167 | Dell MD3600I, MD3620I specification

NOTE: If you do not intend to re-create the snapshot virtual disk at a later time, in the Logical pane, select the snapshot virtual disk, and select Virtual Disk→ Delete to remove it. The associated snapshot repository virtual disk is also removed. Refer to the PowerVault Modular Disk Storage Manager online help topics for more information on removing a snapshot virtual disk.

NOTE: The SMdevices utility displays the snapshot virtual disk in its output, even after the snapshot virtual disk is disabled.

To disable a snapshot virtual disk:

1In the AMW, select the Logical tab, select the snapshot virtual disk, and select Virtual Disk→ Snapshot→ Disable.

2In the text box, type yes and click OK.

The snapshot virtual disk is disabled. The associated snapshot repository virtual disk does not change status. The copy-on-write activity to the snapshot repository virtual disk stops until the snapshot virtual disk is re- created.

Preparing Host Servers to Re-Create a Snapshot Virtual Disk

NOTE: Before you create a new snapshot of a source virtual disk, stop any data access (I/O) activity or suspend data transfer to the source virtual disk and snapshot virtual disk to ensure that you capture an accurate snapshot 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 in Windows or unmounting the virtual drive in Linux helps to guarantee a stable copy of the drive for the Snapshot.

Before re-creating a snapshot virtual disk, both the host server and the associated virtual disk you are re-creating have to be in the proper state.

To prepare your host server and virtual disk:

1Stop all I/O activity to the source and snapshot virtual disk (if mounted).

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

SMrepassist -f <filename-identifier>

and press <Enter>. For more information, see "SMrepassist Utility" on page 257.

