Changing the RAID Level of a Disk Group, 141 | Dell MD3600I instruction

Changing the RAID Level of a Disk Group

Use the Change→ RAID Level option to change the RAID level on a selected disk group. Using this option changes the RAID levels of every virtual disk that comprises the disk group. Performance might be slightly affected during the operation. Keep these guidelines in mind when you change the RAID level of a disk group:

•You cannot cancel this operation after it begins.

•The disk group must be in Optimal status before you can perform this operation. Your data remains available during this operation.

•If you do not have enough capacity in the disk group to convert to the new RAID level, an error message appears, and the operation does not continue. If you have unassigned physical disks, use the Disk Group→ Add Free Capacity (Physical Disks) option to add additional capacity to the disk group. Then retry the operation.

To change the RAID level of a disk group:

1Select the Logical tab.

2Select the disk group.

3Select Disk Group→ Change→ RAID Level.

4Select the RAID level (RAID Level 0, RAID Level 1, RAID Level 5, or RAID Level 6). The currently selected option is designated with a dot.

5Click Yes.

The RAID level operation begins.

Storage Partitioning

A storage partition is a logical entity consisting of one or more virtual disks that can be accessed by a single host or shared among hosts that are part of a host group. The first time you map a virtual disk to a specific host or host group, a storage partition is created. Subsequent virtual disk mappings to that host or host group do not create another storage partition.

One storage partition is sufficient if:

•Only one attached host accesses all of the virtual disks in the storage array.

•All attached hosts share access to all of the virtual disks in the storage array.

Configuration: Disk Groups and Virtual Disks

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Dell MD3600I, MD3620I owner manual Changing the RAID Level of a Disk Group, Storage Partitioning, 141

