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Dell MD3220, MD3200 owner manual Media Errors and Unreadable Sectors, 187

Models: MD3220 MD3200

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Media Errors and Unreadable Sectors

If the RAID controller detects a media error while accessing data from a physical disk that is a member of a disk group with a redundant RAID level (RAID 1, RAID 5 or RAID 10), the controller tries to recover the data from peer disks in the disk group and uses recovered data to correct the error. If the controller encounters an error while accessing a peer disk, it is unable to recover the data and affected sectors are added to the unreadable sector log maintained by the controller. Other conditions under which sectors are added to the unreadable sector log include:

•A media error is encountered when trying to access a physical disk that is a member of a nonredundant disk group (RAID 0 or degraded RAID 1, RAID 5 or RAID 10).

•An error is encountered on source disks during rebuild.

NOTE: Data on an unreadable sector is no longer accessible.

Management: Firmware Downloads

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Dell MD3220, MD3200 owner manual Media Errors and Unreadable Sectors, 187

Contents

Dell PowerVault MD3200 and MD3220 Storage Arrays May Contents Planning MD3200 Series Storage Array Terms and Concepts Cache Functions and FeaturesVirtual Disk Operations Limit Out-of-Band and In-Band Management Configuring Alert NotificationsManaging Host Port Identifiers Enabling or Disabling the Event MonitorPhysical Disk Security with Self Encrypting Configuring Hot Spare Physical DisksHost-to-Virtual Disk Mapping 125 Creating a Snapshot Virtual Disk UsingSnapshot Using the Simple Path 137 122154 145Re-creating a Snapshot Virtual Disk 152 Creating a Virtual Disk Copy for an Mscs161 Using DM Multipathing Devices 168159 160178 Media Errors and Unreadable Sectors 187Downloading RAID Controller and Nvsram 177206 Power Supply/Cooling Fan Module 204197 202221 Recovering From an Unresponsive Storage 229217 Storage Array Support Data 220Troubleshooting External Connections Safety First-For you and Your ArrayTroubleshooting Storage Array Startup Failure Troubleshooting Loss of Communication253 About This Document IntroductionDell PowerVault Modular Disk Storage Manager Dell PowerVault MD3200 Series Storage ArrayOther Information you May Need Introduction Overview Planning About Your Storage ArrayFront-Panel Features and Indicators Hardware FeaturesPlanning About Your Storage Array Item Indicator, Button, or Icon Description Connector Back Panel Features and Indicators Hard Drive Indicators Hard-Drive Indicator PatternsDrive-Status Indicator Pattern Condition Power Supply and Cooling Fan FeaturesPower Indicator Codes Item LED Type Icon Description Power Indicator CodesRAID Controller Modules Planning RAID Controller ModulesFunction RAID Controller Module Connectors and FeaturesItem Component Function Battery Backup Unit RAID Controller Module-Additional FeaturesComponent Function Event Description System Password ResetStorage Array Thermal Shutdown Shutdown Threshold TypeWrite-Through Cache Cache Functions and FeaturesCache Mirroring Write-Back CachePhysical Disks, Virtual Disks, and Disk Groups Planning MD3200 Series Storage Array Terms and ConceptsPhysical Disk States Physical DisksVirtual Disks and Disk Groups Self-Monitoring Analysis and Reporting TechnologyVirtual Disk States RAID LevelsRAID Controller Virtual Disk States Description RAID RAID Level UsageRAID Background Initialization Segment SizeVirtual Disk Operations Virtual Disk InitializationMedia Verification Consistency CheckCycle Time Segment Size Migration Disk Group OperationsVirtual Disk Operations Limit RAID Level MigrationDisk Group Expansion Virtual Disk Capacity ExpansionDisk Group Defragmentation RAID Background Operations PriorityDisk Group Operations Limit Disk Migration Virtual Disk Migration and Disk RoamingPlanning MD3200 Series Storage Array Terms and Concepts Disk Roaming Advanced FeaturesHost Types Host Server-to-Virtual Disk MappingSnapshot Virtual Disks Snapshot Repository Virtual Disk Target Virtual Disk Virtual Disk RecoveryVirtual Disk Copy Source Virtual DiskMulti-Path Software Using Snapshot and Disk Copy TogetherVirtual Disk Ownership Preferred and Alternate Controllers and PathsLoad 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 User Interface Configuration OverviewEnterprise Management Window Array Management Window Inheriting the System SettingsSelect Tools→ Inherit System Settings Select Inherit system settings for color and fontConfiguration Overview Out-of-Band and In-Band Management Configuration