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•Percent Full—When the snapshot repository virtual disk reaches the specified repository full percentage level, the event is logged in the Major Event Log (MEL). The default snapshot repository full percentage level is 50 percent of the source virtual disk.

•Snapshot Repository Virtual Disk Full Conditions—When the snapshot repository virtual disk becomes full, you are given a choice of failing write activity to the source virtual disk or failing the snapshot virtual disk.

Preparing Host Servers to Create the Snapshot Using the Simple Path

NOTE: Before using the Snapshot Virtual Disks Premium Feature in a Microsoft Windows clustered configuration, you must first map the snapshot virtual disk to the cluster node that owns the source virtual disk. This ensures that the cluster nodes correctly recognize the snapshot virtual disk.

NOTE: Mapping the snapshot virtual disk to the node that does not own the source virtual disk before the Snapshot enabling process is completed can result in the operating system mis-identifying the snapshot virtual disk. This, in turn, can result in data loss on the source virtual disk or an inaccessible snapshot.

NOTE: For details on mapping the snapshot virtual disk to the secondary node, refer to the Dell PowerVault MD3600i and MD3620i Storage Arrays With Microsoft Windows Server Failover Clusters on support.dell.com/manuals.

NOTE: You can create concurrent snapshots of a source virtual disk on both the source disk group and on another disk group.

Before creating a Snapshot Virtual Disk, note that:

•The following types of virtual disks are not valid source virtual disks:

•Snapshot repository virtual disks

•Snapshot virtual disks

•Target virtual disks that are participating in a virtual disk copy

NOTE: Virtual Disk Copy is an Advanced (Premium) feature.

•You cannot create a snapshot of a virtual disk that contains unreadable sectors.

•You must satisfy the requirements of your host operating system for creating snapshot virtual disks. Failure to meet the requirements of your host operating system results in an inaccurate snapshot of the source virtual disk or the target virtual disk in a virtual disk copy.

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Configuration: Premium Feature—Snapshot Virtual Disks

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Dell MD3620I, MD3600I owner manual 154

