Unidentified Devices, 248 | Dell MD3200, MD3220 specs

Unidentified Devices

An unidentified node or device occurs when MDSM cannot access a new storage array. Causes for this error include network connection problems, the storage array is turned off, or the storage array does not exist.

NOTE: Before beginning any recovery procedure, make sure that the host context agent software is installed and running. If you started the host before the host was connected to the storage array, the host context agent software is not able to find the storage array. If so, make sure that the connections are tight, and restart the host context agent software.

•If a storage array is managed by using both out-of-band management and in-band management using the same host, a management network connection problem may prevent direct communication with the storage array. However, you may still be able to manage the storage array over the in-band connections. The opposite situation can also occur.

•If a storage array is managed through more than one host, it is possible that the storage array may become unresponsive to communication over the connections given by one host. However, you may still be able to manage the storage array over the connections provided by another host.

Recovering From an Unidentified Storage Array

To recover from an unidentified storage array:

1Make sure that the network connection to the storage management station is operating.

2Make sure that the controllers are installed and that the power is turned on to the storage array. Correct any existing problems before continuing.

3If you have an in-band storage array, use the following procedure. Click Refresh after each step to check the results:

a Make sure that the host context agent software is installed and running. If you started the host before the host was connected to the controllers in the storage array, the host context agent software is not able to find the controllers. If so, make sure that the connections are tight, and restart the host context agent software.

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Troubleshooting: Your Storage Array Software

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Dell MD3200, MD3220 owner manual Unidentified Devices, Recovering From an Unidentified Storage Array, 248

