8-4 T roubleshooting Copyright © 2002 by LSI Logic Corporation. All rights reserved. X Logical Drives Degraded x n umber of logical drives signed on in a degraded state . Make sure all ph ysical drives are properly connected and are powered on. Run MegaRAID Manager to find if any ph ysical drives are not responding. Reconnect, replace, or rebuild[...]

Other BIOS Error Messages 8-5 Copyright © 2002 by LSI Logic Corporation. All rights reserved. 8.3 Other BIOS Error Messages T able 8.3 describes other BIOS error messages, their meaning, and suggested solutions. 8.4 Other P otential Problems T able 8.4 describes other potential problems . T able 8.3 Other BIOS Error Messages Message Pr oblem Sugge[...]

8-6 T roubleshooting Copyright © 2002 by LSI Logic Corporation. All rights reserved. CD drives under DOS At this time, copied CDs are not accessib le from DOS e ven after loading MEGASPI.SYS and MEGA CDR.SYS. Ph ysical dr iv e errors T o display the MegaRAID Manager Media Error and Other Error options, select the Objects menu, then Ph ysical Dr iv[...]

Other P otential Problems 8-7 Copyright © 2002 by LSI Logic Corporation. All rights reserved. Windows NT Installation When Windows NT is installed using a bootab le CD , the devices on the MegaRAID SCSI 320-2 are not recognized until after the initial reboot. The Microsoft documented workaround is in SETUP .TXT , which is on the CD . P erform the [...]

8-8 T roubleshooting Copyright © 2002 by LSI Logic Corporation. All rights reserved.[...]

MegaRAID SCSI 320-2 Hardware Guide A-1 Copyright © 2002 by LSI Logic Corporation. All rights reserved. Appendix A SCSI Cables and Connector s The MegaRAID SCSI 320-2 provides se ver al diff erent types of SCSI connectors. The connectors are: • T wo 68-pin high density internal connectors • T wo 68-pin v er y high density external connectors A.[...]

A-2 SCSI Cables and Connectors Copyright © 2002 by LSI Logic Corporation. All rights reserved. A.1.1 Cable Assembly f or Internal Wide SCSI Devices The cable assemb ly for connecting internal Wide SCSI devices is sho wn below . Pin 1 Connectors: 68 P osition Plug (Male) AMP – 786090-7 Cable: Flat Ribbon or T wisted-Pair Flat Cable 68 Conductor 0[...]

68-Pin High-Density SCSI Inter nal Connector A-3 Copyright © 2002 by LSI Logic Corporation. All rights reserved. A.1.2 Connecting Internal and External Wide Devices The cable assemb ly for connecting internal Wide and external Wide SCSI de vices is shown below . Pin 1 Pin 1 Pin 1 A Connector A: 68 P osition Panel Mount Receptacle with 4-40 Holes ([...]

A-4 SCSI Cables and Connectors Copyright © 2002 by LSI Logic Corporation. All rights reserved. A.1.3 Con ver ting Internal Wide to Internal Non-Wide (T ype 2) The cable assemb ly for con ver ting internal Wide SCSI connectors to inter nal non-Wide (T ype 2) SCSI connectors is shown below . Pin 1 Connector A : 68 P osition Plug (Male) AMP– 749925[...]

68-Pin High-Density SCSI Inter nal Connector A-5 Copyright © 2002 by LSI Logic Corporation. All rights reserved. A.1.4 Con ver ting Internal Wide to Internal Non-Wide (T ype 30) The cable assemb ly for con ver ting internal Wide SCSI connectors to inter nal non-Wide (T ype 30) SCSI connectors is shown below . A.1.5 Con ver ting from Internal Wide [...]

A-6 SCSI Cables and Connectors Copyright © 2002 by LSI Logic Corporation. All rights reserved. A.2 SCSI Cable and Connector V endors T able A.1 lists SCSI cab le v endors, and contact inf or mation. T able A.2 tab le lists SCSI connector v endors. T able A.1 SCSI Cable V endors Manufacturer T elephone Number Cables T o Go V oice: 800-826-7904 F ax[...]

