Manuale d’uso / di manutenzione del prodotto MegaRAID SCSI 320-0 Zero-Channel RAID Controller Series 520 del fabbricante LSI
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® MegaRAID ® SCSI 320-0 Zero-Channel RAID Controller HARD W ARE GUIDE September 20 02.
ii Cop yright © 2002 b y LSI Logic Corporation. A l l rights reserved. This doc ument co ntains prop rietary info rmation of LSI L ogic Corporati on. The inf or mation c ontained h erein is not to be us ed by or disclo sed to th ird par ties withou t the e xpress w ritten permission of an of ficer of LSI Logic Corpora tion.
iii Cop yright © 2002 b y LSI Logic Corporation. A l l rights reserved. FCC Regulatory Statement This de vice compli es with P art 15 of the FCC Rules .
iv Cop yright © 2002 b y LSI Logic Corporation. A l l rights reserved..
MegaRAID SCSI 320-0 Hardw are Guide v Cop yright © 2002 b y LSI Logic Corporation. A l l rights reserved. Preface This b ook is the pr imar y reference and Hardware Gu ide for the LSI Log ic MegaRAID ® SC SI 320-0 Con troller. It contains instr uctions f or instal ling the MegaRA ID contr oller and for con figur ing RAID arra ys.
vi Preface Cop yright © 2002 b y LSI Logic Corporation. A l l rights reserved. · Chapter 6, Hardw are Installa tion , e x plains how to install the MegaRAID S CSI 320 -0 control ler . · Chapter 7, T rouble shooting , provides troubleshooting i nformatio n f or the M egaRAID SCSI 320- 0 contr oller .
Pref ace vii Cop yright © 2002 b y LSI Logic Corporation. A l l rights reserved. Logical Drive Configuration Use this f o rm to reco rd the con figuration details for your logical dri v es.
viii Pr eface Cop yright © 2002 b y LSI Logic Corporation. A l l rights reserved. LD9 LD10 LD11 LD12 LD13 LD14 LD15 LD16 LD17 LD18 LD19 LD20 LD21 LD22 LD23 LD24 LD25 LD26 LD27 LD28 LD29 LD30 LD31 LD32 LD33 Logical Drive Configuration (Cont.
Pref ace ix Cop yright © 2002 b y LSI Logic Corporation. A l l rights reserved. Physical Device Lay out Use this f o rm to reco rd the physical device layout.
xP r e f a c e Cop yright © 2002 b y LSI Logic Corporation. A l l rights reserved. Manu f actu rer/M ode l number Firmware le vel T arget ID Device type Logical driv e numbe r/Driv e numbe r Manu f a.
Pref ace xi Cop yright © 2002 b y LSI Logic Corporation. A l l rights reserved. Manu f actu rer/M ode l number Firmware le vel T arget ID Device type Logical driv e numbe r/Driv e numbe r Manu f actu.
xii Preface Cop yright © 2002 b y LSI Logic Corporation. A l l rights reserved. Manu f actu rer/M ode l number Firmware le vel T arget ID Device type Logical driv e numbe r/Driv e numbe r Manu f actu.
MegaRAID SCSI 320-0 Ha rdware G uide xiii Cop yright © 2002 b y LSI Logic Corporation. A l l rights reserved. Contents Chapter 1 Overv iew 1. 1 F eatures 1-2 1.2 NVRAM and Flash ROM 1-2 1.3 Single-E nded and Di ff e rential SCS I Buses 1-2 1.4 Maximum Cable Length f or SCS I Standards 1-3 1.
xiv Co ntents Cop yright © 2002 b y LSI Logic Corporation. A l l rights reserved. 2.3.8 P ari ty 2-8 2.3. 9 Hot Sp ares 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 Dr ive States 2 -10 2.3.14 Disk Ar ra y T ype s 2-11 2.
