Adaptec SAS RAID Controllers Instalační příručka stáhnout pdf (Strana 113)

Appendix F Selecting the Best RAID Level 99

Drive segment size is limited to the size of the smallest disk drive in the array. For

example, three 250 GB disk drives and three 400 GB disk drives comprise two equal-

sized RAID 5 arrays with 500 GB of stored data and 250 GB of parity data. The RAID

50 array can therefore contain 1000 GB (2 x 500 GB) of stored data and 500 GB of

parity data.

FIGURE F-7 RAID 50 Arrays

In this example, P represents the distributed parity data.

1 2 ... 108 109 110 111 112 113 114 115 116 117 118 ... 147 148

Sun StorageTekSAS RAID HBA 1
Contents 3
▼ To View the Event Log 78 8
Contents ix 9
Declaration of Conformity 115 10
Index 131 10
Before You Read This Document 11
Related Documentation 12
Training 13
Documentation Comments 13
HBA Overview 15
HBA Features 16
Component Layout 17
Requirements 19
System Interoperability 20
Server Support 21
Software Support 21
Observing ESD and Handling 23
Precautions 23
Installation Task Map 26
■ ESD wrist strap 28
SPARC System 30
Installing the HBA 31
Connecting Disk Drives 33
Testing the HBA Installation 34
No Logical Drives Found 38
Next Steps 39
Removing the Hardware 39
▼ To Remove the HBA 40
Creating an Array 42
Making the Array Bootable 45
Setting the Boot HBA 45
Install the Solaris OS 48
▼ To Create a Logical Drive 49
# ./arcconf GETCONFIG 1 LD 51
# devfsadm 51
Array on an x64 System 53
Preparing to Install an OS 54
■ “Next Steps” on page 47 59
Installing the Solaris OS 60
Operating System 63
Linux OS 64
Known Issues 67
BIOS Utility Issues 68
Performance Issues 68
Chapter 8 Known Issues 55 69
Configuration Rules 71
■ Maximum length of 1 meter 72
HBA Specifications 73
Environmental Specifications 74
DC Power Requirements 74
Current Requirements 74
Performance Specifications 74
Connector Pin Definitions 75
SATA Pin-Out 76
SATA Power Pin-Out 77
Introduction to the BIOS RAID 80
Configuration Utility 80
Hot-Plug Addition Conditions 81
Conditions 81
▼ To Start the ACU 84
■ Delete an array 85
Settings 87
General HBA Settings 88
Select Utility 89
Utilities 90
▼ To View the Event Log 92
Troubleshooting 93
Silencing the Alarm 94
Appendix D Troubleshooting 81 95
Best Practices 97
Making New Connections 98
Enclosures 99
Failure Conditions 99
Failures 100
Discovering Drives 101
Order of Logical Drives 101
RAID Logical Devices 102
Appendix E Best Practices 89 103
Selecting the Best RAID Level 105
Understanding Drive Segments 106
Nonredundant Arrays (RAID 0) 106
RAID 1 Arrays 107
RAID 1 Enhanced Arrays 108
RAID 10 Arrays 109
RAID 5 Arrays 110
RAID 5EE Arrays 111
RAID 50 Arrays 112
RAID 6 Arrays 114
RAID 60 Arrays 115
Migrating RAID Levels 116
APPENDIX 117
About SAS 118
About Phys 119
About SAS Ports 120
About SAS Addresses 120
About SAS Connectors 121
About SAS Cables 121
About SAS Connection Options 122
SAS Expander Connections 123
Declaration of Conformity 129
Safety Precautions 131
Battery Warning 132
System Unit Cover 133
Rack System Instructions 133
Laser Compliance Notice 133
CD and DVD Devices 133
Mesures de sécurité 133
Symboles 134
Modification du matériel 134
Conformité SELV 134
Couvercle de l'unité 135
Périphériques CD et DVD 135
Vorschriften 136
Anschluss des Netzkabels 137
Warnung bezüglich Batterien 137
Gehäuseabdeckung 137
Anweisungen zur Rack-Montage 137
Normativas de seguridad 138
Class 1 Laser Product 140
Luokan 1 Laserlaite 140
Klasse 1 Laser Apparat 140
Laser Klasse 1 140
FCC Class B Notice 143
GOST-R Certiﬁcation Mark 144
Index 133 147

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