Dell MD3220i Recopying a Virtual Disk, Preparing Host Servers to Recopy a Virtual Disk, 172

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Recopying a Virtual Disk

You can recopy a virtual disk when you have stopped a virtual disk copy and you want to start it again or when a virtual disk copy has failed.

The Recopy option overwrites existing data on the target virtual disk and makes the target virtual disk read-only to hosts. This option fails all snapshot virtual disks associated with the target virtual disk, if any exist.

Preparing Host Servers to Recopy a Virtual Disk

NOTE: Before you create a new copy of a source virtual disk, stop any data access (I/O) activity or suspend data transfer to the source virtual disk (and, if applicable, the target disk) to ensure that you capture an accurate point-in-time image of the source virtual disk. Close all applications, including Windows Internet Explorer, to make sure all I/O activity has stopped.

NOTE: Removing the drive letter of the associated virtual disk(s) in Windows or unmounting the virtual drive in Linux helps to guarantee a stable copy of the drive for the virtual disk copy.

Before creating a new virtual disk copy for an existing copy pair, both the host server and the associated virtual disk you are recopying have to be in the proper state. Perform the following steps to prepare your host server and virtual disk:

1Stop all I/O activity to the source and target virtual disk.

2Using your Windows system, flush the cache to both the source and the target virtual disk (if mounted). At the host prompt, type

SMrepassist -f <filename-identifier>

and press <Enter>. For more information, see "SMrepassist Utility" on page 243.

3Click the Summary tab, then click Disk Groups & Virtual Disks to ensure that the virtual disk is in Optimal or Disabled status.

4Remove the drive letter(s) of the source and (if mounted) virtual disk in Windows or unmount the virtual drive(s) in Linux to help guarantee a stable copy of the drive for the virtual disk. If this is not done, the copy operation reports that it has completed successfully, but the copied data is not updated properly.

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Configuration: Premium Feature—Virtual Disk Copy

