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Chapter 3: Creating and Configuring RAID Arrays
Configuring Logical Drives 3-15
3.2.5 Logical Drive Roaming
The Online Roaming capability allows users to physically move
the member disks of a configured LD to another Galaxy storage
system without disruptions to service. This applies when
duplicating a test/research environment or physically moving a
configured array to start an application on another installation site.
Concerns & Things to Know
1. Drive roaming is convenient for moving members of a logical
drive. However, it is very important not to remove the wrong
drives. Removing the wrong drives can destroy data in
adjacent logical drives.
2. When an LD is shutdown, the status of its members changes
to “OFFLINED.”
3. When an LD is shutdown, and then its members removed,
there will not be an event such as “Unexpected Select
Timeout.” The “Drive Removed” event will prompt instead. The
status of the removed drives is “MISSING,” instead of
“FAILED.”
4. When all members of a shutdown LD are removed, an “All
Member Drive Removed” message will prompt.
5. Roaming is not allowed on an LD performing a cloning job.
6. When an LD is shutdown, its associated LUN mapping and
logical partition information is also disabled. When restarted,
LUN mapping and partition information is also restored.
7. An Incomplete array (LD with missing members) will not be
restarted.
8. Restart with a Fatally-failed LD:
8-1. Fatal failure, such as using two wrong drives (not the
correct members) in a RAID5 array during roaming, can
disable an LD. When this happens, there is no need to
reset a system. Once you insert the correct disk drives,
firmware will recognize their presence after scanning
drive channels, and the LD can be restarted.
8-2. If you already have a faulty drive in a RAID5 LD and an
incorrect drive, system will also consider it as fatally
failed. The LD status will return to the “one-drive-failed”
state after you insert the correct member. Then you can
proceed with rebuilding the LD.
8-3. If the roaming LD is indicated as “Fatal Failed,”
shutdown the LD and find out drives that are marked as
“MISSING.” When all correct members are present and
their status highlighted as “GOOD,” the Restart
command will also become available.
9. When inserting member drives from another RAID system, it
is not necessary to follow the original slot locations. Logical
configuration is stored on each member drive’s 256MB
reserved space.
- Galaxy HDX4 Web GUI 1
- Contact Information 2
- Copyright 2010 4
- Table of Contents 5
- User’s Manual Overview 6
- Usage Conventions 8
- Chapter 1 11
- Introduction 11
- 1.1 Galaxy Web GUI Overview 12
- 1.2 Featured Highlights 13
- 1.2.2 System View 14
- 1.2.3 Graphical Icons 14
- Event Categories 15
- 1.2.4 Event Notification 17
- • Access Requirements 18
- 1.2.6 Password Protection 18
- 1.3 Conceptual Foundation 20
- Chapter 2 23
- Starting Up 23
- Storage Architecture 24
- 2.3. Screen Elements 31
- 2.4. Logout 32
- 2.5. Background Information 32
- 2.6. Definition of Terms 33
- Chapter 3 36
- NOTE: 41
- WARNING! 41
- 3.2.1 Add Drive 45
- 3.2.2 Migrate 46
- 3.2.3 Expand 48
- 3.2.5 Logical Drive Roaming 50
- Shutting Down and Restarting 51
- Figure 3-1: Drive Tray Bezel 52
- IMPORTANT! 54
- 3.4.1 Create Partitions 56
- TIPS: 57
- 3.5.1 List/Delete: 59
- 3.5.2 Create LUN 60
- 3.5.3 Create WWN Name 61
- 3.6 Channel Configuration 66
- 3.6.3 Channel ID 67
- 3.6.4 Channel Group 69
- Chapter 4 72
- 4.1.2 Regenerate Parity 74
- 4.1.3 Copy & Replace 76
- 4.2 Manual Rebuild 77
- 4.3.1 Spare Drive 78
- 4.3.2 Reserved Space 80
- 4.3.3 Media Scan 81
- 4.3.4 Clone 81
- 4.3.5 Drive Utilities 83
- 4.4 Task Schedule 84
- Chapter 5 86
- Configuration Parameters 86
- Network Protocols 90
- 5.2 Trunk Group 91
- CANNOT be selected: 94
- 5.3 iSNS Server List 95
- 5.4 Controller Parameters 95
- 5.5 System Parameters 97
- 5.6 Password Setting 99
- 5.7 Threshold Parameters 99
- 5.8 Redundant Parameters 100
- 5.9 Trigger Parameters 101
- 5.10 Host-side Parameters 102
- 5.11 Drive-side Parameters 104
- CAUTION! 105
- IMPORTANT! 105
- Detect and Perpetual Clone 106
- Detect and Clone + Replace 106
- Disabled 106
- Detect Only: 106
- 5.12 Disk Array Parameters 110
- Chapter 6 114
- Event Notification 114
- 6.1 Agent 115
- 6.2 Email 116
- 6.3 SNMP 117
- 6.4 SNMP Community 118
- 6.5 LAN Broadcast 119
- 6.7 SNTP 122
- 6.8 Event Log 122
- Rorke Data, An Avnet Company 124
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