Configuration: Premium Feature—Snapshot Virtual Disks

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Contents

Dell PowerVault MD3600i and MD3620i Storage Arrays December Contents Planning RAID Controller Modules Cache Functions and Features Virtual Disk Operations Limit Out-of-Band and In-Band Management Configuring Alert Notifications Enabling or Disabling the Event Monitor Edit, Remove, or Rename Host Topology 107 103Managing Host Port Identifiers 104 Host-to-Virtual Disk Mapping 131 117126 130 147 143145 146 Virtual Disk Copy Restrictions ContentsRe-Creating a Snapshot Virtual Disk Creating a Virtual Disk Copy for Preparing Host Servers 179 Using DM Multipathing Devices 186Stopping a Virtual Disk Copy 178 179 211 Downloading Both RAID Controller209 210 229 RAID Controller Module Backup Battery Unit 222Power Supply/Cooling Fan Module 224 227 242 Recovering From an Unresponsive237 241 Troubleshooting a Damaged Array 270 Safety First-For you and Your Array 263Troubleshooting Power 264 Troubleshooting Expansion Enclosure Management Modules 265 272 Contents About This Document Introduction MD3600i Series Storage Array Dell PowerVault Modular Disk Storage ManagerDell PowerVault Modular Disk Configuration Utility Other Information You May Need Introduction Overview Planning About Your Storage Array Front-Panel Features and Indicators Hardware Features Planning About Your Storage Array Item Indicator, Button, or Icon Description Connector Back-Panel Features and Indicators Hard Drive Indicators Hard-Drive Indicator Patterns Hard-Drive Status Indicator Pattern Condition Power Supply and Cooling Fan Features Power Indicator Codes Item LED Type Icon Description Power Indicator Codes RAID Controller Modules Planning RAID Controller Modules MD3600i Series iSCSI RAID Controller Module RAID Controller Module Connectors and Features Item Component Function Shutdown Threshold Type RAID Controller Module-Additional FeaturesBattery Backup Unit Storage Array Thermal Shutdown Write-Back Cache Cache Functions and FeaturesSystem Password Reset Cache Mirroring Write-Through Cache Physical Disks, Virtual Disks, and Disk Groups Planning MD3600i Series Storage Array Terms and Concepts Physical Disk States Physical Disks Virtual Disks and Disk Groups Self-Monitoring Analysis and Reporting Technology RAID Controller Virtual Disk States Description Virtual Disk States RAID Level Usage RAID Levels RAID Background Initialization Segment SizeVirtual Disk Operations Virtual Disk Initialization Foreground Initialization Consistency CheckMedia Verification Cycle Time RAID Level Migration Disk Group OperationsVirtual Disk Operations Limit Disk Group Expansion Segment Size MigrationVirtual Disk Capacity Expansion Disk Group Operations Limit RAID Background Operations PriorityDisk Group Defragmentation Disk Migration Virtual Disk Migration and Disk Roaming Planning MD3600i Series Storage Array Terms and Concepts Host Server-to-Virtual Disk Mapping Disk Roaming Host Types Advanced Features Snapshot Repository Virtual Disk Snapshot Virtual Disks Target Virtual Disk Virtual Disk CopySource Virtual Disk Multi-Path Software Virtual Disk RecoveryUsing Snapshot and Disk Copy Together Virtual Disk Ownership Preferred and Alternate Controllers and Paths Load Balancing Monitoring MD3600i Series System Performance Planning MD3600i Series Storage Array Terms and Concepts Performance Monitor Table Description Column Headings Planning MD3600i Series Storage Array Terms and Concepts User Interface Configuration Overview Enterprise Management Window Array Management Window Inheriting the System Settings 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 Configuration About Your Storage Array AMW, select Storage Array→ Blink→ Storage Array AMW Setup tab, select Rename Storage ArrayLocating Storage Arrays Naming or Renaming Storage Arrays Name/Rename Storage Arrays dialog appears Setting a Password Password Guidelines PasswordType the New password Select Edit→ Comment Viewing Storage Array ConnectionsAdding/Editing a Comment to an Existing Storage Array Select Edit→ Remove→ Storage Array Enabling Premium FeaturesRemoving Storage Arrays Displaying Failover Alert Changing the Cache Settings on the Storage Array AMW, select Storage Array→ Change→ Enclosure Order Changing Expansion Enclosure ID NumbersChanging the Enclosure Order in the Physical Pane Select All storage arrays Configuring Alert NotificationsConfiguring E-mail Alerts Select Configure Alerts Configuration About Your Storage Array Configuration About Your Storage Array Configuring Snmp Alerts Battery Settings Setting the Storage Array RAID Controller Module Clocks Enter the Target Chap secret Configuration Using iSCSIChanging the iSCSI