Contents

Dell PowerVault MD3200 and MD3220 Storage Arrays Page Contents RAID Controller Module Connectors Cache Functions and Features Virtual Disk Operations Limit Configuring Alert Notifications Out-of-Band and In-Band Management Creating Disk Groups and Virtual Disks Enabling or Disabling the Event MonitorManaging Host Port Identifiers Host-to-Virtual Disk Mapping Configuring Hot Spare Physical DisksPhysical Disk Security with Self 126 129130 131 Creating a Snapshot Virtual Disk Using 142 Creating a Snapshot Virtual Disk Using146 151 160 161Types of Virtual Disk Copies 164 165 Using DM Multipathing Devices 180 174176 179 Self-Monitoring Analysis and Reporting 201202 203 RAID Controller Module Backup Battery Unit 214 Power Supply/Cooling Fan Module 216218 221 Recovering From an Unresponsive Storage 241 232233 Collecting the Physical Disk Data 234 Safety First-For you and Your Array 253 Troubleshooting Power Supply/Cooling 254Troubleshooting Expansion Enclosure Troubleshooting a Damaged Array 261 Getting Help Contacting Dell Index Contents Introduction About This Document MD3200 Series Storage Array Dell PowerVault Modular Disk Storage ManagerOther Information you May Need Introduction Introduction Planning About Your Storage Array Overview Hardware Features Front-Panel Features and Indicators Planning About Your Storage Array Item Indicator, Button, or Icon Description Connector Back Panel Features and Indicators Hard-Drive Indicator Patterns Hard Drive Indicators Power Supply and Cooling Fan Features Drive-Status Indicator Pattern Condition Power Indicator Codes and Features Planning RAID Controller Modules RAID Controller Modules RAID Controller Module Connectors and Features Function Item Component Function Component Function RAID Controller Module-Additional FeaturesBattery Backup Unit System Password Reset Storage Array Thermal ShutdownShutdown Threshold Type Event Description Cache Functions and Features Cache MirroringWrite-Back Cache Write-Through Cache Planning MD3200 Series Storage Array Terms and Concepts Physical Disks, Virtual Disks, and Disk Groups Physical Disks Physical Disk States Self-Monitoring Analysis and Reporting Technology Virtual Disks and Disk Groups RAID Controller Virtual Disk States Description RAID LevelsVirtual Disk States RAID Level Usage RAID RAID Segment Size Virtual Disk OperationsVirtual Disk Initialization Background Initialization Cycle Time Consistency CheckMedia Verification Disk Group Operations Virtual Disk Operations LimitRAID Level Migration Segment Size Migration Virtual Disk Capacity Expansion Disk Group Expansion Disk Group Operations Limit RAID Background Operations PriorityDisk Group Defragmentation Virtual Disk Migration and Disk Roaming Disk Migration Planning MD3200 Series Storage Array Terms and Concepts Advanced Features Disk Roaming Snapshot Virtual Disks Host Server-to-Virtual Disk MappingHost Types Snapshot Repository Virtual Disk Target Virtual Disk Virtual Disk CopySource Virtual Disk Multi-Path Software Virtual Disk RecoveryUsing Snapshot and Disk Copy Together Preferred and Alternate Controllers and Paths Virtual Disk Ownership Load Balancing Monitoring MD3200 Series System Performance AMW, select Storage Array→ Monitor Performance Click Settings Performance Monitor Table Description Column Headings Planning MD3200 Series Storage Array Terms and Concepts Configuration Overview User Interface Enterprise Management Window Inheriting the System Settings Array Management Window Configuration Overview Out-of-Band Management Configuration About Your Storage ArrayOut-of-Band and In-Band Management In-Band Management Storage ArraysAdding Storage Arrays Select Edit→ Add Storage Array Automatic Discovery of Storage ArraysManual Addition of a Storage Array Setting Up Your Storage Array Locating Storage Arrays AMW, select Storage Array→ Blink→ Storage Array Name/Rename Storage Arrays dialog is displayed AMW Setup tab, select Rename Storage ArrayNaming or Renaming Storage Arrays Type the New password Setting a PasswordPassword Password Guidelines Viewing Storage Array Connections Adding/Editing a Comment to an Existing Storage Array Removing Storage ArraysSelect Edit→ Comment Select Edit→ Remove→ Storage Array Enabling Premium Features Failover Alert Display Changing the Enclosure Order in the Physical Pane Changing the Cache Settings on the Storage ArrayChanging Expansion Enclosure ID Number Configuring Alert Notifications Select Configure AlertsAMW, select Storage Array→ Change→ Enclosure Order Select All storage arrays Configuring E-mail Alerts Configuration About Your Storage Array Configuring Snmp Alerts Configuration About Your Storage Array Battery Settings Setting