Contents xv Cop yright © 2002 b y LSI Logic Corporation. A l l rights reserved. 4.10.4 MegaRAID M anager 4-8 4.11 Co mpat ibilit y 4-9 4.11 .1 S erver M anageme nt 4-9 4.11.2 SCSI Device C ompatibil ity 4-9 4.11.3 Software 4-9 Chapter 5 Configuring Phys ical Drives, Arrays, and Logical Drives 5.
xvi Co ntents Cop yright © 2002 b y LSI Logic Corporation. A l l rights reserved. Chapter 7 T rouble shooting 7.1 General T r oubleshootin g 7-1 7.2 BIOS Boot E rror Mess ages 7-3 7.
MegaRAID SC SI 320-0 Hardw are Guide 1-1 Cop yright © 2002 by LSI Logic Corporation. All rights reserved. Chapter 1 Overvie w This chap ter provid es an overvi e w of th e MegaR AID ® SCSI 320-0 an d basic SC SI f eatu res. It contai ns the following sec tions: · Section 1.
1-2 Over vi ew Cop yright © 2002 by LSI Logic Corporation. All rights reserved. 1.1 Features MegaRAID S CSI 320-0 f e atures inc lude: · Provides a hi gh perfor mance I/O migration pa th while pres er ving e xis tin g PCI- SCSI s oftw are. · P erforms SCSI data transfers up to 32 0 Mbytes/s.
Maximu m Cab le Leng th fo r SCSI Standards 1-3 Cop yright © 2002 by LSI Logic Corporation. All rights reserved. 1.4 Maxim um C ab le Length f or SCSI Standar ds Ta b l e 1 . 1 li sts the m aximum SCS I cable lengt h and number of disk drives that you can us e, depending o n the SC SI speeds.
1-4 Over vi ew Cop yright © 2002 by LSI Logic Corporation. All rights reserved. 1.5 SCSI Bu s Widths and Maximum Throughput Ta b l e 1 . 2 list s the SCSI bus widths and maximum throughpu t, based on the SCSI s peeds.
Documenta tion 1-5 Cop yright © 2002 by LSI Logic Corporation. All rights reserved. 1.6.3 MegaRAI D Operating Syste m Driver Inst allation Guide This m anual provides de tailed in f o rm ation abou t install ing the Meg aRAID SCSI 320- 0 operating system drivers.
1-6 Over vi ew Cop yright © 2002 by LSI Logic Corporation. All rights reserved..
MegaRAID SC SI 320-0 Hardw are Guide 2-1 Cop yright © 2002 by LSI Logic Corporation. All rights reserved. Chapter 2 Intr oduction to RAID This chap ter introdu ces i mpor tan t RAID concep ts. It conta ins the f ollowin g sectio ns: · Section 2.1, “R AID Ben efits” · Section 2.
2-2 Intr oduct ion t o RAI D Cop yright © 2002 by LSI Logic Corporation. All rights reserved. 2.1.2 I ncreased Rel iabili ty The ele ctromechan ical co mponen ts of a dis k subs ystem ope rate more slowly , requir e more power , and gene rate more noise an d vibration tha n electro nic devices.
RAID Overv iew 2-3 Cop yright © 2002 by LSI Logic Corporation. All rights reserved. 2.2.2 SC SI-to-SCSI External RAID A SCSI- to-SC SI extern al RAID produ ct puts the RA ID intell igenc e inside the RAI D chassi s and us es a plai n SCSI hos t adapter installe d in the network ser ver .
2-4 Intr oduct ion t o RAI D Cop yright © 2002 by LSI Logic Corporation. All rights reserved. · A combi nation of any two of the above conditions 2.3.3 Cons istency Check A cons istency c heck verifies the correc tness of redundant d ata in a RAID array .
RAID Overv iew 2-5 Cop yright © 2002 by LSI Logic Corporation. All rights reserved. Figure 2.1 Disk Striping Disk st riping inv o lves par titi oning eac h disk dr ive’ s storag e space into strip es th at ca n v ar y in siz e fr om 2 to 128 Kb ytes.