Target Authentication Select Manage iSCSI Settings Creating Chap Secrets Entering Mutual Authentication PermissionsSelect the Mutual Authentication tab Click OK in the Manage iSCSI Settings window Valid Ascii Characters for Chap Secrets Initiator Chap SecretTarget Chap Secret Valid Characters for Chap Secrets Select the Target Discovery tab Changing the iSCSI Target Discovery SettingsChanging the iSCSI Target Identification Select the Target Identification tab Configuring the iSCSI Host Ports Configuration Using iSCSI Advanced iSCSI Host Port Settings Description Advanced iSCSI Host Ports Settings Viewing or Ending an iSCSI Session Click Set Baseline Viewing iSCSI Statistics and Setting Baseline Statistics Mappings→ Move Edit, Remove, or Rename Host Topology Configuration Event Monitor Linux Enabling or Disabling the Event MonitorWindows Configuring Host Access Configuration About Your Host Using the Mappings Tab Select Mappings→ Define→ Host Defining a Host Select Mappings→ Remove Removing Host Access Adding a Host to a Host Group Managing Host GroupsCreating a Host Group Select Mappings→ Define→ Host Group Move Host Confirmation dialog appears Moving a Host to a Different Host GroupRemoving a Host From a Host Group Select Mappings→ Move 101 Removing a Host GroupHost Topology Click Action→ Start Starting or Stopping the Host Context AgentLinux Windows 103 Data Path Protection 104 Managing Host Port IdentifiersAdd Host Port Identifier dialog appears 105 106 107 Configuration Disk Groups and Virtual DisksCreating Disk Groups and Virtual Disks 108 Creating Disk GroupsIntroduction Create Disk Group window is displayed 109 Creating Virtual Disks Locating a Disk Group 111 112 Changing the Virtual Disk Modification Priority 113 Changing the Virtual Disk Cache Settings 114 115 Changing the Segment Size of a Virtual DiskSelect Virtual Disk→ Change→ Segment Size 116 Changing the I/O TypeFile system typical Database Multimedia Custom 117 Choosing an Appropriate Physical Disk TypePhysical Disk Security with Self Encrypting Disk 118 119 Save Security Key File Validate Security Key Unlock Drives 120 Creating a Security Key 121 122 Changing a Security KeyClick Create Key 123 Confirm Change Security Key window is displayed 124 Saving a Security KeyClick Change Key 125 Validate Security KeyUnlocking Secure Physical Disks 126 Configuring Hot Spare Physical DisksErasing Secure Physical Disks 127 Select Physical disk→ Hot Spare CoverageHot Spare Physical Disk Options window is displayed 128 Hot Spares and RebuildGlobal Hot Spares Click Unassign 129 Hot Spare OperationHot Spare Drive Protection Criteria for Enclosure Loss Protection RAID Level Enclosure Loss Protection130 131 Host-to-Virtual Disk Mapping 132 Creating Host-to-Virtual Disk Mappings 133 Modifying and Removing Host-to-Virtual Disk Mapping 134 Changing Controller Ownership of the Virtual Disk 135 Removing Host-to-Virtual Disk MappingSelect Virtual Disk→ Change→ Ownership/Preferred Path 136 Select Disk Group→ Change→ Ownership/Preferred Path 137 Restricted MappingsChanging the RAID Level of a Disk Group Select Disk Group→ Change→ RAID Level 138 139 140 141 Changing the RAID Level of a Disk GroupStorage Partitioning 142 143 Disk Group and Virtual Disk ExpansionSelect Disk Group→ Add Free Capacity Physical Disks 144 Using Free CapacityUsing Unconfigured Capacity Virtual Disk Expansion Non-Exportable Components Disk Group MigrationExport Disk Group Exporting a Disk Group 146 Import Disk GroupImporting a Disk Group 147 Storage Array Media ScanNon-Importable Components 148 Changing Media Scan Settings 149 Suspending the Media Scan 150 151 Configuration Premium Feature- Snapshot Virtual Disks 152 153 Creating a Snapshot Virtual Disk Using the Simple PathAbout the Simple Path 154 155 156 Creating a Snapshot Virtual Disk Using the Advanced PathAbout the Advanced Path 157 158 159 160 Creating the Snapshot Using the Advanced PathSpecify Virtual Disk Parameters window is displayed Automatic Map later with Storage Partition 161 Specifying Snapshot Virtual Disk Names 162 163 Snapshot Repository Capacity 164 Click Add Physical Disks 165 Add Physical Disks window closes 166 Re-Creating Snapshot Virtual DisksDisabling a Snapshot Virtual Disk Select Virtual Disk→ Snapshot→ Re-create 167 Preparing Host Servers to Re-Create a Snapshot Virtual Disk 168 Re-Creating a Snapshot Virtual DiskSelect Virtual Disk → Snapshot→ Re-create 169 Configuration Premium Feature- Virtual Disk Copy 170 Creating a Virtual Disk Copy for an Mscs Shared Disk 171 Virtual Disk Read/Write Permissions 172 Virtual Disk Copy RestrictionsCreating a Virtual Disk Copy 173 Before you BeginVirtual Disk Copy and Modification Operations 174 Preferred RAID Controller