Contents

Dell PowerVault MD3600i and MD3620i Storage Arrays December Contents Cache Functions and Features Planning RAID Controller Modules Virtual Disk Operations Limit Configuring Alert Notifications Out-of-Band and In-Band Management Edit, Remove, or Rename Host Topology Enabling or Disabling the Event Monitor Managing Host Port Identifiers 104 103107 130 117126 Host-to-Virtual Disk Mapping 131 146 143145 147 Creating a Virtual Disk Copy for ContentsRe-Creating a Snapshot Virtual Disk Virtual Disk Copy Restrictions 179 Using DM Multipathing Devices 186Stopping a Virtual Disk Copy 178 Preparing Host Servers 179 210 Downloading Both RAID Controller209 211 227 RAID Controller Module Backup Battery Unit 222Power Supply/Cooling Fan Module 224 229 241 Recovering From an Unresponsive237 242 Troubleshooting Expansion Enclosure Management Modules 265 Safety First-For you and Your Array 263Troubleshooting Power 264 Troubleshooting a Damaged Array 270 272 Contents Introduction About This Document Dell PowerVault Modular Disk Configuration Utility Dell PowerVault Modular Disk Storage ManagerMD3600i Series Storage Array 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 Hard-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 MD3600i Series iSCSI RAID Controller Module Item Component Function Storage Array Thermal Shutdown RAID Controller Module-Additional FeaturesBattery Backup Unit Shutdown Threshold Type Cache Mirroring Cache Functions and FeaturesSystem Password Reset Write-Back Cache Write-Through Cache Planning MD3600i 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 Virtual Disk States RAID Controller Virtual Disk States Description RAID Levels RAID Level Usage RAID Virtual Disk Initialization Segment SizeVirtual Disk Operations Background Initialization Cycle Time Consistency CheckMedia Verification Foreground Initialization Virtual Disk Operations Limit Disk Group OperationsRAID Level Migration Virtual Disk Capacity Expansion Segment Size MigrationDisk Group Expansion Disk Group Defragmentation RAID Background Operations PriorityDisk Group Operations Limit Virtual Disk Migration and Disk Roaming Disk Migration Planning MD3600i Series Storage Array Terms and Concepts Disk Roaming Host Server-to-Virtual Disk Mapping Advanced Features Host Types Snapshot Virtual Disks Snapshot Repository Virtual Disk Source Virtual Disk Virtual Disk CopyTarget Virtual Disk Using Snapshot and Disk Copy Together Virtual Disk RecoveryMulti-Path Software Preferred and Alternate Controllers and Paths Virtual Disk Ownership 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 Configuration Overview User Interface Enterprise Management Window Inheriting the System Settings Array Management Window Configuration 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 Configuration About Your Storage Array Naming or Renaming Storage Arrays AMW Setup tab, select Rename Storage ArrayLocating Storage Arrays AMW, select Storage Array→ Blink→ Storage Array Setting a Password Name/Rename Storage Arrays dialog appears Type the New password PasswordPassword Guidelines Adding/Editing a Comment to an Existing Storage Array Viewing Storage Array ConnectionsSelect Edit→ Comment Removing Storage Arrays Enabling Premium FeaturesSelect Edit→ Remove→ Storage Array Changing the Cache Settings on the Storage Array Displaying Failover Alert Changing the Enclosure Order in the Physical Pane Changing Expansion Enclosure ID NumbersAMW, select Storage Array→ Change→ Enclosure Order Select Configure Alerts Configuring Alert NotificationsConfiguring E-mail Alerts Select All storage arrays Configuration About Your Storage Array Configuration About Your Storage Array Configuring Snmp Alerts Battery Settings Setting the Storage Array RAID Controller Module Clocks Select Manage iSCSI Settings Configuration Using iSCSIChanging the iSCSI Target Authentication Enter the Target Chap secret Click OK in the Manage iSCSI Settings window Entering Mutual Authentication PermissionsSelect the Mutual Authentication tab Creating Chap Secrets Valid Characters for Chap Secrets Initiator Chap SecretTarget Chap Secret Valid Ascii Characters for Chap Secrets Select the Target Identification tab Changing the iSCSI Target Discovery SettingsChanging the iSCSI Target Identification Select the Target Discovery tab Configuring the iSCSI Host Ports Configuration Using iSCSI Advanced iSCSI Host Ports Settings Advanced iSCSI Host Port Settings