2-6 Intr oduct ion t o RAI D Cop yright © 2002 by LSI Logic Corporation. All rights reserved. 2.3.5.2 Stripe Si ze The str ipe si ze is the len gth of the inter leav ed data segm ents that MegaRAID S CSI 320 -0 writ es acro ss multiple dr ives. MegaRAID SC SI 320-0 s uppor ts str ipe sizes o f 2, 4, 8, 16, 3 2, 64, o r 128 Kbytes.
RAID Overv iew 2-7 Cop yright © 2002 by LSI Logic Corporation. All rights reserved. 2.3.7 Disk Spanning Disk s panning allows multiple dis k drives to function like one big dri v e. Spann ing ov ercom es lack of disk space a nd simplifi es storage managemen t by combinin g ex istin g resour ces or ad ding rel ativ ely inexpensive resourc es.
2-8 Intr oduct ion t o RAI D Cop yright © 2002 by LSI Logic Corporation. All rights reserved. Ta b l e 2 . 1 des cr i bes how dis k sp annin g is used for RAID 10 an d RA ID 50 . Note: Spann ing two co ntiguo us RAID 0 l ogical d rives doe s not produce a new RAID lev e l or add fault t olerance.
RAID Overv iew 2-9 Cop yright © 2002 by LSI Logic Corporation. All rights reserved. has a ca pacity clos est to and at least as great as that of the failed dr iv e to take the plac e of the failed dr ive. Note: Hot spa res are empl o yed only in ar ra ys with redund ancy— f o r e xam ple, RAID lev el s 1, 5, 10, a nd 50.
2-10 Introduc tion to RAID Cop yright © 2002 by LSI Logic Corporation. All rights reserved. The Meg aRAID SCSI 32 0-0 rebuild rate can be configured bet ween 0% and 100%. A t 0%, the rebuild is only done if the system is not doing anything else. At 100%, the rebuild has a higher pr ior ity than any other system activit y .
RAID Overv iew 2-11 Cop yright © 2002 by LSI Logic Corporation. All rights reserved. 2.3.14 Disk Arra y T ypes Ta b l e 2 . 4 des cribes th e RAID disk a rra y types. 2.3.15 Enclosur e Management Enclos ure mana gement is the intell igent m onitori ng of the di sk subsys tem by software an d/or hard ware.
2-12 Introduc tion to RAID Cop yright © 2002 by LSI Logic Corporation. All rights reserved..
MegaRAID SC SI 320-0 Hardw are Guide 3-1 Cop yright © 2002 by LSI Logic Corporation. All rights reserved. Chapter 3 RAID Le vels This chap ter desc rib es each sup por t ed RAID lev el and th e factors to consid er when choo sing a RAID lev e l. It conta ins the follo wing sections: · Section 3.
3-2 RAI D Lev els Cop yright © 2002 by LSI Logic Corporation. All rights reserved. 3.2 RAID 0 RAID 0 p rovides disk s trip ing acros s all dr ives in the RAID s ubsystem. RAID 0 d oes not provide any data redunda ncy , but does offer the bes t performa nce of any RAI D lev el.
RAID 1 3-3 Cop yright © 2002 by LSI Logic Corporation. All rights reserved. Figure 3.1 RAID 0 Arr a y 3.3 RAID 1 In RAID 1, the MegaRA ID SCSI 320 -0 dupli cates all data f rom on e dr ive to a second dr ive. RAID 1 pro vid es com ple te dat a red und anc y , but at the cost of doubling the r equire d data storage c apacity .
3-4 RAI D Lev els Cop yright © 2002 by LSI Logic Corporation. All rights reserved. Figure 3.2 RAID 1 Arr a y 3.4 RAID 5 RAID 5 includes disk str iping at t he b yte level and par ity . I n RAID 5, the pari ty inform ation is wr itten to se veral drives.