the Storage Array RAID Controller Module Clocks Configuration Event Monitor Linux Enabling or Disabling the Event MonitorWindows Configuration About Your Host Configuring Host Access Select Mappings→ Define→ Host Using the Mappings TabDefining a Host Configuration About Your Host Removing Host Access Managing Host GroupsCreating a Host Group Select Mappings→ Remove Moving a Host to a Different Host Group Adding a Host to a Host GroupRemoving a Host From a Host Group Select Mappings→ Move Removing a Host Group Host Topology Windows Starting or Stopping the Host Context AgentLinux Data Path Protection Click Action→ Start Managing Host Port Identifiers Add Host Port Identifier dialog is displayed Configuration About Your Host Configuration Disk Groups and Virtual Disks Creating Disk Groups and Virtual Disks Creating Disk Groups Introduction Create Disk Group window is displayed Configuration Disk Groups and Virtual Disks Locating a Disk Group Creating Virtual Disks Configuration Disk Groups and Virtual Disks 100 Map later Using Mappings ViewChanging the Virtual Disk Modification Priority Changing the Virtual Disk Cache Settings 101 102 Changing the Segment Size of a Virtual Disk 103 104 Changing the I/O TypeSelect Virtual Disk→ Change→ Segment Size 105 Choosing an Appropriate Physical Disk TypeFile system typical Database Multimedia Custom Physical Disk Security with Self Encrypting Disk 106 Shows how to interpret the security status of a disk group 107 Creating a Security Key 108 Click Create Key 109 110 Changing a Security KeyConfirm Change Security Key window is displayed 111 Saving a Security KeyClick Change Key Validate Security Key 112 113 Unlocking Secure Physical DisksErasing Secure Physical Disks 114 Configuring Hot Spare Physical DisksSelect Physical disk→ Hot Spare Coverage Hot Spares and Rebuild Hot Spare Physical Disk Options window is displayedClick Unassign 115 Global Hot Spares Hot Spare OperationHot Spare Drive Protection 116 Enclosure Loss Protection 117 118 Criteria for Enclosure Loss Protection RAID Level 119 Host-to-Virtual Disk MappingCreating Host-to-Virtual Disk Mappings 120 Modifying and Removing Host-to-Virtual Disk Mapping 121 Changing Controller Ownership of the Virtual Disk Removing Host-to-Virtual Disk MappingSelect Virtual Disk→ Change→ Ownership/Preferred Path 122 Select Disk Group→ Change→ Ownership/Preferred Path 123 Removing a Host-to-Virtual Disk Mapping Using Linux Dmmp Changing the RAID Level of a Disk GroupSelect Disk Group→ Change→ RAID Level 124 125 Operating System Highest LUN Restricted Mappings126 127 128 Changing the RAID Level of a Disk Group 129 Storage Partitioning 130 131 Disk Group and Virtual Disk ExpansionSelect Disk Group→ Add Free Capacity Physical Disks 132 Using Free CapacityVirtual Disk Expansion Using Unconfigured Capacity Disk Group MigrationExport Disk Group Non-Exportable Components Import Disk Group Exporting a Disk GroupImporting a Disk Group 134 Non-Importable Components 135 136 Changing Media Scan SettingsStorage Array Media Scan Suspending the Media Scan 137 138 Configuration Premium Feature- Snapshot Virtual Disks 139 140 Scheduling a Snapshot Virtual DiskCommon Reasons for Scheduling a Snapshot Virtual Disk Guidelines for Creating Snapshot Schedules 141 Creating a Snapshot Virtual Disk Using the Simple Path Enabling and Disabling Snapshot SchedulesScheduled Snapshot Icons 142 About the Simple Path 143 144 145 146 Creating a Snapshot Virtual Disk Using the Advanced PathAbout the Advanced Path 147 148 Creating the Snapshot Using the Advanced Path 149 Specify Virtual Disk Parameters window is displayed 150 Specifying Snapshot Virtual Disk Names 151 Snapshot Repository Capacity 152 153 154 Click Add Physical DisksAdd Physical Disks window closes Disabling a Snapshot Virtual Disk 155 Preparing Host Servers to Re-create a Snapshot Virtual Disk 156 Re-creating Snapshot Virtual Disks Snapshot RollbackSelect Virtual Disk→ Snapshot→ Re-create 157 Rules and Guidelines for Performing a Snapshot Rollback 158 Command Line Options Protecting Against a Failed Snapshot RollbackPrevious Versions of the MD Storage Manager Starting a Snapshot Rollback Resuming a Snapshot Rollback RollbackConfirm Rollback Snapshot Virtual Disk dialog is displayed 160 Canceling a Snapshot Rollback 161 162 Configuration Premium Feature- Virtual Disk Copy 163 164 Types of Virtual Disk CopiesOffline Copy Online Copy 165 166 Creating a Virtual Disk Copy for an Mscs Shared DiskVirtual Disk Read/Write Permissions Virtual Disk Copy Restrictions 167 168 Creating a Virtual Disk CopyBefore you Begin Virtual Disk Copy and Modification Operations Create Copy WizardFailed Virtual Disk Copy 169 Preferred RAID