Description Viewing or Ending an iSCSI Session Viewing iSCSI Statistics and Setting Baseline Statistics Click Set Baseline Edit, Remove, or Rename Host Topology Mappings→ Move Configuration Event Monitor Windows Enabling or Disabling the Event MonitorLinux Configuration About Your Host Configuring Host Access Using the Mappings Tab Defining a Host Select Mappings→ Define→ Host Removing Host Access Select Mappings→ Remove Select Mappings→ Define→ Host Group Managing Host GroupsCreating a Host Group Adding a Host to a Host Group Select Mappings→ Move Moving a Host to a Different Host GroupRemoving a Host From a Host Group Move Host Confirmation dialog appears Host Topology Removing a Host Group101 Windows Starting or Stopping the Host Context AgentLinux Click Action→ Start Data Path Protection 103 Add Host Port Identifier dialog appears Managing Host Port Identifiers104 105 106 Creating Disk Groups and Virtual Disks Configuration Disk Groups and Virtual Disks107 Introduction Create Disk Group window is displayed Creating Disk Groups108 109 Locating a Disk Group Creating Virtual Disks 111 Changing the Virtual Disk Modification Priority 112 Changing the Virtual Disk Cache Settings 113 114 Select Virtual Disk→ Change→ Segment Size Changing the Segment Size of a Virtual Disk115 File system typical Database Multimedia Custom Changing the I/O Type116 Physical Disk Security with Self Encrypting Disk Choosing an Appropriate Physical Disk Type117 118 Save Security Key File Validate Security Key Unlock Drives 119 Creating a Security Key 120 121 Click Create Key Changing a Security Key122 Confirm Change Security Key window is displayed 123 Click Change Key Saving a Security Key124 Unlocking Secure Physical Disks Validate Security Key125 Erasing Secure Physical Disks Configuring Hot Spare Physical Disks126 Hot Spare Physical Disk Options window is displayed Select Physical disk→ Hot Spare Coverage127 Click Unassign Hot Spares and RebuildGlobal Hot Spares 128 Hot Spare Drive Protection Hot Spare Operation129 130 Enclosure Loss ProtectionCriteria for Enclosure Loss Protection RAID Level Host-to-Virtual Disk Mapping 131 Creating Host-to-Virtual Disk Mappings 132 Modifying and Removing Host-to-Virtual Disk Mapping 133 Changing Controller Ownership of the Virtual Disk 134 Select Virtual Disk→ Change→ Ownership/Preferred Path Removing Host-to-Virtual Disk Mapping135 Select Disk Group→ Change→ Ownership/Preferred Path 136 Select Disk Group→ Change→ RAID Level Restricted MappingsChanging the RAID Level of a Disk Group 137 138 139 140 Storage Partitioning Changing the RAID Level of a Disk Group141 142 Select Disk Group→ Add Free Capacity Physical Disks Disk Group and Virtual Disk Expansion143 Virtual Disk Expansion Using Free CapacityUsing Unconfigured Capacity 144 Exporting a Disk Group Disk Group MigrationExport Disk Group Non-Exportable Components Importing a Disk Group Import Disk Group146 Non-Importable Components Storage Array Media Scan147 Changing Media Scan Settings 148 Suspending the Media Scan 149 150 Configuration Premium Feature- Snapshot Virtual Disks 151 152 About the Simple Path Creating a Snapshot Virtual Disk Using the Simple Path153 154 155 About the Advanced Path Creating a Snapshot Virtual Disk Using the Advanced Path156 157 158 159 Automatic Map later with Storage Partition Creating the Snapshot Using the Advanced PathSpecify Virtual Disk Parameters window is displayed 160 Specifying Snapshot Virtual Disk Names 161 162 Snapshot Repository Capacity 163 Click Add Physical Disks 164 Add Physical Disks window closes 165 Select Virtual Disk→ Snapshot→ Re-create Re-Creating Snapshot Virtual DisksDisabling a Snapshot Virtual Disk 166 Preparing Host Servers to Re-Create a Snapshot Virtual Disk 167 Select Virtual Disk → Snapshot→ Re-create Re-Creating a Snapshot Virtual Disk168 Configuration Premium Feature- Virtual Disk Copy 169 Creating a Virtual Disk Copy for an Mscs Shared Disk 170 Virtual Disk Read/Write Permissions 171 Creating a Virtual Disk Copy Virtual Disk Copy Restrictions172 Virtual Disk Copy and Modification Operations Before you Begin173 Failed Virtual Disk Copy Preferred RAID Controller Module OwnershipCreate Copy Wizard 174 Copying the Virtual Disk Failed RAID Controller ModuleCopy Manager 175 176 Storage Array Performance During Virtual Disk Copy Setting Copy Priority177 Select Change→ Copy Priority Stopping a Virtual Disk Copy178 Preparing Host Servers to