RAID 5 3-5 Cop yright © 2002 by LSI Logic Corporation. All rights reserved. Figure 3.3 sho ws a RAI D 5 arr ay w ith six disk dri ve s. Figure 3.3 RAID 5 Arr a y Uses Provid es high data th roughput, espec ially f or large files .
3-6 RAI D Lev els Cop yright © 2002 by LSI Logic Corporation. All rights reserved. 3.5 RAID 10 RAID 10 is a com bination of RAID 0 a nd RAID 1. RAID 10 ha s mirror ed dri v es. RA ID 10 brea ks up da ta into sm aller blocks, and then st ripes the bloc ks of data t o each RAID 1 RAID set.
RAID 50 3-7 Cop yright © 2002 by LSI Logic Corporation. All rights reserved. Figure 3.4 RAID 10 Ar ray 3.6 RAID 50 RAID 50 provid es the features of both RAID 0 and RAID 5, including bo th pari ty and di sk str iping across mul tiple dr ives. RAID 50 is best implem ented on t wo RAID 5 disk arrays with data str iped ac ross bo th disk arrays.
3-8 RAI D Lev els Cop yright © 2002 by LSI Logic Corporation. All rights reserved. RAID 50 can sus tain one to f ou r dr ive f ai lures w hile main taining d ata integr ity , if each failed disk is in a diff erent RA ID 5 array . Figure 3.5 shows a RAID 5 0 array with six disk dr ives.
MegaRAID SC SI 320-0 Hardw are Guide 4-1 Cop yright © 2002 by LSI Logic Corporation. All rights reserved. Chapter 4 Feature s This chap ter explains the features of th e MegaR AID SCSI 32 0-0. It conta ins the following secti ons: · Section 4.1, “SMA RT T ech nology” · Section 4.
4-2 F eatures Cop yright © 2002 by LSI Logic Corporation. All rights reserved. 4.2 Configur ation on Disk Config uration on Disk (dri v e roami ng) sav es conf iguration i nf or matio n both in n onv ol atile random access m emor y (N VRAM) on th e MegaRAID SCSI 320- 0, and on th e disk d rives control led by the MegaR AID SCSI 320-0.
Array P erfor manc e Featur es 4-3 Cop yright © 2002 by LSI Logic Corporation. All rights reserved. 4.4 Arra y P erf ormance Features Ta b l e 4 . 2 lists the array performan ce f eatur es.
4-4 F eatures Cop yright © 2002 by LSI Logic Corporation. All rights reserved. 4.5 RAID Management Features Ta b l e 4 . 3 lists the RAID ma nagement features. 4.6 F ault T olerance Features Ta b l e 4 . 4 lists t he f ault to lera nce f eatu res . T able 4.
Softw are Utilitie s 4-5 Cop yright © 2002 by LSI Logic Corporation. All rights reserved. 4.7 Software Ut ilities Ta b l e 4 . 5 list s the so ftware utilit y features. 4.8 Operating System Software Driver s MegaRAID S CSI 320-1 includes a DOS software c onfigurati on utility , an d dri v ers for: · Windows N T 4.
4-6 F eatures Cop yright © 2002 by LSI Logic Corporation. All rights reserved. 4.9 MegaRAID SCSI 320-0 Specifi cations Ta b l e 4 . 6 lists the specifi cations for the SCS I 320-0. 4.9.1 PC I Bridge/ CPU MegaRAID S CSI 320-0 uses the Inte l i960RM P CI bri dge with an embedded 80 960 JX RISC processo r r unning at 66 MHz.
MegaRAID SCSI 320-0 Spec ifications 4-7 Cop yright © 2002 by LSI Logic Corporation. All rights reserved. 4.9.2 Cac he Memory MegaRAID S CSI 320-0 suppor ts 32 to 128 Mbytes of ECC S DRAM DIMM on-b oard cache memor y . MegaRA ID suppor ts write- through or writ e-back cachin g, which c an be sel ected for each l ogical d rive.