Module OwnershipCreate Copy Wizard Failed Virtual Disk Copy 175 Failed RAID Controller ModuleCopy Manager Copying the Virtual Disk 176 177 Setting Copy PriorityStorage Array Performance During Virtual Disk Copy 178 Stopping a Virtual Disk CopySelect Change→ Copy Priority 179 Recopying a Virtual DiskPreparing Host Servers to Recopy a Virtual Disk 180 Recopying the Virtual Disk 181 Removing Copy PairsSelect Copy→ Re-Copy 182 183 184 185 Configuration Device Mapper Multipath for Linux 186 Using DM Multipathing DevicesPrerequisites 187 Device Mapper Configuration Steps 188 Scan for Newly Added Virtual Disks 189 Create a New fdisk Partition on a Multipath Device Node Dev/mapper/mpathxparty Add a New Partition to Device MapperDev/mapper/mpathxpy Dev/mapper/mpathx-party Ready For Use Linux Host Server Reboot Best PracticesCreate a File System on a Device Mapper Partition Mount a Device Mapper Partition 192 Useful Device Mapper Commands DescriptionImportant Information About Special Partitions 193 Limitations and Known Issues Question Answer Troubleshooting194 195 196 197 Downloading RAID Controller and Nvsram Packages 198 Downloading Both RAID Controller and Nvsram Firmware 199 Click Transfer 200 201 Downloading Only Nvsram Firmware 202 203 Downloading Physical Disk Firmware 204 205 AMW, select Advanced→ Maintenance→ Download→ EMM FirmwareDownloading MD1200 Series Expansion Module EMM Firmware Download Environmental EMM Firmware dialog appears 206 Self-Monitoring Analysis and Reporting Technology Smart 207 Media Errors and Unreadable Sectors 208 209 Management Installing Array ComponentsRecommended Tools 210 Installing the Front BezelFront Bezel Optional Removing the Front Bezel 211 Safety Models AMT, E03J, and E04JHard Drives Removing a Drive Blank 212 Installing a Drive BlankRemoving a Hard Drive 213 Removing and Installing a Hard Drive 214 Installing a Hard Drive 215 Removing a Hard Drive From a Hard-Drive Carrier 216 217 Installing a Hard Drive Into a Drive CarrierRAID Controller Module Removing a RAID Controller Module Blank 218 Installing a RAID Controller Module Blank 219 Removing a RAID Controller Module 220 Installing a RAID Controller ModuleOpening the RAID Controller Module 221 Closing the RAID Controller Module 222 RAID Controller Module Backup Battery UnitRemoving the RAID Controller Module Backup Battery Unit 223 Installing the RAID Controller Module Backup Battery Unit 224 Power Supply/Cooling Fan ModuleRemoving a Power Supply/Cooling Fan Module 225 226 Installing a Power Supply/Cooling Fan Module 227 Control PanelRemoving the Control Panel 228 Installing the Control Panel 229 BackplaneRemoving the Backplane 230 17. Removing and Installing the Backplane-PowerVault MD3620i 16. Removing and Installing the Backplane-PowerVault MD3600i 232 Installing the Backplane 233 Management Firmware InventoryViewing the Firmware Inventory 234 Management System Interfaces Microsoft ServicesVirtual Disk Service Volume Shadow-Copy Service 236 237 Troubleshooting Your Storage Array SoftwareStart-Up Routine Device Health Conditions Status Icon Description On the Setup tab, select Manage a Storage Array238 Additional Status Icons Description 239 240 241 Storage Array Support DataAutomatically Collect the Support Bundle Data Enter the Execution summary 242 Retrieving Trace Buffers 243 244 Collecting Physical Disk DataCollect Physical Disk Data window is displayed 245 Event Log 246 Recovery GuruStorage Array Profile Select Storage Array→ View→ Profile 247 248 Viewing the Logical AssociationsViewing the Physical Associations 249 Finding Nodes 250 Using Go ToSelect Find all free capacity nodes Click Find Next 251 Recovering From an Unresponsive Storage Array Condition 252 253 254 Locating a Physical Disk 255 Locating an Expansion EnclosureSelect Physical Disk→ Blink→ Expansion Enclosure 256 Capturing the State Information 257 SMrepassist Utility 258 Recovering From an Unidentified Storage ArrayUnidentified Devices 259 260 261 Starting or Restarting the Host Context Agent Software 262 263 Troubleshooting Your ArrayTroubleshooting Loss of Communication Troubleshooting External Connections 264 Troubleshooting Power Supply/Cooling Fan Module 265 Troubleshooting Array Cooling ProblemsTroubleshooting Expansion Enclosure Management Modules 266 Troubleshooting RAID Controller Modules 267 268 Troubleshooting Hard Drives 269 Troubleshooting Array and Expansion Enclosure ConnectionsTroubleshooting a Wet Storage Array 270 Troubleshooting a Damaged Array 271 ECC ErrorsConditions Invalid Storage Array 272 PCI ErrorsCritical Conditions Noncritical Conditions Click All Support from Support menu Getting HelpContacting Dell Visit support.dell.com 274 275 Index 276 277 278 279 Smart 280 281 282