Hp Compaq Integrated Smart Array Controller User Manual download pdf (Page 125)

Understanding Drive Arrays B-19

Compaq Confidential – Need to Know Required

Writer: CDresden Project: Compaq Integrated Smart Array Controller User Guide Comments:

Part Number: 153236-001 File Name: i-appb Understanding Drive Arrays.doc Last Saved On: 8/27/99 11:35 AM

OK to remove drive if not part

of fault-tolerant configuration

OK to remove failed drive

DO NOT remove drive

OnlineOFF Drive Access Drive Failure

Drive

Indicators

Figure B-11. Hot-plug drive replacement conditions for Wide Ultra2 SCSI

hot-plug drives

1 2 ... 120 121 122 123 124 125 126 127 128 129 130 ... 146 147

User Guide 1
Part Number 153236-001 1
Compaq Computer Corporation 1
Contents 3
Chapter 2 4
Chapter 3 4
Chapter 4 4
Chapter 5 4
Chapter 6 5
Appendix A 6
Appendix B 6
Appendix C 7
About This Guide 9
Symbols in Text 10
Symbols on Equipment 10
Rack Stability 11
Getting Help 12
Compaq Website 13
Compaq Authorized Reseller 13
Controller Features 15
Controller Interface 16
Drive Array Technology 17
Fault Tolerance 18
Drive Movement 18
Read-Cache Memory 18
Wide Ultra2 SCSI Technology 19
Configuration Utilities 20
Controller 23
External Cabling 25
External Cables 26
Configuring the Controller 28
Updating Firmware 29
ROMPaq Diskettes 30
Running System ROMPaq 31
Running Options ROMPaq 33
Option ROM Configuration 35
Initial Start Screen 36
Create Logical Drive Screen 37
Confirmation Screen 38
Before Installing Drivers 42
Materials Needed 42
Operating Systems 43
(PAS) Diskettes 44
C:\DIR\SPXXXX.exe 45
A:\README 45
Novell NetWare 46
Installation Procedure 47
Microsoft Windows NT 4.0 49
README.BAT 50
A:\README.BAT 50
A:\SETUP 51
Microsoft Windows 2000 54
SmartStart 55
The Internet 55
Installing the Driver 56
SCO OpenServer 5 57
Compaq SCO OpenServer 5 58
SCO OpenServer 5 (Non-Compaq) 58
SCO UnixWare 2.1 or Later 59
IBM OS/2 60
Controller Ordering 62
Partitioning 63
Controller Drive 63
Command Line Switches 64
BASEDEV=CPQARRAY.ADD /A:2 /I 65
Banyan VINES 7.0 or Later 66
Before You Begin 70
Running the Compaq 70
Array Configuration Utility 70
ACU Online 71
Microsoft Windows NT 71
Configuration Wizards 72
Online Help 72
Main Configuration Screen 73
Menu Bar 74
Controller Selection Frame 75
More Information Bar 76
Drive View Buttons 76
Controller Buttons 76
Array Buttons 77
Logical Drive Button 77
Controller Settings Screen 78
Create Drive Array Screen 79
Array Accelerator Frame 81
Stripe Size 81
Table 6-1 82
Stripe Size Fault Tolerance 82
Autoconfiguration 82
Custom Configuration 83
Drive Rebuild 85
Priority Settings 86
Accelerator Ratio 86
Expand an Array 86
Add or Configure Spare Drives 86
■ Interim Recovery 87
■ Ready for Recovery 87
Handling Disk Drive Failures 88
Configuration Procedures 90
Grouping Physical Drives 92
Figure 6-20. Example Array B 93
Expanding Capacity 97
Capacity Extension 100
Extending Logical Drives 101
Online Migration 102
Online Stripe Size Migration 103
Errors and Warnings 104
Electrostatic Discharge 105
Grounding Methods 106
Understanding Drive Arrays 107
Drive Arrays 110
Logical Drives 110
Drive Array Benefits 111
Table B-1 112
RAID Level Characteristics 112
P = Parity 113
Drive Mirroring and Striping 114
(RAID 1 and RAID 0+1) 114
No Fault Tolerance (RAID 0) 115
Online Spares 115
Performance Enhancement 116
Optimized Request Management 117
Bus Master Data Transfers 118
Adding Storage Capacity 119
■ Hot-plug hard drives 121
Data Reliability 122
Dynamic Sector Repairing 123
Drive Parameter Tracking 123
Drive Failure Alert Features 123
Interim Data Recovery 123
Automatic Data Recovery 124
Hot-Plug Drives 124
Recovering from Drive Failure 126
Recognizing a Drive Failure 127
Replacing a Failed Drive 129
Compromised Fault Tolerance 131
Questions and Answers 133

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