Unidentified Devices, 236 | Dell MD3200, MD3220 instruction

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 might prevent direct communication with the storage array. However, you might 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 might become unresponsive to communication over the connections given by one host. However, you might 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, 236

Contents

Dell PowerVault MD3200 and MD3220 Storage Arrays May Contents Cache Functions and Features Planning MD3200 Series Storage Array Terms and Concepts Virtual Disk Operations Limit Configuring Alert Notifications Out-of-Band and In-Band Management Enabling or Disabling the Event Monitor Managing Host Port Identifiers Host-to-Virtual Disk Mapping Configuring Hot Spare Physical DisksPhysical Disk Security with Self Encrypting Creating a Snapshot Virtual Disk Using Snapshot Using the Simple Path 137122 125 145 Re-creating a Snapshot Virtual Disk 152Creating a Virtual Disk Copy for an Mscs 154 Using DM Multipathing Devices 168 159160 161 Media Errors and Unreadable Sectors 187 Downloading RAID Controller and Nvsram177 178 Power Supply/Cooling Fan Module 204 197202 206 Recovering From an Unresponsive Storage 229 217Storage Array Support Data 220 221 Safety First-For you and Your Array Troubleshooting Storage Array Startup FailureTroubleshooting Loss of Communication Troubleshooting External Connections 253 Introduction About This Document Dell PowerVault MD3200 Series Storage Array Dell PowerVault Modular Disk Storage Manager Other Information you May Need 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 Power Indicator Codes Item LED Type Icon Description 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 Virtual Disk Recovery Virtual Disk CopySource Virtual Disk Target Virtual Disk Using Snapshot and Disk Copy Together Multi-Path Software Preferred and Alternate Controllers and Paths Virtual Disk Ownership Load Balancing Monitoring MD3200 Series System Performance Performance Monitor Table Description Column Headings For more information, see the online help topics Planning MD3200 Series Storage Array Terms and Concepts Configuration Overview User Interface Enterprise Management Window Inheriting the System Settings Select Tools→ Inherit System SettingsSelect Inherit system settings for color and font 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 Naming or Renaming Storage Arrays Name/Rename Storage Arrays dialog appears 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 Battery Settings Setting the Storage Array RAID Controller Module Clocks Configuration About Your Storage Array 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 appears 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 Map later Using Mappings View Changing the Virtual Disk Modification Priority Changing the Virtual Disk Cache Settings 100 Changing the Segment Size of a Virtual Disk 101 102 Changing the I/O TypeSelect Virtual Disk→ Change→ Segment Size 103 Choosing an Appropriate Physical Disk TypeFile system typical Database Multimedia Custom Physical Disk Security with Self Encrypting Disk 104 105 Creating a Security Key 106 Click Create Key 107 108 Changing a Security KeyConfirm Change Security Key window is displayed 109 Saving a Security KeyClick Change Key Unlocking Secure Physical Disks 110 111 Configuring Hot Spare Physical DisksErasing Secure Physical Disks 112 Select Physical disk→ Hot Spare CoverageHot Spare Physical Disk Options window is displayed Hot Spares and Rebuild Global Hot SparesClick Unassign 113 114 Hot Spare OperationHot Spare Drive Protection Criteria for Enclosure Loss Protection RAID Level Enclosure Loss Protection115 Host-to-Virtual Disk Mapping 116 Creating Host-to-Virtual Disk Mappings 117 Modifying and Removing Host-to-Virtual Disk Mapping 118 Changing Controller Ownership of the Virtual Disk 119 120 Removing Host-to-Virtual Disk MappingSelect Virtual Disk→ Change→ Ownership/Preferred Path Select Disk Group→ Change→ Ownership/Preferred Path 121 Restricted Mappings Changing the RAID Level of a Disk GroupSelect Disk Group→ Change→ RAID Level 122 123 124 Changing the RAID Level of a Disk Group 125 Storage Partitioning 126 127 128 Disk Group and Virtual Disk ExpansionSelect Disk Group→ Add Free Capacity Physical Disks Using Free Capacity Using Unconfigured CapacityVirtual Disk Expansion 129 Disk Group Migration Export Disk GroupExporting a Disk Group Non-Exportable Components 131 Import Disk GroupImporting a Disk Group 132 Storage Array Media ScanNon-Importable Components Changing Media Scan Settings 133 Suspending the Media Scan 134 Configuration Premium Feature- Snapshot Virtual Disks 135 Creating a Snapshot Virtual Disk Using the Simple Path 136 About the Simple Path 137 138 139 140 Creating a Snapshot Virtual Disk Using the Advanced PathAbout the Advanced Path 141 142 Creating the Snapshot Using the Advanced Path 143 Specify Virtual Disk Parameters window is displayed 144 Specifying Snapshot Virtual Disk Names 145 Snapshot Repository Capacity 146 147 148 Click Add Physical DisksAdd