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Chapter 7: Technology Background
207
Ranges of Disk Array Expansion
The Windows 2000 and Windows XP (32-bit) operating systems support a 10-
byte LBA format. As a result, these OSes can only recognize 4 billion addresses.
If you create a logical drive using the default 512 B sector size, the logical drive
will be limited to 2 TB of data, even if there is more space available on your disk
drives.
This limitation does not apply to Windows XP (64-bit), 2003 Server, Vista, and
Linux OSes with the 2.6 kernel. Linux OSes with the 2.4 kernel do not support
variable sector sizes, therefore you cannot apply the solution described here to
those OSes.
RAID 0 RAID 50 • •
RAID 10 • •
RAID 5 •
RAID 1E • •
RAID 1 •
* Decreases the existing redundancy
Important
• The Target disk array may require more disk drives than the
Source disk array
• If the Target disk array requires an EVEN number of disk
drives but the Source disk array has an ODD number, ADD a
disk drive as part of the migration process
• You cannot reduce the number of disk drives in your disk
array, even if the Target disk array requires fewer disk drives
than the Source disk array
• RAID 1 (mirroring) works with two drives only. Only a single-
drive RAID 0 disk array or a single-drive JBOD can migrate to
RAID 1. Other RAID Levels use too many drives to migrate
• You cannot migrate a disk array when it is Critical or
performing activities such as Synchronizing, Rebuilding, and
PDM
• You cannot migrate to RAID 6. You must create a new disk
array and move your data to it
From To
Increase Redundancy
Capacity Performance Add Lose
- Product Manual 1
- Copyright 2
- Trademarks 2
- Recommendations 2
- VTrak M610p Product Manual 10
- Contents 11
- About This Manual 13
- VTrak Overview 14
- Architectural Description 15
- Features and Benefits 15
- Operational Features 16
- Specifications 17
- Warranty and Support 18
- FCC Statement 18
- CE Statement 18
- MIC Statement 18
- Chapter 2: VTrak Installation 19
- Mounting VTrak in a Rack 20
- Installing Disk Drives 22
- Serial ATA Disk Drive 24
- Data Path 25
- Management Path 25
- Connecting the Power 28
- LED will remain dark 29
- Chapter 3: VTrak Setup 31
- Setting up VTrak with the CLI 33
- Setting up VTrak with the CLU 34
- Exiting the CLU 35
- Logging into WebPAM PROe 36
- Chapter 3: Setup 37
- Selecting a Language 38
- Creating a Disk Array 38
- Automatic 39
- Advanced 41
- Logging out of WebPAM PROe 42
- Perusing the Interface 49
- Using the Header 50
- Using Tree View 51
- Using Management View 52
- Viewing the Event Frame 52
- Viewing Other Subsytems 54
- Logging into a Subsystem 54
- Hiding the Other Subsystems 54
- Working with Subsystems 55
- Viewing the Runtime Event Log 56
- Saving the Runtime Event Log 57
- Viewing NVRAM Events 57
- Saving NVRAM Events 58
- Running Background Activities 60
- Running Media Patrol 60
- Viewing Scheduled Activities 61
- Scheduling an Activity 61
- Deleting a Scheduled Activity 62
- Viewing Lock Status 62
- Setting the Lock 63
- Renewing the Lock 63
- Making Your Own User Settings 66
- Changing Your Own Password 67
- Creating a User 68
- Viewing User Sessions 69
- Logging out Other Users 69
- Managing Storage Services 73
- LUN Mapping Parameters 74
- Managing Software Services 75
- Making Web Server Settings 76
- Changing the Startup Setting 77
- Stopping Web Server service 77
- Adding Trap Sinks 79
- Deleting Trap Sinks 79
- Deleting Netsend Recipients 82
- Stopping Netsend service 82
- Exporting the User Database 83
- Importing a User Database 84
- Managing Controllers 90
- Adjustable items 91
- Upgradable items 91
- Viewing Controller Statistics 92
- Making Controller Settings 92
- Clearing an Orphan Watermark 93
- Managing Enclosures 94
- Viewing Enclosure Information 95
- Making Enclosure Settings 96
