AcQuisition Technology Quad M-module Carrier i4000 Guide de l'utilisateur Page 19
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RAID Configuration Features
007-4522-003 3
second controller is updated with new firmware image. When the second controller is
restarted, I/O is again routed to its normal path.
Note: Rolling upgrades will only be supported on SGI IRIX platforms (as listed in
“Supported Platforms” on page 5) and SGI Altix series servers running an SGI Linux
environment of 7.2 or later with SGI ProPack 2.1, or SGI Advanced Linux Environment
2.1 or later with SGI ProPack 2.2 or later.
You may experience brief delays in performance, similar to those experienced in a
failover/failback operation. During the upgrade, you will lose redundancy due to the
fact that each controller is alternately taken offline while it is being flashed with a new
firmware image. The cache on both controllers is flushed and both controllers are placed
into conservative cache mode during the upgrade process.
If a power cycle occurs during the firmware upgrade and the firmware of one controller
is corrupted, the other controller will continue to have access to data when power is
returned. Because firmware is flashed sequentially to each controller it is not possible for
the firmware of both controllers to be corrupted by a power failure. Check the firmware
levels of each controller if you suspect that a controller’s firmware image has been
corrupted. If the firmware levels are not at the desired version, repeat the rolling upgrade
process.
SAN Mapping 256
Firmware releases 8.40 and later support up to 256 host nodes. TPM 1.5 and later provide
changes required for 256 host node support. TPM 1.4 and earlier releases support up to
64 host nodes.
Drive Sizing Algorithm
On new configurations (only), a new drive sizing algorithm reduces the maximum
amount of capacity that the RAID controller truncates from disk drives larger than 80GB
on 2-Gb/s FFx2 RAID controllers running 9.x or later. On a 146 GB disk drive, the new
algorithm increases the usable capacity by about 5 GB per drive.
- 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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