Recopy a Virtual Disk Recopying a Virtual Disk179 Recopying the Virtual Disk 180 Select Copy→ Re-Copy Removing Copy Pairs181 182 183 184 Configuration Device Mapper Multipath for Linux 185 Prerequisites Using DM Multipathing Devices186 Device Mapper Configuration Steps 187 Scan for Newly Added Virtual Disks 188 Create a New fdisk Partition on a Multipath Device Node 189 Dev/mapper/mpathx-party Add a New Partition to Device MapperDev/mapper/mpathxpy Dev/mapper/mpathxparty Mount a Device Mapper Partition Linux Host Server Reboot Best PracticesCreate a File System on a Device Mapper Partition Ready For Use Important Information About Special Partitions Useful Device Mapper Commands Description192 Limitations and Known Issues 193 194 TroubleshootingQuestion Answer 195 196 Downloading RAID Controller and Nvsram Packages 197 Downloading Both RAID Controller and Nvsram Firmware 198 Click Transfer 199 200 Downloading Only Nvsram Firmware 201 202 Downloading Physical Disk Firmware 203 204 Download Environmental EMM Firmware dialog appears AMW, select Advanced→ Maintenance→ Download→ EMM FirmwareDownloading MD1200 Series Expansion Module EMM Firmware 205 Self-Monitoring Analysis and Reporting Technology Smart 206 Media Errors and Unreadable Sectors 207 208 Recommended Tools Management Installing Array Components209 Removing the Front Bezel Installing the Front BezelFront Bezel Optional 210 Removing a Drive Blank Safety Models AMT, E03J, and E04JHard Drives 211 Removing a Hard Drive Installing a Drive Blank212 Removing and Installing a Hard Drive 213 Installing a Hard Drive 214 Removing a Hard Drive From a Hard-Drive Carrier 215 216 Removing a RAID Controller Module Blank Installing a Hard Drive Into a Drive CarrierRAID Controller Module 217 Installing a RAID Controller Module Blank 218 Removing a RAID Controller Module 219 Opening the RAID Controller Module Installing a RAID Controller Module220 Closing the RAID Controller Module 221 Removing the RAID Controller Module Backup Battery Unit RAID Controller Module Backup Battery Unit222 Installing the RAID Controller Module Backup Battery Unit 223 Removing a Power Supply/Cooling Fan Module Power Supply/Cooling Fan Module224 225 Installing a Power Supply/Cooling Fan Module 226 Removing the Control Panel Control Panel227 Installing the Control Panel 228 Removing the Backplane Backplane229 230 16. Removing and Installing the Backplane-PowerVault MD3600i 17. Removing and Installing the Backplane-PowerVault MD3620i Installing the Backplane 232 Viewing the Firmware Inventory Management Firmware Inventory233 234 Volume Shadow-Copy Service Microsoft ServicesVirtual Disk Service Management System Interfaces 236 Device Health Conditions Troubleshooting Your Storage Array SoftwareStart-Up Routine 237 238 On the Setup tab, select Manage a Storage ArrayStatus Icon Description 239 Additional Status Icons Description 240 Enter the Execution summary Storage Array Support DataAutomatically Collect the Support Bundle Data 241 Retrieving Trace Buffers 242 243 Collect Physical Disk Data window is displayed Collecting Physical Disk Data244 Event Log 245 Select Storage Array→ View→ Profile Recovery GuruStorage Array Profile 246 247 Viewing the Physical Associations Viewing the Logical Associations248 Finding Nodes 249 Click Find Next Using Go ToSelect Find all free capacity nodes 250 Recovering From an Unresponsive Storage Array Condition 251 252 253 Locating a Physical Disk 254 Select Physical Disk→ Blink→ Expansion Enclosure Locating an Expansion Enclosure255 Capturing the State Information 256 SMrepassist Utility 257 Unidentified Devices Recovering From an Unidentified Storage Array258 259 260 Starting or Restarting the Host Context Agent Software 261 262 Troubleshooting External Connections Troubleshooting Your ArrayTroubleshooting Loss of Communication 263 Troubleshooting Power Supply/Cooling Fan Module 264 Troubleshooting Expansion Enclosure Management Modules Troubleshooting Array Cooling Problems265 Troubleshooting RAID Controller Modules 266 267 Troubleshooting Hard Drives 268 Troubleshooting a Wet Storage Array Troubleshooting Array and Expansion Enclosure Connections269 Troubleshooting a Damaged Array 270 Invalid Storage Array ECC ErrorsConditions 271 Noncritical Conditions PCI ErrorsCritical Conditions 272 Visit support.dell.com Getting HelpContacting Dell Click All Support from Support menu 274 Index 275 276 277 278 Smart 279 280 281 282