4-8 F eatures Cop yright © 2002 by LSI Logic Corporation. All rights reserved. 4.10 RAID Management RAID ma nagement i s provided by software utili ties that m anage and configur e the RAID sy stem a.
Compa tibility 4 -9 Cop yright © 2002 by LSI Logic Corporation. All rights reserved. 4.11 Compatibil ity MegaRAID S CSI 320 -0 compa tibility issues i nclude: · Serv er manag ement · SCSI d e vice compa tibil ity · Software com patibility 4.
4-10 F eatures Cop yright © 2002 by LSI Logic Corporation. All rights reserved..
MegaRAID SC SI 320-0 Hardw are Guide 5-1 Cop yright © 2002 by LSI Logic Corporation. All rights reserved. Chapter 5 Configuring Ph ysical Drives, Arra ys, and Logic al Drives This chap ter explains how to configu re SCS I physical dri ves , arrays , and logical dri v es.
5-2 Config uring Ph ysical D rives , Arra ys, an d Logical Drive s Cop yright © 2002 by LSI Logic Corporation. All rights reserved. Note: Be su re to ba ck up y our da ta regula rly , ev en whe n using RAID . 5.1.2 Current Physical Device Configuration Use Ta b l e 5 .
Configuring SCSI Ph ysical Driv es 5-3 Cop yright © 2002 by LSI Logic Corporation. All rights reserved. 5.1.3 Logical Drive Configuration Use Ta b l e 5 .
5-4 Config uring Ph ysical D rives , Arra ys, an d Logical Drive s Cop yright © 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 T able 5.2 Logical Drive Configuration (Cont.
Configuring SCSI Ph ysical Driv es 5-5 Cop yright © 2002 by LSI Logic Corporation. All rights reserved. 5.1.4 Ph ysical Device La yout Use Ta b l e 5 .
5-6 Config uring Ph ysical D rives , Arra ys, an d Logical Drive s Cop yright © 2002 by LSI Logic Corporation. All rights reserved. Manu f actu rer/M ode l number Firmware le vel T arget ID Device ty.
Configuring SCSI Ph ysical Driv es 5-7 Cop yright © 2002 by LSI Logic Corporation. All rights reserved. Manu f actu rer/M ode l number Firmware le vel T arget ID Device type Logical driv e numbe r/Dr.
5-8 Config uring Ph ysical D rives , Arra ys, an d Logical Drive s Cop yright © 2002 by LSI Logic Corporation. All rights reserved. 5.2 Configur ing Arra ys Y ou organize the physical disk dri ves in.
Crea ting Logic al Dr ives 5-9 Cop yright © 2002 by LSI Logic Corporation. All rights reserved. Y ou can designat e dri v es as h ot spares u sing the M egaRAID BI OS Config uration Utility , the MegaRA ID Manager, or P ower Console Pl us.
5-10 Config uring Ph ysical Driv es, Arr a ys, and Logic al Driv es Cop yright © 2002 by LSI Logic Corporation. All rights reserved. 5.3.1.2 Maximizing Drive Availability Y ou can maximize the availability o f data on the physical disk dr ive in the logical array b y maxi mizing t he lev el of fault tolerance.
Crea ting Logic al Dr ives 5-11 Cop yright © 2002 by LSI Logic Corporation. All rights reserved. 5.3.2 Assigning RAID Levels Only on e RAID lev el can be as signed to each lo gical dr ive.
5-12 Config uring Ph ysical Driv es, Arr a ys, and Logic al Driv es Cop yright © 2002 by LSI Logic Corporation. All rights reserved. 5.4 Configuring Logi cal Drives After you hav e instal led the Me .
Planning the Arra y Configura tion 5-13 Cop yright © 2002 by LSI Logic Corporation. All rights reserved. pri nt ser vers? Does this disk array suppor t any software system that must be av aila ble 24.
5-14 Config uring Ph ysical Driv es, Arr a ys, and Logic al Driv es Cop yright © 2002 by LSI Logic Corporation. All rights reserved. Use Ta b l e 5 . 9 to plan the arra y configu ration.