High-Density 68-Pin Connector Pinout for SE SCSI A-7 Copyright © 2002 by LSI Logic Corporation. All rights reserved. A.3 High-Density 68-Pin Connector Pinout for SE SCSI T able A.3 lists the pinout f or the high-density 68-pin connectors for single-ended SCSI. T able A.3 High-Density 68-Pin Connector Pinout (SE SCSI) Signal Connector Pin Cable Pin[...]

A-8 SCSI Cables and Connectors Copyright © 2002 by LSI Logic Corporation. All rights reserved. The f ollowing applies to the high-density SCSI connector described in T able A.3 : • A h yphen before a signal name indicates that signal is activ e low . • The connector pin ref ers to the conductor position when using 0.025 inch centerline flat r[...]

68-Pin Connector Pinout f or L VD SCSI A-9 Copyright © 2002 by LSI Logic Corporation. All rights reserved. A.4 68-Pin Connector Pinout f or L VD SCSI T able A.4 lists the pinout f or the 68-pin connector for L VD SCSI. T able A.4 68-Pin Connector Pinout for L VD SCSI Signal Connector Pin Cable Pin Cable Pin Connector Pin Signal +DB(12) 1 1 2 35 -D[...]

A-10 SCSI Cables and Connectors Copyright © 2002 by LSI Logic Corporation. All rights reserved. Note: The “connector pin” in the table ref ers to the conductor position when using flat-ribbon cable . +BSY 23 45 46 57 -BSY +A CK 24 47 48 58 -ACK +RST 25 49 50 59 -RST +MSG 26 51 52 60 -MSG +SEL 27 53 54 61 -SEL +C/D 28 55 56 62 -C/D +REQ 29 57 [...]

MegaRAID SCSI 320-2 Hardware Guide B-1 Copyright © 2002 by LSI Logic Corporation. All rights reserved. Appendix B A udible W arnings The MegaRAID SCSI 320-1 RAID controller has an onboard tone generator that indicates e vents and errors . Note: This is av ailable only if the optional series 502 Batter y Backup Unit (BB U) is installed. T able B.1 [...]

B-2 A udible W ar nings Copyright © 2002 by LSI Logic Corporation. All rights reserved.[...]

MegaRAID SCSI 320-2 Hardware Guide C-1 Copyright © 2002 by LSI Logic Corporation. All rights reserved. Appendix C Glossary Array A g rouping of individual disk dr iv es that combines the storage space on the disk drives into a single segment of contiguous storage space . MegaRAID can group disk drives on one or more SCSI channels into an arra y . [...]

C-2 Glossar y Copyright © 2002 by LSI Logic Corporation. All rights reserved. Channel An electrical path for the tr ansfer of data and control inf or mation between a disk and a disk controller . Consistency Check An e xamination of the disk system to deter mine whether all conditions are valid f or the specified configuration (such as parity .)[...]

C-3 Copyright © 2002 by LSI Logic Corporation. All rights reserved. provides high I/O perf or mance at low cost, b ut provides low ers data reliability than any of its member disks . Disk Subsystem A collection of disks and the hardware that connects them to one or more host computers. The hardw are can include an intelligent controller , or the d[...]

C-4 Glossar y Copyright © 2002 by LSI Logic Corporation. All rights reserved. Host Computer An y computer to which disks are directly attached. Mainframes, servers, workstations, and personal computers can all be considered host computers. Hot Spare A stand-by disk driv e ready for use if a drive in an arr ay f ails. A hot spare does not contain a[...]

C-5 Copyright © 2002 by LSI Logic Corporation. All rights reserved. Mbyte (Megab yte) An abbre viation for 1,000,000 (10 to the sixth pow er) bytes. One Mbyte equals 1,000 Kb ytes (kilobytes). Multi-threaded Having m ultiple concurrent or pseudo-concurrent ex ecution sequences. Used to describe processes in computer systems. Multi-threaded process[...]