- Viewing FRU VPD Information 96
- Testing the Buzzer 98
- Adjustable Items 100
- Clearing Statistics 101
- Managing Disk Arrays 104
- Deleting a Disk Array 108
- Disk Array Operational Status 109
- Creating a Logical Drive 110
- Making Disk Array Settings 110
- Deleting a Logical Drive 111
- Migrating a Disk Array 112
- Rebuilding a Disk Array 113
- Running PDM on a Disk Array 114
- Transitioning a Disk Array 115
- Managing Logical Drives 117
- Logical Drive Status 118
- Logical Drive Synchronization 118
- Making Logical Drive Settings 119
- Initializing a Logical Drive 119
- Running Redundancy Check 120
- Table Definitions 122
- Managing Spare Drives 123
- Creating a Spare Drive 124
- Deleting Spare Drive 125
- Making Spare Drive Settings 125
- Running Spare Check 126
- Logging into the CLU 130
- Accessing Online Help 132
- Logging out of the CLU 132
- Running Quick Setup 133
- Managing the Subsystem 134
- Resetting the Lock 135
- Releasing the Lock 135
- Managing the Controllers 136
- Locating the Controller 137
- Managing the Enclosure 138
- Viewing Blower Status 139
- Viewing Voltage Sensor Status 139
- Checking the Batteries 140
- Reconditioning a Battery 140
- Locating an Enclosure 141
- Managing Physical Drives 142
- Viewing Advanced Information 143
- Locating a Physical Drive 144
- Accepting an Incomplete Array 151
- Enabling PDM on a Disk Array 151
- Running PDM 153
- Locating a Disk Array 154
- Setting Read Cache Policy 157
- Locating a Logical Drive 158
- Making Automatic Settings 159
- Making Manual Settings 159
- Managing SCSI Connections 160
- Setting SCSI Termination 161
- Managing Background Activity 162
- Working with the Event Viewer 164
- Clearing NVRAM Events 165
- Deleting a Spare Drive 168
- Working with LUN Mapping 169
- Managing Users 170
- Changing a User’s Password 171
- Deleting a User 172
- Making Email Settings 173
- Making SLP Settings 174
- Making Webserver Settings 174
- Making Telnet Settings 175
- Making SNMP Settings 175
- Managing SNMP Trap Sinks 176
- Making CIM Settings 177
- Making Netsend Settings 177
- Managing Netsend Recipients 178
- Deleting a Recipient 179
- Netsend Requirements 179
- Flashing through TFTP 180
- Restoring Factory Defaults 182
- Shutting Down the Subsystem 183
- Restarting the Subsystem 185
- Making Buzzer Settings 186
- Chapter 6: Maintenance 187
- Updating the Firmware 190
- Replacing a Power Supply 192
- Replacing a Cooling Unit Fan 193
- Replacing a Cache Battery 196
- Replacing a RAID Controller 199
- Introduction to RAID 201
- RAID 0 – Stripe 202
- RAID 1 – Mirror 203
- RAID 1E – Enhanced Mirror 204
- RAID 10 – Mirror + Stripe 207
- RAID 50 Axles 208
- Choosing a RAID Level 210
- Choosing Stripe Size 213
- Choosing Sector Size 213
- Cache Policy 214
- Write Cache Policy 215
- Adaptive Writeback Cache 215
- Capacity Coercion 216
- Initialization 216
- Hot Spare Drive(s) 217
- RAID Level Migration 217
- Media Patrol 220
- PDM Triggers 221
- Transition 222
- Automatic Transition 224
- Manual Transition 224
- Chapter 8: Troubleshooting 225
- VTrak is Beeping 226
- LEDs Display Amber or Red 227
- Drive Status Indicators 228
- Back of Enclosure 229
- CLU Reports a Problem 232
- Checking a Reported Component 233
- WebPAM PROe Reports a Problem 234
- Event Notification Response 237
- When a Physical Drive Fails 251
- With a Hot Spare Drive 251
- Without a Hot Spare Drive 252
- Rebuild Operation 252
- Incomplete Array 254
- Physical Drive Problems 255
- Enclosure Problems 257
- Connection Problems 260
- SCSI Connections 261
- Termination 262
- Chapter 9: Support 265
- Contacting Technical Support 267
- United States 268
- The Netherlands 268
- Attn: Technical Support 269
- Limited Warranty 270
- Returning Product For Repair 271
- SNMP MIB Files 273
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