Planning the Arra y Configura tion 5-15 Cop yright © 2002 by LSI Logic Corporation. All rights reserved. 8 RAID 0 Excellent No 100% 8 RAID 5 Good Y es 87% 8 RAID 10 Good Y es 50% 8 RAID 50 Good Y es 75% T able 5.
5-16 Config uring Ph ysical Driv es, Arr a ys, and Logic al Driv es Cop yright © 2002 by LSI Logic Corporation. All rights reserved..
MegaRAID SC SI 320-0 Hardw are Guide 6-1 Cop yright © 2002 by LSI Logic Corporation. All rights reserved. Chapter 6 Har d ware In stalla tion This ch apter e xplains how to install the MegaRA ID SCSI 320-0 c ontroller . It contain s the following se ctions: · Section 6.
6-2 Hardw are Installation Cop yright © 2002 by LSI Logic Corporation. All rights reserved. 6.2 Installation Steps The Mega RAID SC SI 320-0 pr ovides e xtensi v e custo mization options.
Inst alla tion Step s 6-3 Cop yright © 2002 by LSI Logic Corporation. All rights reserved. · The Dr iver and Docum entation CD , which co ntains these items: – The M egaRAID Con figuration S oftwa.
6-4 Hardw are Installation Cop yright © 2002 by LSI Logic Corporation. All rights reserved. Figure 6.1 MegaRAID SCSI 320-0 Contr o ller Lay out 6.2.3.1 J2 Dir ty Cache LE D J2 is a t wo-pin heade r f or t he dir ty c ache LED . This can be connec ted to an LED o n the com puter enc losure.
Inst alla tion Step s 6-5 Cop yright © 2002 by LSI Logic Corporation. All rights reserved. 6.2.3.4 J8 Connect or for Optional B BU Daughter Card J8 is 4 0-pin c onnector that is u sed to mo unt an opti onal batte ry backup unit that i s on a daug htercard.
6-6 Hardw are Installation Cop yright © 2002 by LSI Logic Corporation. All rights reserved. Figure 6.3 Installing the MegaRAID SCSI 320-0 Contr oller 6.2. 5 Step 5: P ower Up Replace t he compute r cover and reconnec t the AC power cords. T u rn power on to the hos t compute r .
Inst alla tion Step s 6-7 Cop yright © 2002 by LSI Logic Corporation. All rights reserved. The fir mware takes sev eral second s to init ialize. During thi s time the adapter wi ll scan th e SCSI cha nnel(s ). When rea dy , t he following appears : Host Ada pter-1 Firmwar e Version x.
6-8 Hardw are Installation Cop yright © 2002 by LSI Logic Corporation. All rights reserved. EMM386 .EXE is lo aded. If you do not d o this, you cannot access the boot dr ive after EM M386 i s loaded. 6.3 Sum mary This cha pter discus sed hardware in stallation.
MegaRAID SC SI 320-0 Hardw are Guide 7-1 Cop yright © 2002 by LSI Logic Corporation. All rights reserved. Chapter 7 T r oub leshooting This chap ter provides troubleshooti ng inform ation for the MegaRA ID SCSI 320- 0 contr oller . It c ontains the f ollowing s ection s: · Section 7.
7-2 T roub leshooting Cop yright © 2002 by LSI Logic Corporation. All rights reserved. One of the hard drives in the arra y fa ils often. Chec k the driv e error counts using P o w er Cons ole Plus . See the MegaRAID Co nfiguration Softwar e Guide f or more inf or mation .
BIOS Boot Error Message s 7-3 Cop yright © 2002 by LSI Logic Corporation. All rights reserved. 7.2 BIOS Boo t Error M essag es Ta b l e 7 . 2 des cribe s err or messag es that can di splay when you boot the system , and sugge sted sol utions. T able 7.