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Contents Dell PowerVault MD3200i and MD3220i Storage Arrays May Contents Cache Functions and Features Planning RAID Controller ModulesVirtual Disk Operations Limit Configuring Alert Notifications Out-of-Band and In-Band ManagementEdit, Remove, or Rename Host Topology Setting the Storage Array RAIDEnabling or Disabling the Event Monitor 103 Managing Host Port Identifiers113 Configuring Hot Spare Physical Disks 121 124Host-to-Virtual Disk Mapping 126 132139 140141 146Contents Disabling a Snapshot Virtual DiskRe-creating a Snapshot Virtual Disk Creating a Virtual Disk Copy forUsing DM Multipathing Devices 178 Limitations and Known Issues 184174 177Downloading MD1200 Series Expansion 197198 199Power Supply/Cooling Fan Module 211 215217 Viewing the Firmware Inventory 221Recovering From an Unresponsive 229Collecting the Physical Disk Data 230 231250 258Getting Help Contacting Dell Index Contents Introduction About This DocumentDell PowerVault MD3200i Series Storage Array Dell PowerVault Modular Disk Storage ManagerDell PowerVault Modular Disk Configuration Utility Other Information You May NeedIntroduction 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 MD3200i Series iSCSI RAID Controller ModuleComponent Function LEDRAID Controller Module-Additional Features Battery Backup UnitStorage Array Thermal Shutdown Item Component FunctionCache Functions and Features System Password ResetCache Mirroring Write-Back CacheWrite-Through Cache Physical Disks, Virtual Disks, and Disk Groups Physical DisksPhysical Disk States Self-Monitoring Analysis and Reporting Technology Virtual Disks and Disk GroupsVirtual Disk States RAID LevelsRAID Controller Virtual Disk States Description RAID Level Usage RAIDSegment Size Virtual Disk Operations Virtual Disk InitializationBackground Initialization Foreground InitializationCycle Time Media VerificationVirtual Disk Operations Limit RAID Level Migration Disk Group OperationsSegment Size Migration Virtual Disk Capacity Expansion Disk Group ExpansionDisk Group Defragmentation Disk Group Operations LimitRAID Background Operations Priority Virtual Disk Migration and Disk Roaming Disk MigrationPlanning MD3200i Series Storage Array Terms and Concepts Disk Roaming Advanced FeaturesHost Server-to-Virtual Disk Mapping Host Types Snapshot Virtual DisksSnapshot Repository Virtual Disk Virtual Disk CopyVirtual Disk Recovery Using Snapshot and Disk Copy TogetherSource Virtual Disk Target Virtual DiskMulti-Path Software Preferred and Alternate Controllers and PathsLoad Balancing Virtual Disk OwnershipMonitoring MD3200i Series System Performance Planning MD3200i Series Storage Array Terms and Concepts Performance Monitor Table Description Column Headings 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 Naming 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 ArrayChanging the Cache Settings on the Storage Array Enabling Premium FeaturesFailover Alert Display Changing the Enclosure Order in the Physical Pane Changing Expansion Enclosure ID NumbersAMW, select Storage Array→ Change→ Enclosure Order Configuring Alert Notifications Configuring E-mail AlertsSelect Configure Alerts Select All storage arraysConfiguration About Your Storage Array Configuration About Your Storage Array Configuring Snmp Alerts Battery Settings Setting the Storage Array RAID Controller Module Clocks Configuration About Your Storage Array Configuration Using iSCSI Changing the iSCSI Target AuthenticationSelect Manage iSCSI Settings Enter the Target Chap secretEntering Mutual Authentication Permissions Select the Mutual Authentication tabClick OK in the Manage iSCSI Settings window Creating Chap SecretsInitiator Chap Secret Target Chap SecretValid Characters for Chap Secrets Valid Ascii Characters for Chap SecretsChanging the iSCSI Target Discovery Settings Changing the iSCSI Target IdentificationSelect the Target Identification tab Select the Target Discovery tabConfiguring the iSCSI Host Ports Configuration Using iSCSI Advanced iSCSI Host Ports Settings Advanced iSCSI Host Port Settings DescriptionViewing or Ending an iSCSI Session Viewing iSCSI Statistics and Setting Baseline Statistics Click Set BaselineEdit, Remove, or Rename Host Topology Mappings→ MoveConfiguration Event Monitor Enabling or Disabling the Event MonitorWindows LinuxConfiguration 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 Click Action→ Start Data Path Protection100 Add Host Port Identifier dialog appears Managing Host Port Identifiers101 102 Creating Disk Groups and Virtual Disks Configuration Disk Groups and Virtual Disks103 Introduction Create Disk Group window is displayed Creating Disk Groups104 105 Locating a Disk Group Creating Virtual Disks107 Customize settings Map later Using Mappings ViewChanging the Virtual Disk Modification Priority 108Toolbar, select Virtual Disk→ Change→ Cache Settings Changing the Virtual Disk Cache Settings109 110 Select Virtual Disk→ Change→ Segment Size Changing the Segment Size of a Virtual Disk111 File system typical Database Multimedia Custom Changing the I/O Type112 Physical Disk Security with Self Encrypting Disk Choosing an Appropriate Physical Disk Type113 114 115 Creating a Security Key 116Click Create Key Changing a Security Key117 Click Change Key Confirm Change Security Key window is displayed118 Saving a Security Key 119Erasing Secure Physical Disks Unlocking Secure Physical Disks120 Select Physical disk→ Hot Spare Coverage Configuring Hot Spare Physical Disks121 Click Unassign Hot Spare Physical Disk Options window is displayed122 Hot Spares and Rebuild Global Hot SparesHot Spare Operation Hot Spare Drive ProtectionEnclosure Loss Protection 124125 Criteria for Enclosure Loss Protection RAID LevelCreating Host-to-Virtual Disk Mappings Host-to-Virtual Disk Mapping126 127 Modifying and Removing Host-to-Virtual Disk Mapping 128Changing Controller Ownership of the Virtual Disk Removing Host-to-Virtual Disk MappingSelect Virtual Disk→ Change→ Ownership/Preferred Path 129Select Disk Group→ Change→ Ownership/Preferred Path 130Select Disk Group→ Change→ RAID Level Changing the RAID Level of a Disk Group131 132 Restricted MappingsOperating System Highest LUN 133 134 Changing the RAID