Dell MD3200, MD3220 owner manual 100

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To change the virtual disk cache settings:

1In the AMW, select the Logical tab and select a virtual disk

2In the toolbar, select Virtual DiskChangeCache Settings. The Change Cache Settings window is displayed.

3Select one or more virtual disks.

To select nonadjacent virtual disks, press <Ctrl> click. To select adjacent virtual disks, press <Shift> click. To select all of the available virtual disks, click Select All.

4In the Select cache properties area, you can select:

Enable read caching—to enable read caching.

Enable dynamic cache read prefetch—to enable dynamic cache read prefetch.

Enable write caching—to enable write caching.

Enable write caching with mirroring—to mirror cached data across two redundant RAID controller modules that have the same cache size.

Enable write caching without batteries—to permit write caching to continue even if the RAID controller module batteries are discharged completely, not fully charged, or are not present.

CAUTION: Possible loss of data – Selecting the Enable write caching without batteries option lets write caching continue even when the batteries are discharged completely or are not fully charged. Typically, write caching is turned off temporarily by the RAID controller module until the batteries are charged. If you select this option and do not have a universal power supply for protection, you could lose data. In addition, you could lose data if you do not have RAID controller module batteries and you select the Enable write caching without batteries option.

NOTE: When the Optional RAID controller module batteries option is enabled, the Enable write caching does not appear. The Enable write caching without batteries is still available, but it is not checked by default.

NOTE: Cache is automatically flushed after the Enable write caching check box is disabled.

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Configuration: Disk Groups and Virtual Disks

