AcQuisition Technology Quad M-module Carrier i4000 Guide de l'utilisateur Page 85
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Drive State Reporting
007-4522-003 69
System Drive Affinity and Programmable LUN Mapping
System drive affinity and programmable LUN mapping are configuration features that
work together to define how the host accesses the available storage space.
System drive affinity allows system drives to be assigned to any combination of
controller and host ports as follows:
• Configurations with one RAID controller that has two host ports (through a switch,
for example) can use system drive affinity to define affinity of each system drive to
one or both host ports.
• System drives that are not owned by a controller/host port are not accessible.
Note: The SGI supported topology for multi-path failover is Multi-Port; use the TPM
software to set the topology.
Caution: If two systems independently access the same volume of data, and the
operating system does not support file locking, data corruption may occur. To avoid this,
create two or more volumes (or LUNs) and configure each volume to be accessed by one
system only.
Programmable LUN mapping lets you assign any LUN ID (even multiple LUN IDs) to
any system drive on each port, or configure system drive assignments without specifying
the LUN, defaulting to the current mapping algorithm. System drives with the “all”
affinity are mapped to a LUN ID on every controller/host port.
Drive State Reporting
The RAID controller sends information about the status of each physical disk drive to the
array management software. The controller records the operational state of each drive
and a list of available target ID addresses. The controller determines which drives are
present and what target IDs are available. Then, it determines the status of the drives that
are present. If the disk drive is present, the location of the disk drive is considered
configured and the operational state of the disk drive is then determined. If the controller
determines the disk drive at the available target ID location is absent, the location of the
!
- Storage System User’s Guide 1
- Record of Revision 3
- Contents 5
- 007-4522-003 vii 7
- About This Guide 13
- Related Publications 14
- Product Support 15
- Reader Comments 16
- 1. Storage System Overview 17
- RAID Configuration Features 18
- SAN Mapping 256 19
- Drive Sizing Algorithm 19
- 4 007-4522-003 20
- 1: Storage System Overview 20
- JBOD Configuration Features 21
- Availability Features 21
- Supported Platforms 21
- Storage System Enclosure 22
- 007-4522-003 7 23
- Enclosure Components 24
- • Dummy drive carrier modules 25
- Operators (Ops) Panel 27
- PSU/Cooling Module 28
- 007-4522-003 13 29
- Figure 1-7 PSU/Cooling Module 29
- RAID LRC I/O Modules 30
- Host 1Host 0 31
- RAID Loopback LRC I/O Modules 32
- JBOD LRC I/O Module 34
- Drive Carrier Module 35
- Drive Carrier Handle 36
- Anti-tamper lock 37
- Unlocked 37
- Indicator 37
- Enclosure Bay Numbering 38
- Tower Enclosure Bay Numbering 40
- Storage System Rack 42
- 007-4522-003 27 43
- 28 007-4522-003 44
- 007-4522-003 29 45
- 007-4522-003 31 47
- Storage System Tower 48
- 007-4522-003 33 49
- 34 007-4522-003 50
- Connecting to a Host 51
- 36 007-4522-003 52
- Grounding Issues 53
- 38 007-4522-003 54
- System/ESI fault LED 55
- Power on LED 55
- PSU/cooling/temperature 55
- Alarm mute switch 55
- 40 007-4522-003 56
- Powering On the Rack 58
- 007-4522-003 43 59
- ON shows 59
- I”=on, “O”=off) 59
- Powering Off 60
- 007-4522-003 45 61
- 46 007-4522-003 62
- 007-4522-003 47 63
- Configuration on Disk (COD) 64
- Drive Roaming 65
- Data Caching 66
- 007-4522-003 51 67
- RAID Disk Topologies 68
- This configuration: 69
- 4. Using the RAID Controller 75
- RAID Levels 76
- 007-4522-003 61 77
- Array Condition Meaning 79
- RAID Levels and Availability 80
- Disk Topologies 81
- RAID (base) enclosure 83
- First expansion enclosure 83
- (Enclosure ID 1) 83
- (Enclosure ID 2) 83
- System Drives 84
- Drive State Reporting 85
- State Description 86
- Automatic Rebuild 87
- 72 007-4522-003 88
- 4: Using the RAID Controller 88
- 007-4522-003 73 89
- 5. Troubleshooting 91
- RAID Guidelines 92
- 007-4522-003 77 93
- 78 007-4522-003 94
- 7 address ranges 97
- 82 007-4522-003 98
- PSU good LED 100
- DC ouput fail LED 100
- AC input fail LED 100
- Fan fail LED 100
- RAID LRC I/O Module LEDs 101
- Expansion 103
- JBOD LRC I/O Module LEDs 105
- Drive Carrier Module LEDs 106
- present 107
- Thermal Control 108
- Using Test Mode 109
- 94 007-4522-003 110
- 5: Troubleshooting 110
- Adding a Drive Carrier Module 111
- Torx screwdriver 112
- 007-4522-003 99 115
- A. Technical Specifications 119
- Component Weight 120
- Specification Value 120
- Environmental Requirements 121
- Power Requirements 122
- LRC I/O Module Specifications 123
- Factor Requirement 124
- B. Regulatory Information 125
- Attention 126
- VCCI Class 1 Statement 126
- Class A Warning for Taiwan 127
- 114 007-4522-003 130
- 116 007-4522-003 132
- 118 007-4522-003 134
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