About Your Storage ArrayOut-of-Band Management Adding Storage Arrays Storage ArraysIn-Band Management Manual Addition of a Storage Array Automatic Discovery of Storage ArraysSelect Edit→ Add Storage Array Setting Up Your Storage Array AMW, select Storage Array→ Blink→ Storage Array Locating Storage ArraysName/Rename Storage Arrays dialog appears Naming or Renaming Storage ArraysPassword Setting a PasswordType the New password Viewing Storage Array Connections Password GuidelinesSelect Edit→ Remove→ Storage Array Adding/Editing a Comment to an Existing Storage ArrayRemoving Storage Arrays Select Edit→ CommentFailover Alert Display Enabling Premium FeaturesChanging Expansion Enclosure ID Number Changing the Cache Settings on the Storage ArrayChanging the Enclosure Order in the Physical Pane Select All storage arrays Configuring Alert NotificationsSelect Configure Alerts AMW, select Storage Array→ Change→ Enclosure OrderConfiguring 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 Windows Enabling or Disabling the Event MonitorLinux Configuring Host Access Configuration About Your HostDefining a Host Using the Mappings TabSelect Mappings→ Define→ Host Configuration About Your Host Select Mappings→ Remove Removing Host AccessManaging Host Groups Creating a Host GroupSelect Mappings→ Move Moving a Host to a Different Host GroupAdding a Host to a Host Group Removing a Host From a Host GroupHost Topology Removing a Host GroupLinux Starting or Stopping the Host Context AgentWindows Click Action→ Start Data Path ProtectionAdd Host Port Identifier dialog appears Managing Host Port IdentifiersConfiguration About Your Host Creating Disk Groups and Virtual Disks Configuration Disk Groups and Virtual DisksIntroduction Create Disk Group window is displayed Creating Disk GroupsConfiguration Disk Groups and Virtual Disks Creating Virtual Disks Locating a Disk GroupConfiguration Disk Groups and Virtual Disks Changing the Virtual Disk Modification Priority Map later Using Mappings ViewChanging the Virtual Disk Cache Settings 100 101 Changing the Segment Size of a Virtual DiskSelect Virtual Disk→ Change→ Segment Size Changing the I/O Type102 File system typical Database Multimedia Custom Choosing an Appropriate Physical Disk Type103 104 Physical Disk Security with Self Encrypting Disk105 106 Creating a Security Key107 Click Create KeyConfirm Change Security Key window is displayed Changing a Security Key108 Click Change Key Saving a Security Key109 110 Unlocking Secure Physical DisksErasing Secure Physical Disks Configuring Hot Spare Physical Disks111 Hot Spare Physical Disk Options window is displayed Select Physical disk→ Hot Spare Coverage112 113 Hot Spares and RebuildGlobal Hot Spares Click UnassignHot Spare Drive Protection Hot Spare Operation114 115 Enclosure Loss ProtectionCriteria for Enclosure Loss Protection RAID Level 116 Host-to-Virtual Disk Mapping117 Creating Host-to-Virtual Disk Mappings118 Modifying and Removing Host-to-Virtual Disk Mapping119 Changing Controller Ownership of the Virtual DiskSelect Virtual Disk→ Change→ Ownership/Preferred Path Removing Host-to-Virtual Disk Mapping120 121 Select Disk Group→ Change→ Ownership/Preferred Path122 Restricted MappingsChanging the RAID Level of a Disk Group Select Disk Group→ Change→ RAID Level123 124 125 Changing the RAID Level of a Disk Group126 Storage Partitioning127 Select Disk Group→ Add Free Capacity Physical Disks Disk Group and Virtual Disk Expansion128 129 Using Free CapacityUsing Unconfigured Capacity Virtual Disk ExpansionNon-Exportable Components Disk Group MigrationExport Disk Group Exporting a Disk GroupImporting a Disk Group Import Disk Group131 Non-Importable Components Storage Array Media Scan132 133 Changing Media Scan Settings134 Suspending the Media Scan135 Configuration Premium Feature- Snapshot Virtual Disks136 Creating a Snapshot Virtual Disk Using the Simple Path137 About the Simple Path138 139 About the Advanced Path Creating a Snapshot Virtual Disk Using the Advanced Path140 141 142 143 Creating the Snapshot Using the Advanced Path144 Specify Virtual Disk Parameters window is displayed145 Specifying Snapshot Virtual Disk Names146 Snapshot Repository Capacity147 Add Physical Disks window closes Click Add Physical Disks148 Select Virtual Disk→ Snapshot→ Re-create Re-creating Snapshot Virtual Disks149 150 Disabling a Snapshot Virtual Disk151 Preparing Host Servers to Re-create a Snapshot Virtual DiskSelect Virtual Disk → Snapshot→ Re-create Re-creating a Snapshot Virtual Disk152 153 Configuration Premium Feature- Virtual Disk Copy154 Creating a Virtual Disk Copy for an Mscs Shared DiskVirtual Disk Copy Restrictions Virtual Disk Read/Write Permissions155 156 