7-4 T roub leshooting Cop yright © 2002 by LSI Logic Corporation. All rights reserved. 7.3 Other BIOS Er r or Messages Ta b l e 7 . 3 des cribes o ther BIO S error mes sages, their me aning, and sugge sted sol utions. 1 Logica l Drive Degr aded A lo gical driv e signe d on in a d egraded sta te.
Other P ot enti al Proble ms 7-5 Cop yright © 2002 by LSI Logic Corporation. All rights reserved. 7.4 Other P otential Prob lems Ta b l e 7 . 4 des cribes other po tential problems.
7-6 T roub leshooting Cop yright © 2002 by LSI Logic Corporation. All rights reserved. MegaR AID pow er requ irem ent s The ma ximum M egaRAID SCSI 320-0 po wer req uirements are 15 W at 5 V and 3 A.
MegaRAID SC SI 320-0 Hardw are Guide A-1 Cop yright © 2002 by LSI Logic Corporation. All rights reserved. Appendix A A udib le W arnings The Mega RAID SCSI 320-0 R AID controll er has a n onboard tone generator that indicate s ev ents and erro rs.
A-2 Audible Warn ings Cop yright © 2002 by LSI Logic Corporation. All rights reserved..
MegaRAID SC SI 320-0 Hardw are Guide B-1 Cop yright © 2002 by LSI Logic Corporation. All rights reserved. Appendix B Glossa ry Array A grouping of indivi dual disk drives that com bines the storag e space on the disk dri v es into a single segmen t of conti guous sto rage spac e.
B-2 Glossary Cop yright © 2002 by LSI Logic Corporation. All rights reserved. Channel An electr ical path for the transfer of data and control infor mation betwe en a disk a nd a disk controlle r .
B-3 Cop yright © 2002 by LSI Logic Corporation. All rights reserved. provides h igh I/O pe rf or mance a t low cost, but provides lowers data reliabi lity than any of its me mber disk s. Disk Subsystem A c ollection of disks and the hardware th at connec ts them to o ne or more host compu ters.
B-4 Glossary Cop yright © 2002 by LSI Logic Corporation. All rights reserved. Host Computer Any compute r to which di sks ar e directly attached. M ainframes, ser vers, works tations, and pe rsonal computer s can al l be cons idered h ost compu ters.
B-5 Cop yright © 2002 by LSI Logic Corporation. All rights reserved. Mbyte (Megabyte) An abbreviation f or 1,000,0 00 (10 to the sixth power) bytes. One Mbyte equals 1,000 Kbytes (k ilobytes). Multi-threaded Having mul tiple concurre nt or pse udo-con current ex ecution s equen ces.
B-6 Glossary Cop yright © 2002 by LSI Logic Corporation. All rights reserved. RAID Redundant Array of Independe nt Disks. A da ta storage method in which data, alon g with par ity infor mation, i s distr ibuted among two or m ore hard disks (called an array ) to improve perf or mance and reliabi lity .
B-7 Cop yright © 2002 by LSI Logic Corporation. All rights reserved. Redundanc y The provi sion of multipl e intercha ngeable compon ents to per f or m a single f unction to cope w ith f ail ures or err ors. Redundan cy nor mally applies to hardware; d isk mirror ing is a common f or m of ha rdware redundan cy .
B-8 Glossary Cop yright © 2002 by LSI Logic Corporation. All rights reserved. Servic e Pro vider The Ser vice Provider (SP) is a program that resides in the des ktop system or ser ver and is respon sible f or all D MI acti vities.
B-9 Cop yright © 2002 by LSI Logic Corporation. All rights reserved. Ultra320 A sub set of U ltra3 SCSI t hat allows a maxi mum through put of 320 Mbytes/s, which is twice as f as t as Wide Ul tra2 SCSI. Ultra3 20 SCSI provides 3 20 Mbytes/s on a 16-bit connecti on.
B-10 Glos sar y Cop yright © 2002 by LSI Logic Corporation. All rights reserved..