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Contents Dell PowerVault MD3200 and MD3220 Storage Arrays May Contents Cache Functions and Features Planning MD3200 Series Storage Array Terms and ConceptsVirtual Disk Operations Limit Configuring Alert Notifications Out-of-Band and In-Band ManagementEnabling or Disabling the Event Monitor Managing Host Port IdentifiersPhysical Disk Security with Self Encrypting Configuring Hot Spare Physical DisksHost-to-Virtual Disk Mapping Creating a Snapshot Virtual Disk Using Snapshot Using the Simple Path 137122 125145 Re-creating a Snapshot Virtual Disk 152Creating a Virtual Disk Copy for an Mscs 154Using DM Multipathing Devices 168 159160 161Media Errors and Unreadable Sectors 187 Downloading RAID Controller and Nvsram177 178Power Supply/Cooling Fan Module 204 197202 206Recovering From an Unresponsive Storage 229 217Storage Array Support Data 220 221Safety First-For you and Your Array Troubleshooting Storage Array Startup FailureTroubleshooting Loss of Communication Troubleshooting External Connections253 Introduction About This DocumentDell PowerVault MD3200 Series Storage Array Dell PowerVault Modular Disk Storage ManagerOther Information you May Need Introduction Planning About Your Storage Array OverviewHardware Features Front-Panel Features and IndicatorsPlanning About Your Storage Array Item Indicator, Button, or Icon Description Connector Back Panel Features and Indicators Hard-Drive Indicator Patterns Hard Drive IndicatorsPower Supply and Cooling Fan Features Drive-Status Indicator Pattern ConditionPower Indicator Codes Power Indicator Codes Item LED Type Icon DescriptionPlanning RAID Controller Modules RAID Controller ModulesRAID Controller Module Connectors and Features FunctionItem Component Function Battery Backup Unit RAID Controller Module-Additional FeaturesComponent Function System Password Reset Storage Array Thermal ShutdownShutdown Threshold Type Event DescriptionCache Functions and Features Cache MirroringWrite-Back Cache Write-Through CachePlanning MD3200 Series Storage Array Terms and Concepts Physical Disks, Virtual Disks, and Disk GroupsPhysical Disks Physical Disk StatesSelf-Monitoring Analysis and Reporting Technology Virtual Disks and Disk GroupsVirtual Disk States RAID LevelsRAID Controller Virtual Disk States Description RAID Level Usage RAIDRAID Segment Size Virtual Disk OperationsVirtual Disk Initialization Background InitializationMedia Verification Consistency CheckCycle Time Disk Group Operations Virtual Disk Operations LimitRAID Level Migration Segment Size MigrationVirtual Disk Capacity Expansion Disk Group ExpansionDisk Group Defragmentation RAID Background Operations PriorityDisk Group Operations Limit Virtual Disk Migration and Disk Roaming Disk MigrationPlanning MD3200 Series Storage Array Terms and Concepts Advanced Features Disk RoamingHost Types Host Server-to-Virtual Disk MappingSnapshot Virtual Disks Snapshot Repository Virtual Disk Virtual Disk Recovery Virtual Disk CopySource Virtual Disk Target Virtual DiskUsing Snapshot and Disk Copy Together Multi-Path SoftwarePreferred and Alternate Controllers and Paths Virtual Disk OwnershipLoad 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 InterfaceEnterprise Management Window Inheriting the System Settings Select Tools→ Inherit System SettingsSelect Inherit system settings for color and font Array Management WindowConfiguration 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 Locating Storage Arrays AMW, select Storage Array→ Blink→ Storage ArrayNaming or Renaming Storage Arrays Name/Rename Storage Arrays dialog appearsPassword Setting a PasswordType the New password Password Guidelines Viewing Storage Array ConnectionsAdding/Editing a Comment to an Existing Storage Array Removing Storage ArraysSelect Edit→ Comment Select Edit→ Remove→ Storage ArrayEnabling Premium Features Failover Alert DisplayChanging Expansion Enclosure ID Number Changing the Cache Settings on the Storage ArrayChanging the Enclosure Order in the Physical Pane Configuring Alert Notifications Select Configure AlertsAMW, select Storage Array→ Change→ Enclosure Order Select All storage arraysConfiguring 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 Configuration About Your Host Configuring Host AccessDefining a Host Using the Mappings TabSelect Mappings→ Define→ Host Configuration About Your Host Removing Host Access Managing Host GroupsCreating a Host Group Select Mappings→ RemoveMoving a Host to a Different Host Group Adding a Host to a Host GroupRemoving a Host From a Host Group Select Mappings→ MoveRemoving a Host Group Host TopologyLinux Starting or Stopping the Host Context AgentWindows Data Path Protection Click Action→ StartManaging Host Port Identifiers Add Host Port Identifier dialog appearsConfiguration About Your Host Configuration Disk Groups and Virtual Disks Creating Disk Groups and Virtual DisksCreating Disk Groups Introduction Create Disk Group window is displayedConfiguration Disk Groups and Virtual Disks Locating a Disk Group Creating Virtual DisksConfiguration Disk Groups and Virtual Disks Map later Using Mappings View Changing the Virtual Disk Modification PriorityChanging the Virtual Disk Cache Settings 100 Changing the Segment Size of a Virtual Disk 101Select Virtual Disk→ Change→ Segment Size Changing the I/O Type102 File system typical Database Multimedia Custom Choosing an Appropriate Physical Disk Type103 Physical Disk Security with Self Encrypting Disk 104105 Creating a Security Key 106Click Create Key 107Confirm Change Security Key window is displayed Changing a Security Key108 Click Change Key Saving a Security Key109 Unlocking Secure Physical Disks 110Erasing Secure Physical Disks Configuring Hot Spare Physical Disks111 Hot Spare Physical Disk Options window is displayed Select Physical disk→ Hot Spare Coverage112 Hot Spares and Rebuild Global Hot SparesClick Unassign 113Hot Spare Drive Protection Hot Spare Operation114 115 Enclosure Loss ProtectionCriteria for Enclosure Loss Protection RAID Level Host-to-Virtual Disk Mapping 116Creating Host-to-Virtual Disk Mappings 117Modifying and Removing Host-to-Virtual Disk Mapping 118Changing Controller Ownership of the Virtual Disk 119Select Virtual Disk→ Change→ Ownership/Preferred Path Removing Host-to-Virtual Disk Mapping120 Select Disk Group→ Change→ Ownership/Preferred Path 121Restricted Mappings Changing the RAID Level of a Disk GroupSelect Disk Group→ Change→ RAID Level 122123 124 Changing the RAID Level of a Disk Group 125Storage Partitioning 126127 Select Disk Group→ Add Free Capacity Physical Disks Disk Group and Virtual Disk Expansion128 Using Free Capacity Using Unconfigured CapacityVirtual Disk Expansion 129Disk Group Migration Export Disk GroupExporting a Disk Group Non-Exportable ComponentsImporting a Disk Group Import Disk Group131 Non-Importable Components Storage Array Media Scan132 Changing Media Scan Settings 133Suspending the Media Scan 134Configuration Premium Feature- Snapshot Virtual Disks 135Creating a Snapshot Virtual Disk Using the Simple Path 136About the Simple Path 137138 139 About the Advanced Path Creating a Snapshot Virtual Disk Using the Advanced Path140 141 142 Creating the Snapshot Using the Advanced Path 143Specify Virtual Disk Parameters window is displayed 144Specifying Snapshot Virtual Disk Names 145Snapshot Repository Capacity 146147 Add Physical Disks window closes Click Add Physical Disks148 Select Virtual Disk→ Snapshot→ Re-create Re-creating Snapshot Virtual Disks149 Disabling a Snapshot Virtual Disk 150Preparing Host Servers to Re-create a Snapshot Virtual Disk 151Select Virtual Disk → Snapshot→ Re-create Re-creating a Snapshot Virtual Disk152 Configuration Premium Feature- Virtual Disk Copy 153Creating a Virtual Disk Copy for an Mscs Shared Disk 154Virtual Disk Copy Restrictions Virtual Disk Read/Write Permissions155 Creating a Virtual Disk Copy 156Before you Begin Virtual Disk Copy and Modification OperationsCreate Copy Wizard 157Preferred RAID Controller Module Ownership Failed RAID Controller ModuleFailed Virtual Disk Copy 158Copying the Virtual Disk Copy Manager159 Storage Array Performance During Virtual Disk Copy 160Setting Copy Priority Stopping a Virtual Disk CopySelect Change→ Copy Priority 161Preparing Host Servers to Recopy a Virtual Disk Recopying a Virtual Disk162 Recopying the Virtual Disk 163Select Copy→ Re-Copy Removing Copy Pairs164 165 166 Configuration Device Mapper Multipath for Linux 167Prerequisite 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 Create a File System on a Device Mapper Partition Mount a Device Mapper PartitionReady for Use Important Information About Special PartitionsDevice Mapper Commands Descriptions 173Limitations and Known Issues 174175 TroubleshootingQuestionAnswer 176 Downloading RAID Controller and Nvsram Packages 177Downloading Both RAID Controller and Nvsram Firmware 178Click Transfer 179Downloading Only Nvsram Firmware 180Upgrade RAID Controller Module Firmware window appears Select Tools→ Upgrade RAID Controller Module Firmware181 182 Downloading Physical Disk Firmware 183184 AMW, select Advanced→ Maintenance→ Download→ EMM Firmware Downloading MD1200 Series Expansion Module EMM FirmwareDownload Environmental EMM Firmware dialog appears 185Self-Monitoring Analysis and Reporting Technology Smart 186Media Errors and Unreadable Sectors 187188 Recommended Tools Management Installing Array Components189 Installing the Front Bezel Front Bezel OptionalRemoving the Front Bezel 190Safety Models AMT, E03J, and E04J Hard DrivesRemoving a Drive Blank 191Removing a Hard Drive Installing a Drive Blank192 Removing and Installing a Hard Drive 193Installing a Hard Drive 194Removing a Hard Drive From a Hard-Drive Carrier 195196 Installing a Hard Drive Into a Drive Carrier RAID Controller ModuleRemoving a RAID Controller Module Blank 197Installing a RAID Controller Module Blank 198Removing a RAID Controller Module 199Opening the RAID Controller Module Installing a RAID Controller Module200 Closing the RAID Controller Module 201Removing the RAID Controller Module Backup Battery Unit RAID Controller Module Backup Battery Unit202 Installing the RAID Controller Module Backup Battery Unit 203Removing a Power Supply/Cooling Fan Module Power Supply/Cooling Fan Module204 Installing a Power Supply/Cooling Fan Module 205Removing the Control Panel Control Panel206 207 Installing the Control Panel 208Removing the Backplane Backplane209 210 16. Removing and Installing the Backplane-PowerVault MD3200 17. Removing and Installing the Backplane-PowerVault MD3220Installing the Backplane 212Viewing the Firmware Inventory Management Firmware Inventory213 214 Microsoft Services Virtual Disk ServiceVolume Shadow-Copy Service Management System Interfaces216 Troubleshooting Your Storage Array Software Start-Up RoutineDevice Health Conditions 217218 On the Setup tab, select Manage a Storage ArrayStatus Icon Description 219 Additional Status Icons DescriptionStorage Array Support Data 220Enter the Execution summary Automatically Collect the Support Bundle Data221 Event Log Collecting the Physical Disk Data222 Recovery Guru 223Select Storage Array→ View→ Profile Storage Array Profile224 225 Viewing the Physical Associations Viewing the Logical Associations226 Finding Nodes 227Using Go To Select Find all free capacity nodesClick Find Next 228Recovering From an Unresponsive Storage Array Condition 229230 231 Locating a Physical Disk 232Select Physical Disk→ Blink→ Expansion Enclosure Locating an Expansion Enclosure233 Capturing the State Information 234SMrepassist Utility 235Unidentified Devices Recovering From an Unidentified Storage Array236 237 238 Starting or Restarting the Host Context Agent Software 239240 Troubleshooting Your Array Troubleshooting Loss of CommunicationTroubleshooting External Connections 241Troubleshooting Power Supply/Cooling Fan Module 242Troubleshooting Expansion Enclosure Management Modules Troubleshooting Array Cooling Problems243 Troubleshooting RAID Controller Modules 244245 Troubleshooting Hard Drives 246Troubleshooting Array and Expansion Enclosure Connections 247Troubleshooting a Wet Storage Array 248Conditions Troubleshooting a Damaged Array249 ECC Errors PCI ErrorsInvalid Storage Array Critical ConditionsNoncritical Conditions 251252 Getting Help Contacting DellVisit support.dell.com Click All Support from Support menu254 Index 255256 257 258 259 260
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