Creating a Virtual Disk Copy157 Before you BeginVirtual Disk Copy and Modification Operations Create Copy Wizard158 Preferred RAID Controller Module OwnershipFailed RAID Controller Module Failed Virtual Disk CopyCopying the Virtual Disk Copy Manager159 160 Storage Array Performance During Virtual Disk Copy161 Setting Copy PriorityStopping a Virtual Disk Copy Select Change→ Copy PriorityPreparing Host Servers to Recopy a Virtual Disk Recopying a Virtual Disk162 163 Recopying the Virtual DiskSelect Copy→ Re-Copy Removing Copy Pairs164 165 166 167 Configuration Device Mapper Multipath for LinuxPrerequisite Steps Using DM Multipathing Devices168 Scan for Newly Added Virtual Disks Device Mapper Configuration Steps169 170 Add a New Partition to Device Mapper Create a New fdisk Partition on a Multipath Device Node171 Important Information About Special Partitions Create a File System on a Device Mapper PartitionMount a Device Mapper Partition Ready for Use173 Device Mapper Commands Descriptions174 Limitations and Known Issues175 TroubleshootingQuestionAnswer 176 177 Downloading RAID Controller and Nvsram Packages178 Downloading Both RAID Controller and Nvsram Firmware179 Click Transfer180 Downloading Only Nvsram FirmwareUpgrade RAID Controller Module Firmware window appears Select Tools→ Upgrade RAID Controller Module Firmware181 182 183 Downloading Physical Disk Firmware184 185 AMW, select Advanced→ Maintenance→ Download→ EMM FirmwareDownloading MD1200 Series Expansion Module EMM Firmware Download Environmental EMM Firmware dialog appears186 Self-Monitoring Analysis and Reporting Technology Smart187 Media Errors and Unreadable Sectors188 Recommended Tools Management Installing Array Components189 190 Installing the Front BezelFront Bezel Optional Removing the Front Bezel191 Safety Models AMT, E03J, and E04JHard Drives Removing a Drive BlankRemoving a Hard Drive Installing a Drive Blank192 193 Removing and Installing a Hard Drive194 Installing a Hard Drive195 Removing a Hard Drive From a Hard-Drive Carrier196 197 Installing a Hard Drive Into a Drive CarrierRAID Controller Module Removing a RAID Controller Module Blank198 Installing a RAID Controller Module Blank199 Removing a RAID Controller ModuleOpening the RAID Controller Module Installing a RAID Controller Module200 201 Closing the RAID Controller ModuleRemoving the RAID Controller Module Backup Battery Unit RAID Controller Module Backup Battery Unit202 203 Installing the RAID Controller Module Backup Battery UnitRemoving a Power Supply/Cooling Fan Module Power Supply/Cooling Fan Module204 205 Installing a Power Supply/Cooling Fan ModuleRemoving the Control Panel Control Panel206 207 208 Installing the Control PanelRemoving the Backplane Backplane209 210 17. Removing and Installing the Backplane-PowerVault MD3220 16. Removing and Installing the Backplane-PowerVault MD3200212 Installing the BackplaneViewing the Firmware Inventory Management Firmware Inventory213 214 Management System Interfaces Microsoft ServicesVirtual Disk Service Volume Shadow-Copy Service216 217 Troubleshooting Your Storage Array SoftwareStart-Up Routine Device Health Conditions218 On the Setup tab, select Manage a Storage ArrayStatus Icon Description Additional Status Icons Description 219220 Storage Array Support DataEnter the Execution summary Automatically Collect the Support Bundle Data221 Event Log Collecting the Physical Disk Data222 223 Recovery GuruSelect Storage Array→ View→ Profile Storage Array Profile224 225 Viewing the Physical Associations Viewing the Logical Associations226 227 Finding Nodes228 Using Go ToSelect Find all free capacity nodes Click Find Next229 Recovering From an Unresponsive Storage Array Condition230 231 232 Locating a Physical DiskSelect Physical Disk→ Blink→ Expansion Enclosure Locating an Expansion Enclosure233 234 Capturing the State Information235 SMrepassist UtilityUnidentified Devices Recovering From an Unidentified Storage Array236 237 238 239 Starting or Restarting the Host Context Agent Software240 241 Troubleshooting Your ArrayTroubleshooting Loss of Communication Troubleshooting External Connections242 Troubleshooting Power Supply/Cooling Fan ModuleTroubleshooting Expansion Enclosure Management Modules Troubleshooting Array Cooling Problems243 244 Troubleshooting RAID Controller Modules245 246 Troubleshooting Hard Drives247 Troubleshooting Array and Expansion Enclosure Connections248 Troubleshooting a Wet Storage ArrayConditions Troubleshooting a Damaged Array249 Critical Conditions ECC ErrorsPCI Errors Invalid Storage Array251 Noncritical Conditions252 Click All Support from Support menu Getting HelpContacting Dell Visit support.dell.com254 255 Index256 257 258 259 260