Level of a Disk Group 135Storage Partitioning 136Select Disk Group→ Add Free Capacity Physical Disks Disk Group and Virtual Disk Expansion137 Using Free Capacity Using Unconfigured CapacityVirtual Disk Expansion 138Disk Group Migration Export Disk GroupExporting a Disk Group Non-Exportable ComponentsImporting a Disk Group Import Disk Group140 Non-Importable Components Storage Array Media Scan141 Changing Media Scan Settings 142Suspending the Media Scan 143144 Configuration Premium Feature- Snapshot Virtual Disks 145About the Simple Path Creating a Snapshot Virtual Disk Using the Simple Path146 147 148 About the Advanced Path Creating a Snapshot Virtual Disk Using the Advanced Path149 150 151 152 Specify Virtual Disk Parameters window is displayed Creating the Snapshot Using the Advanced Path153 Specifying Snapshot Virtual Disk Names 154155 Snapshot Repository Capacity 156Click Add Physical Disks 157Add Physical Disks window closes 158Re-creating Snapshot Virtual Disks Disabling a Snapshot Virtual DiskSelect Virtual Disk→ Snapshot→ Re-create 159Preparing Host Servers to Re-create a Snapshot Virtual Disk 160Select Virtual Disk → Snapshot→ Re-create Re-creating a Snapshot Virtual Disk161 162 Configuration Premium Feature- Virtual Disk Copy 163Creating a Virtual Disk Copy for an Mscs Shared Disk 164Virtual Disk Copy Restrictions Virtual Disk Read/Write Permissions165 Creating a Virtual Disk Copy 166Before you Begin Virtual Disk Copy and Modification OperationsCreate Copy Wizard 167Preferred RAID Controller Module Ownership Failed RAID Controller ModuleFailed Virtual Disk Copy 168Copying the Virtual Disk Copy Manager169 Storage Array Performance During Virtual Disk Copy Setting Copy Priority170 Select Change→ Copy Priority Stopping a Virtual Disk Copy171 Preparing Host Servers to Recopy a Virtual Disk Recopying a Virtual Disk172 Select Copy→ Re-Copy Recopying the Virtual Disk173 Removing Copy Pairs 174175 176 Configuration Device Mapper Multipath for Linux 177Prerequisite Steps Using DM Multipathing Devices178 Scan for newly added Virtual Disks Device Mapper Configuration Steps179 180 Add a new Partition to Device Mapper Create a New fdisk Partition on a Multipath Device Node181 Create a file system on a Device Mapper Partition Mount a Device Mapper PartitionReady For Use 182Important Information About Special Partitions Linux Host Server Reboot Best Practices183 Useful Device Mapper Commands Descriptions Limitations and Known Issues184 185 TroubleshootingQuestion Answer 186 QuestionAnswerDownloading RAID Controller and Nvsram Packages 187Downloading Both RAID Controller and Nvsram Firmware 188Click Transfer 189Downloading Only Nvsram Firmware 190Upgrade RAID Controller Module Firmware window appears Select Tools→ Upgrade RAID Controller Module Firmware191 Downloading Physical Disk Firmware 192193 Downloading MD1200 Series Expansion Module EMM Firmware 194Download Environmental EMM Firmware dialog appears AMW, select Advanced→ Maintenance→ Download→ EMM Firmware195 Self-Monitoring Analysis and Reporting Technology Smart Media Errors and Unreadable Sectors196 Recommended Tools Management Installing Array Components197 Installing the Front Bezel Front Bezel OptionalRemoving the Front Bezel 198Safety Models AMT, E03J, and E04J Hard DrivesRemoving a Drive Blank 199Removing a Hard Drive Installing a Drive Blank200 Removing and Installing a Hard Drive 201Removing a Hard Drive From a Hard-Drive Carrier Installing a Hard Drive202 203 204 Installing a Hard Drive Into a Drive Carrier RAID Controller ModuleRemoving a RAID Controller Module Blank 205Installing a RAID Controller Module Blank 206Removing a RAID Controller Module 207Opening the RAID Controller Module Installing a RAID Controller Module208 Closing the RAID Controller Module 209Removing the RAID Controller Module Backup Battery Unit RAID Controller Module Backup Battery Unit210 Power Supply/Cooling Fan Module Installing the RAID Controller Module Backup Battery UnitRemoving a Power Supply/Cooling Fan Module 211212 213 Installing a Power Supply/Cooling Fan Module 214Removing the Control Panel Control Panel215 Installing the Control Panel 216Removing the Backplane Backplane217 218 16. Removing and Installing the Backplane-PowerVault MD3200i 17. Removing and Installing the Backplane-PowerVault MD3220iInstalling the Backplane 220Viewing the Firmware Inventory Management Firmware Inventory221 222 Microsoft Services Virtual Disk ServiceVolume Shadow-Copy Service Management System Interfaces224 Troubleshooting Your Storage Array Software Start-Up RoutineDevice Health Conditions 225226 On the Setup tab, select Manage a Storage ArrayStatus Icon Description 227 228 Additional Status Icons DescriptionStorage Array Support Data Automatically Collect the Support Bundle DataEnter the Execution summary 229Collecting the Physical Disk Data 230Event Log 231Recovery Guru Storage Array ProfileSelect Storage Array→ View→ Profile 232233 Viewing the Physical Associations Viewing the Logical Associations234 Finding Nodes 235Using Go To Select Find all free capacity nodesClick Find Next 236Recovering From an Unresponsive Storage Array Condition 237238 239 Locating a Physical Disk 240Select Physical Disk→ Blink→ Expansion Enclosure Locating an Expansion Enclosure241 Capturing the State Information 242SMrepassist Utility 243Unidentified Devices Recovering From an Unidentified Storage Array244 245 Starting or Restarting the Host Context Agent Software 246247 248 Troubleshooting Your Array Troubleshooting Loss of CommunicationTroubleshooting External Connections 249Troubleshooting Power Supply/Cooling Fan Module 250Troubleshooting Expansion Enclosure Management Modules Troubleshooting Array Cooling Problems251 252 Troubleshooting RAID Controller Modules 253Troubleshooting Hard Drives 254Troubleshooting a Wet Storage Array Troubleshooting Array and Expansion Enclosure Connections255 Troubleshooting a Damaged Array 256ECC Errors ConditionsInvalid Storage Array 257PCI Errors Critical ConditionsNoncritical Conditions 258Getting Help Contacting DellVisit support.dell.com Click All Support from Support menu260 Index 261262 263 264 265 266 267 268
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MD3200i, MD3220i specifications