C-6 Glossar y Copyright © 2002 by LSI Logic Corporation. All rights reserved. RAID Redundant Arra y of Independent Disks. A data storage method in which data, along with parity information, is distr ib uted among two or more hard disks (called an arra y ) to improve perf ormance and reliability . A RAID disk subsystem improv es I/O performance on [...]

C-7 Copyright © 2002 by LSI Logic Corporation. All rights reserved. Redundancy The provision of m ultiple interchangeable components to perf or m a single function to cope with f ailures or errors. Redundancy normally applies to hardware; disk mirroring is a common f or m of hardw are redundancy . Replacement Disk A disk av ailable to replace a f [...]

C-8 Glossar y Copyright © 2002 by LSI Logic Corporation. All rights reserved. Service Pro vider The Ser vice Provider (SP) is a progr am that resides in the desktop system or ser v er and is responsible f or all DMI activities. This lay er collects management inf or mation from products (whether system hardware , per ipherals , or software), store[...]

C-9 Copyright © 2002 by LSI Logic Corporation. All rights reserved. Ultra320 A subset of Ultra3 SCSI that allows a maxim um throughput of 320 Mbytes/s , which is twice as fast as Wide Ultra2 SCSI. Ultr a320 SCSI provides 320 Mb ytes/s on a 16-bit connection. Virtual Sizing FlexRAID virtual sizing is used to create a logical dr iv e up to 80 Gbytes[...]

C-10 Glossar y Copyright © 2002 by LSI Logic Corporation. All rights reserved.[...]

MegaRAID SCSI 320-2 Hardware Guide IX-1 Copyright © 2002 by LSI Logic Corporation. All rights reserved. Inde x Numerics 0 DIMM socket 6-4 160M and Wide SCSI 4-1 68-pin connector pinout for LVD SCSI A-9 68-Pin High Density Connectors A-1 A AMI Part Number Battery 6-13 AMPLIMITE .050 Series connectors A-8 Array C-1 Array Configuration Planner 5-15 A[...]

IX-2 Inde x Copyright © 2002 by LSI Logic Corporation. All rights reserved. Disconnect/reconnect 4-10 Disk C-2 Disk Access and Functionality 7-15 Disk array C-2 Disk Array Types 2-11 Disk duplexing C-2 Disk mirroring 2-6 , C-2 Disk rebuild 2-9 Disk spanning 2-7 , C-2 Disk striping 2-4 , C-2 Disk subsystem C-3 Disposing of a Battery Pack 6-15 Docum[...]

Inde x IX-3 Copyright © 2002 by LSI Logic Corporation. All rights reserved. OS/2 2.x 4-12 Other BIOS error messages 8-5 P Parity 2-8 , C-5 Partition C-5 Physical array 2-3 Physical disk C-5 Physical disk roaming C-5 Physical drive 2-3 Power Console Plus 4-12 , 6-15 Processor 4-7 Product specifications 4-7 Protocol C-5 R RAID C-6 Benefits 2-1 Intro[...]

IX-4 Inde x Copyright © 2002 by LSI Logic Corporation. All rights reserved. V Virtual sizing C-9 W WebBIOS Configuration Utility 4-11 Wide SCSI C-9 Windows .NET 6-21 Windows 2000 6-21 Windows NT 4-7 , 6-21 Windows XP 6-21 Write-back caching 6-15[...]

MegaRAID SCSI 320-2 Hardware Guide 1-1 Copyright © 2002 by LSI Logic Corporation. All rights reserved. LSI Logic Confidential Customer Feedbac k W e would appreciate your f eedback on this document. Please cop y the f ollowing page, add y our comments, and f ax it to us at the number shown. If appropriate, please also f ax copies of any marked-up[...]

LSI Logic Confidential 1-2 Customer F eedback Copyright © 2002 by LSI Logic Corporation. All rights reserved. Reader’ s Comments F ax your comments to: LSI Logic Cor por ation T echnical Publications M/S E-198 F ax: 408.433.4333 Please tell us how y ou rate this document: MegaRAID SCSI 320-2 Hard- ware Guide. Place a chec k mar k in the appropr[...]