MegaRAID SC SI 320-0 Hardw are Guide IX-1 Cop yright © 2002 by LSI Logic Corporation. All rights reserved. Inde x A Array B-1 Array Con figuration Pla nner 5-14 Array ma nagemen t softwar e B-1 Array.
IX-2 Inde x Cop yright © 2002 by LSI Logic Corporation. All rights reserved. Install Drivers 6-7 Installation st eps Custom 6-2 J Jumpers Setting 6-3 L Linux Red Hat 4-5 Logical d isk B-4 Logical d r.
Inde x IX-3 Cop yright © 2002 by LSI Logic Corporation. All rights reserved. Str iping B- 8 T Technical Sup port 1-vi Termi nator B-8 Troubl eshooti ng 7-1 U Ultra320 and Wide SCS I 4-1 Ultra3-SCSI (320M) B- 9 Unpack 6-2 V Virtual sizing B-9 W WebBIOS Configuration Utility 4-8 Wide SCSI B-9 Windows .
IX-4 Inde x Cop yright © 2002 by LSI Logic Corporation. All rights reserved..
MegaRAID SC SI 320-0 Hardw are Guide 1-1 Cop yright © 2002 b y LSI Logic Corporation. A l l rights reserved. Customer Fee dbac k W e would appre ciate your f e edback on this docum ent. Please cop y the f ollowing pa ge, add your comm ents, and fax it to us at the number shown.
1-2 Custo mer F eedbac k Cop yright © 2002 b y LSI Logic Corporation. A l l rights reserved. Read er’ s Com ment s F ax your comment s to: LSI Logic Cor poratio n T echni cal Publica tions M/S E- 198 F ax: 408.433.43 33 Please te ll us how y ou rate this doc ument: MegaRA ID SCSI 320- 0 Hard- ware Gu ide .
Un punto importante, dopo l’acquisto del dispositivo (o anche prima di acquisto) è quello di leggere il manuale. Dobbiamo farlo per diversi motivi semplici:
Se non hai ancora comprato il LSI MegaRAID SCSI 320-0 Zero-Channel RAID Controller Series 520 è un buon momento per familiarizzare con i dati di base del prodotto. Prime consultare le pagine iniziali del manuale d’uso, che si trova al di sopra. Dovresti trovare lì i dati tecnici più importanti del LSI MegaRAID SCSI 320-0 Zero-Channel RAID Controller Series 520 - in questo modo è possibile verificare se l’apparecchio soddisfa le tue esigenze. Esplorando le pagine segenti del manuali d’uso LSI MegaRAID SCSI 320-0 Zero-Channel RAID Controller Series 520 imparerai tutte le caratteristiche del prodotto e le informazioni sul suo funzionamento. Le informazioni sul LSI MegaRAID SCSI 320-0 Zero-Channel RAID Controller Series 520 ti aiuteranno sicuramente a prendere una decisione relativa all’acquisto.
In una situazione in cui hai già il LSI MegaRAID SCSI 320-0 Zero-Channel RAID Controller Series 520, ma non hai ancora letto il manuale d’uso, dovresti farlo per le ragioni sopra descritte. Saprai quindi se hai correttamente usato le funzioni disponibili, e se hai commesso errori che possono ridurre la durata di vita del LSI MegaRAID SCSI 320-0 Zero-Channel RAID Controller Series 520.
Tuttavia, uno dei ruoli più importanti per l’utente svolti dal manuale d’uso è quello di aiutare a risolvere i problemi con il LSI MegaRAID SCSI 320-0 Zero-Channel RAID Controller Series 520. Quasi sempre, ci troverai Troubleshooting, cioè i guasti più frequenti e malfunzionamenti del dispositivo LSI MegaRAID SCSI 320-0 Zero-Channel RAID Controller Series 520 insieme con le istruzioni su come risolverli. Anche se non si riesci a risolvere il problema, il manuale d’uso ti mostrerà il percorso di ulteriori procedimenti – il contatto con il centro servizio clienti o il servizio più vicino.