The Dell MD3220i and MD3200i are part of Dell's extensive line of modular storage solutions, designed to support organizations in optimizing their data management and scalability requirements. These models offer reliable performance and flexible features, making them suitable for various workloads including virtualization, cloud storage, and disaster recovery.

One of the standout features of the MD3220i and MD3200i is their support for iSCSI storage networking. By utilizing the Internet Small Computer Systems Interface (iSCSI) protocol, these systems provide organizations with a cost-effective way to connect their storage over existing network infrastructure, enabling efficient data transfers and management.

Both models are equipped with dual controllers that ensure high availability and failover capabilities, which are crucial for meeting uptime requirements in mission-critical environments. The dual controllers also facilitate load balancing and increase overall system performance, as they allow multiple paths to the storage, enhancing I/O performance.

Scalability is another key characteristic of the MD3220i and MD3200i. These storage arrays can be expanded to meet growing storage demands, supporting up to 240TB of raw capacity with up to 16 additional expansion enclosures. This flexibility allows organizations to start with a smaller configuration and grow their storage capabilities without a complete overhaul of the existing infrastructure.

The units also support multiple disk types, including traditional spinning disks, solid-state drives (SSDs), and a combination of both. This versatility enables users to tailor storage configurations to their specific performance and budgetary needs. Furthermore, the systems feature advanced data management technologies such as snapshots and remote replication, providing essential tools for data protection.

With their ease of management, the MD3220i and MD3200i are designed for straightforward configuration and operation. The intuitive management interfaces allow IT professionals to monitor performance, configure storage, and manage data effectively, ensuring businesses can maintain optimal system availability.

In summary, the Dell MD3220i and MD3200i are robust, scalable, and versatile storage solutions that cater to diverse organizational needs. Their integrated technologies, such as iSCSI support, dual controller architecture, and advanced data management features, make them an ideal choice for modern data centers looking to enhance storage capabilities while ensuring reliability and performance.
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