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88 Managing the Storage Solution
Expanding an Array
!
Caution
You must stop all host I/O operations prior to deleting an array.
The Expand Array feature is used to increase the capacity of an existing array. An array can be expanded
to a maximum of 16 drives. Only one array can be expanded at a time.
NOTE
No configuration changes can be made to the arrays, logical drives, or SAN LUN Mapping while an
expansion operation is in progress.
NOTE
You cannot mix SAS and SATA disk drives in the same disk array. Also if you have a mixture of SAS
and SATA drives in the enclosure, each array of either SATA or SAS drive types must have a dedicated
spare of like type.
During the expansion process, data is re-striped across a new set of data drives, and new parity is
calculated and written if necessary for fault tolerant arrays. If the array is a fault tolerant array, such
as RAID level 1, 10, 5, or 50, it will remain fault tolerant during the expansion.
Should a disk drive fail in a fault tolerant array during the expansion, the expand operation will continue
as normal at which time it will flag the drive as failed and use the data and parity information to create
the new data and parity stripe. After the expansion is complete, and if you had a hot spare designated,
the automatic rebuild operation will commence bringing the non-fault tolerant expanded array back
to a fault tolerant condition.
If a second drive failure occurs during expansion, that condition is not recoverable and you will have a
total loss of data. You may wish to consider backing up the data prior to expanding an array. Although
there is a level of protection during this operation without the backup, the best insurance is a valid
backup.
NOTE
After the array expansion process has completed, if you are expanding for the purposes of new
drive space you will need to create the appropriate logical drive(s) and define them in your operating
system. However, if the expansion is intended to increase the existing logical drive capacity you will
need to perform a LUN Expansion. Afterwards a third-party volume/partition software product will
be necessary to manipulate any existing partitions.
1. Stop all host I/O operations.
2. Locate and click on the <Array_Name> you wish to expand. This will open the Array screen.
3. From the Array screen, click the Expand Array tab., see Figure 71 ”Array Screen - Expand Array
Tab Selected”.
4. Following the sequenced steps, click the Array Expansion Type pull-down menu, choose the
type of expansion applicable to your array.
5. Select the drives that will be used to expand the array.
6. Verify the changes you are about to make by examining the “Before Expansion” and “After
Expansion” analysis.
7. If your settings are correct, click the EXPAND button.
- StorView 1
- RAID User Guide 1
- MAXDATA SR1202 M1 1
- 2 Contents 2
- Contents 3
- 8 SAN LUN Mapping 63 4
- MAXDATA SR1202 M1 – StorView 5
- 6 Contents 6
- 1 Preface 9
- 10 Preface 10
- 2 Introduction 11
- License Manager 12
- 3 StorView Quick Tour 13
- Enclosure Section 14
- Locate Enclosure 17
- Mixed Drive Types 18
- Server Sidebar Section 21
- How to Use this Document 23
- 4 Embedded StorView Setup 25
- Using Dynamic IP (DHCP) 26
- Using Static IP 26
- Getting a New IP Address 26
- 5 Getting Started 27
- 28 Getting Started 28
- Configuring E-MAIL Notices 29
- Deleting an E-MAIL Addressee 30
- Configuring SNMP Traps 31
- Changing the Password 32
- Monitoring Setting 33
- Additional Monitoring Servers 34
- 6 Storage Assistant 35
- 36 Storage Assistant 36
- 38 Storage Assistant 38
- 40 Storage Assistant 40
- Creating Disk Arrays 43
- Create the Array 45
- Initializing the Array 49
- Adding Hot Spare Drives 51
- Assigning a Global Spare 52
- Figure 32. Drive Panel Screen 53
- Figure 33. Make Spare Screen 53
- Assigning a Dedicated Spare 54
- Removing a Spare 55
- Auto Spare 55
- Create the Logical Drive 56
- Figure 38. Main Screen 57
- Saving the Configuration 59
- Figure 45. File Name Screen 61
- 8 SAN LUN Mapping 63
- 64 SAN LUN Mapping 64
- Creating a SAN LUN Mapping 65
- 66 SAN LUN Mapping 66
- Figure 48. Main Screen 66
- Deleting a SAN LUN Mapping 68
- Modifying a SAN LUN Mapping 68
- 70 SAN LUN Mapping 70
- 9 Controller Environmentals 71
- Operations 72
- Update Controller Firmware 73
- 74 Controller Environmentals 74
- Overview 75
- Advanced Settings 75
- Identity 76
- Fault Tolerance 77
- Host Ports 79
- Advanced Array Functions 81
- Modifying Arrays 82
- Verify Parity 83
- Identifying Drive Members 85
- Rebuilding an Array 86
- Figure 69. Drive Panel Screen 87
- Expanding an Array 88
- Trust an Array 89
- Restoring the Configuration 91
- Clearing the Configuration 93
- Advanced Drive Options 94
- Locate Drive 95
- Viewing Unassigned Free Space 96
- Expanding a Logical Drive 96
- Figure 85. Main Screen 97
- Deleting a Logical Drive 98
- Execution Throttle 101
- Scatter/Gather 101
- Additional StorView Functions 102
- Take Control Monitoring 103
- 13 Support and Updates 105
- 106 Support and Updates 106
- Caution 107
- 14 Event Logs 109
- 110 Event Logs 110
- Figure 97. Main Screen 110
- Figure 98. Event Log Screen 111
- 112 Event Logs 112
- Figure 100. Main Screen 113
- Figure 101. Event Log Screen 113
- 114 Event Logs 114
- Figure 104. Main Screen 115
- Figure 105. Event Log Screen 115
- Operating System Event Log 116
- List of Events 116
- Drive and Array Events 120
- Controller Port Events 125
- Enclosure Events 127
- NOTE 130
- Failed Drives Codes 133
- 15 Statistics 135
- Read-Ahead Statistics 138
- Command Cluster Statistics 139
- Introduction 141
- Sequential Access 142
- Access Size 142
- RAID 5 Sub-Array 143
- Multiple Drive Failures 143
- 17 Troubleshooting 145
- 150 Index 150
- 152 Index 152
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