Controller Module Ownership Failed RAID Controller ModuleCopy Manager 170 Copying the Virtual Disk 171 Storage Array Performance During Virtual Disk Copy 172 Setting Copy Priority Stopping a Virtual Disk CopySelect Change→ Copy Priority 173 174 Recopying a Virtual DiskPreparing Host Servers to Recopy a Virtual Disk Re-Copying a Virtual Disk 175 Removing Copy Pairs Select Copy→ Re-CopySelect Copy→ Remove Copy Pairs 176 177 178 Configuration Device Mapper Multipath for Linux 179 180 Using DM Multipathing DevicesPrerequisite Steps 181 Device Mapper Configuration StepsScan for Newly Added Virtual Disks 182 183 Create a New fdisk Partition on a Multipath Device NodeAdd a New Partition to Device Mapper Create a File System on a Device Mapper Partition Mount a Device Mapper PartitionReady for Use Blacklist Local Drive in Multi-path Driver Important Information About Special Partitions 185 Device Mapper Commands Descriptions 186 Limitations and Known Issues 187 Question Answer Troubleshooting188 Downloading RAID Controller and Nvsram Packages 189 Downloading Both RAID Controller and Nvsram Firmware 190 Click Transfer 191 Downloading Only Nvsram Firmware 192 193 Select Tools→ Upgrade RAID Controller Module FirmwareUpgrade RAID Controller Module Firmware window is displayed 194 Downloading Physical Disk Firmware 195 196 AMW, select Advanced→ Maintenance→ Download→ EMM Firmware Downloading MD1200 Series Expansion Module EMM FirmwareDownload Environmental EMM Firmware dialog is displayed 197 198 Media Errors and Unreadable SectorsSelf-Monitoring Analysis and Reporting Technology Smart 199 200 201 Management Installing Array ComponentsRecommended Tools Installing the Front Bezel Front Bezel OptionalRemoving the Front Bezel 202 Safety Models AMT, E03J, and E04J Hard DrivesRemoving a Hard-Drive Blank 203 204 Installing a Hard-Drive BlankRemoving a Hard Drive Removing and Installing a Hard Drive 205 Installing a Hard Drive 206 Removing a Hard Drive From a Hard-Drive Carrier 207 208 Installing a Hard Drive Into a Hard-Drive Carrier RAID Controller ModuleRemoving a RAID Controller Module Blank 209 Installing a RAID Controller Module Blank 210 Removing a RAID Controller Module 211 212 Installing a RAID Controller ModuleOpening the RAID Controller Module Closing the RAID Controller Module 213 214 RAID Controller Module Backup Battery UnitRemoving the RAID Controller Module Backup Battery Unit Installing the RAID Controller Module Backup Battery Unit 215 216 Power Supply/Cooling Fan ModuleRemoving a Power Supply/Cooling Fan Module Installing a Power Supply/Cooling Fan Module 217 218 Control PanelRemoving the Control Panel 219 Installing the Control Panel 220 221 BackplaneRemoving the Backplane 222 16. Removing and Installing the Backplane-PowerVault MD3200 17. Removing and Installing the Backplane-PowerVault MD3220 Installing the Backplane 224 225 Management Firmware InventoryViewing the Firmware Inventory 226 Microsoft Services Virtual Disk ServiceVolume Shadow-Copy Service Management System Interfaces 228 Troubleshooting Your Storage Array Software Start-Up RoutineDevice Health Conditions 229 Status Icon Description On the Setup tab, select Manage a Storage Array230 231 Additional Status Icons Description Storage Array Support Data 232 233 Automatically Collect the Support Bundle DataEnter the Execution summary 234 Collecting the Physical Disk DataEvent Log Recovery Guru 235 236 Storage Array ProfileSelect Storage Array→ View→ Profile 237 238 Viewing the Logical AssociationsViewing the Physical Associations Finding Nodes 239 Using Go To Select Find all free capacity nodesClick Find Next 240 Recovering From an Unresponsive Storage Array Condition 241 242 243 Locating a Physical Disk 244 245 Locating an Expansion EnclosureSelect Physical Disk→ Blink→ Expansion Enclosure Capturing the State Information 246 SMrepassist Utility 247 248 Recovering From an Unidentified Storage ArrayUnidentified Devices 249 250 Starting or Restarting the Host Context Agent Software 251 252 Troubleshooting Your Array Troubleshooting Loss of CommunicationTroubleshooting External Connections 253 Troubleshooting Power Supply/Cooling Fan Module 254 255 Troubleshooting Array Cooling ProblemsTroubleshooting Expansion Enclosure Management Modules Troubleshooting RAID Controller Modules 256 257 Troubleshooting Hard Drives 258 Troubleshooting Array and Expansion Enclosure Connections 259 Troubleshooting a Wet Storage Array 260 261 Troubleshooting a Damaged ArrayConditions ECC Errors PCI ErrorsInvalid Storage Array Critical Conditions Noncritical Conditions 263 264 Getting Help Contacting DellVisit support.dell.com Click All Support from Support menu 266 Index 267 268 269 270 271 272