Physical Disks window closes 149 Re-creating Snapshot Virtual DisksSelect Virtual Disk→ Snapshot→ Re-create Disabling a Snapshot Virtual Disk 150 Preparing Host Servers to Re-create a Snapshot Virtual Disk 151 152 Re-creating a Snapshot Virtual DiskSelect Virtual Disk → Snapshot→ Re-create Configuration Premium Feature- Virtual Disk Copy 153 Creating a Virtual Disk Copy for an Mscs Shared Disk 154 155 Virtual Disk Read/Write PermissionsVirtual Disk Copy Restrictions Creating a Virtual Disk Copy 156 Before you Begin Virtual Disk Copy and Modification OperationsCreate Copy Wizard 157 Preferred RAID Controller Module Ownership Failed RAID Controller ModuleFailed Virtual Disk Copy 158 159 Copy ManagerCopying the Virtual Disk Storage Array Performance During Virtual Disk Copy 160 Setting Copy Priority Stopping a Virtual Disk CopySelect Change→ Copy Priority 161 162 Recopying a Virtual DiskPreparing Host Servers to Recopy a Virtual Disk Recopying the Virtual Disk 163 164 Removing Copy PairsSelect Copy→ Re-Copy 165 166 Configuration Device Mapper Multipath for Linux 167 168 Using DM Multipathing DevicesPrerequisite Steps 169 Device Mapper Configuration StepsScan for Newly Added Virtual Disks 170 171 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 Important Information About Special Partitions Device Mapper Commands Descriptions 173 Limitations and Known Issues 174 QuestionAnswer Troubleshooting175 176 Downloading RAID Controller and Nvsram Packages 177 Downloading Both RAID Controller and Nvsram Firmware 178 Click Transfer 179 Downloading Only Nvsram Firmware 180 181 Select Tools→ Upgrade RAID Controller Module FirmwareUpgrade RAID Controller Module Firmware window appears 182 Downloading Physical Disk Firmware 183 184 AMW, select Advanced→ Maintenance→ Download→ EMM Firmware Downloading MD1200 Series Expansion Module EMM FirmwareDownload Environmental EMM Firmware dialog appears 185 Self-Monitoring Analysis and Reporting Technology Smart 186 Media Errors and Unreadable Sectors 187 188 189 Management Installing Array ComponentsRecommended Tools Installing the Front Bezel Front Bezel OptionalRemoving the Front Bezel 190 Safety Models AMT, E03J, and E04J Hard DrivesRemoving a Drive Blank 191 192 Installing a Drive BlankRemoving a Hard Drive Removing and Installing a Hard Drive 193 Installing a Hard Drive 194 Removing a Hard Drive From a Hard-Drive Carrier 195 196 Installing a Hard Drive Into a Drive Carrier RAID Controller ModuleRemoving a RAID Controller Module Blank 197 Installing a RAID Controller Module Blank 198 Removing a RAID Controller Module 199 200 Installing a RAID Controller ModuleOpening the RAID Controller Module Closing the RAID Controller Module 201 202 RAID Controller Module Backup Battery UnitRemoving the RAID Controller Module Backup Battery Unit Installing the RAID Controller Module Backup Battery Unit 203 204 Power Supply/Cooling Fan ModuleRemoving a Power Supply/Cooling Fan Module Installing a Power Supply/Cooling Fan Module 205 206 Control PanelRemoving the Control Panel 207 Installing the Control Panel 208 209 BackplaneRemoving the Backplane 210 16. Removing and Installing the Backplane-PowerVault MD3200 17. Removing and Installing the Backplane-PowerVault MD3220 Installing the Backplane 212 213 Management Firmware InventoryViewing the Firmware Inventory 214 Microsoft Services Virtual Disk ServiceVolume Shadow-Copy Service Management System Interfaces 216 Troubleshooting Your Storage Array Software Start-Up RoutineDevice Health Conditions 217 Status Icon Description On the Setup tab, select Manage a Storage Array218 219 Additional Status Icons Description Storage Array Support Data 220 221 Automatically Collect the Support Bundle DataEnter the Execution summary 222 Collecting the Physical Disk DataEvent Log Recovery Guru 223 224 Storage Array ProfileSelect Storage Array→ View→ Profile 225 226 Viewing the Logical AssociationsViewing the Physical Associations Finding Nodes 227 Using Go To Select Find all free capacity nodesClick Find Next 228 Recovering From an Unresponsive Storage Array Condition 229 230 231 Locating a Physical Disk 232 233 Locating an Expansion EnclosureSelect Physical Disk→ Blink→ Expansion Enclosure Capturing the State Information 234 SMrepassist Utility 235 236 Recovering From an Unidentified Storage ArrayUnidentified Devices 237 238 Starting or Restarting the Host Context Agent Software 239 240 Troubleshooting Your Array Troubleshooting Loss of CommunicationTroubleshooting External Connections 241 Troubleshooting Power Supply/Cooling Fan Module 242 243 Troubleshooting Array Cooling ProblemsTroubleshooting Expansion Enclosure Management Modules Troubleshooting RAID Controller Modules 244 245 Troubleshooting Hard Drives 246 Troubleshooting Array and Expansion Enclosure Connections 247 Troubleshooting a Wet Storage Array 248 249 Troubleshooting a Damaged ArrayConditions ECC Errors PCI ErrorsInvalid Storage Array Critical Conditions Noncritical Conditions 251 252 Getting Help Contacting DellVisit support.dell.com Click All Support from Support menu 254 Index 255 256 257 258 259 260