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 103 Managing Host Port Identifiers 104107 126 117130 Host-to-Virtual Disk Mapping 131 145 143146 147 Re-Creating a Snapshot Virtual Disk ContentsCreating a Virtual Disk Copy for Virtual Disk Copy Restrictions Stopping a Virtual Disk Copy 178 Using DM Multipathing Devices 186179 Preparing Host Servers 179 209 Downloading Both RAID Controller210 211 Power Supply/Cooling Fan Module 224 RAID Controller Module Backup Battery Unit 222227 229 237 Recovering From an Unresponsive241 242 Troubleshooting Power 264 Safety First-For you and Your Array 263Troubleshooting Expansion Enclosure Management Modules 265 Troubleshooting a Damaged Array 270 272 Contents About This Document Introduction Dell PowerVault Modular Disk Storage Manager Dell PowerVault Modular Disk Configuration UtilityMD3600i Series Storage Array 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 Battery Backup Unit RAID Controller Module-Additional FeaturesStorage Array Thermal Shutdown Shutdown Threshold Type System Password Reset Cache Functions and FeaturesCache Mirroring Write-Back Cache 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 Virtual Disk Operations Segment SizeVirtual Disk Initialization Background Initialization Media Verification Consistency CheckCycle Time Foreground Initialization Disk Group Operations Virtual Disk Operations LimitRAID Level Migration Segment Size Migration Virtual Disk Capacity ExpansionDisk Group Expansion RAID Background Operations Priority Disk Group DefragmentationDisk Group Operations Limit 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 Virtual Disk Copy Source Virtual DiskTarget Virtual Disk Virtual Disk Recovery Using Snapshot and Disk Copy TogetherMulti-Path Software 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 Configuration About Your Storage Array Out-of-Band and In-Band ManagementOut-of-Band Management Storage Arrays Adding Storage ArraysIn-Band Management Automatic Discovery of Storage Arrays Manual Addition of a Storage ArraySelect Edit→ Add Storage Array Setting Up Your Storage Array Configuration About Your Storage Array Locating Storage Arrays AMW Setup tab, select Rename Storage ArrayNaming or Renaming Storage Arrays AMW, select Storage Array→ Blink→ Storage Array Name/Rename Storage Arrays dialog appears Setting a Password Password Type the New passwordPassword Guidelines Viewing Storage Array Connections Adding/Editing a Comment to an Existing Storage ArraySelect Edit→ Comment Enabling Premium Features Removing Storage ArraysSelect Edit→ Remove→ Storage Array Displaying Failover Alert Changing the Cache Settings on the Storage Array Changing Expansion Enclosure ID Numbers Changing the Enclosure Order in the Physical PaneAMW, select Storage Array→ Change→ Enclosure Order Configuring E-mail Alerts Configuring Alert NotificationsSelect Configure 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 Changing the iSCSI Target Authentication Configuration Using iSCSISelect Manage iSCSI Settings Enter the Target Chap secret Select the Mutual Authentication tab Entering Mutual Authentication PermissionsClick OK in the Manage iSCSI Settings window Creating Chap Secrets Target Chap Secret Initiator Chap SecretValid Characters for Chap Secrets Valid Ascii Characters for Chap Secrets Changing the iSCSI Target Identification Changing the iSCSI Target Discovery SettingsSelect the Target Identification tab Select the Target Discovery 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 Enabling or Disabling the Event Monitor WindowsLinux Configuring Host Access Configuration About Your Host Using the Mappings Tab Select Mappings→ Define→ Host Defining a Host Select Mappings→ Remove Removing Host Access Creating a Host Group Managing Host GroupsSelect Mappings→ Define→ Host Group Adding a Host to a Host Group Removing a Host From a Host Group Moving a Host to a Different Host GroupSelect Mappings→ Move Move Host Confirmation dialog appears Removing a Host Group Host Topology101 Linux Starting or Stopping the Host Context AgentWindows Click Action→ Start 103 Data Path Protection Managing Host Port Identifiers Add Host Port Identifier dialog appears104 105 106 Configuration Disk Groups and Virtual Disks Creating Disk Groups and Virtual Disks107 Creating Disk Groups Introduction Create Disk Group window is displayed108 109 Creating Virtual Disks Locating a Disk Group 111 112 Changing the Virtual Disk Modification Priority 113 Changing the Virtual Disk Cache Settings 114 Changing the Segment Size of a Virtual Disk Select Virtual Disk→ Change→ Segment Size115 Changing the I/O Type File system typical Database Multimedia Custom116 Choosing an Appropriate Physical Disk Type Physical Disk Security with Self Encrypting Disk117 118 119 Save Security Key File Validate Security Key Unlock Drives 120 Creating a Security Key 121 Changing a Security Key Click Create Key122 123 Confirm Change Security Key window is displayed Saving a Security Key Click Change Key124 Validate Security Key Unlocking Secure Physical Disks125 Configuring Hot Spare Physical Disks Erasing Secure Physical Disks126 Select Physical disk→ Hot Spare Coverage Hot Spare Physical Disk Options window is displayed127 Global Hot Spares Hot Spares and RebuildClick Unassign 128 Hot Spare Operation Hot Spare Drive Protection129 Enclosure Loss Protection 130Criteria for Enclosure Loss Protection RAID Level 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 Removing Host-to-Virtual Disk Mapping Select Virtual Disk→ Change→ Ownership/Preferred Path135 136 Select Disk Group→ Change→ Ownership/Preferred Path Changing the RAID Level of a Disk Group Restricted MappingsSelect Disk Group→ Change→ RAID Level 137 138 139 140 Changing the RAID Level of a Disk Group Storage Partitioning141 142 Disk Group and Virtual Disk Expansion Select Disk Group→ Add Free Capacity Physical Disks143 Using Unconfigured Capacity Using Free CapacityVirtual Disk Expansion 144 Export Disk Group Disk Group MigrationExporting a Disk Group Non-Exportable Components Import Disk Group Importing a Disk Group146 Storage Array Media Scan Non-Importable Components147 148 Changing Media Scan Settings 149 Suspending the Media Scan 150 151 Configuration Premium Feature- Snapshot Virtual Disks 152 Creating a Snapshot Virtual Disk Using the Simple Path About the Simple Path153 154 155 Creating a Snapshot Virtual Disk Using the Advanced Path About the Advanced Path156 157 158 159 Specify Virtual Disk Parameters window is displayed Creating the Snapshot Using the Advanced PathAutomatic Map later with Storage Partition 160 161 Specifying Snapshot Virtual Disk Names 162 163 Snapshot Repository Capacity 164 Click Add Physical Disks 165 Add Physical Disks window closes Disabling a Snapshot Virtual Disk Re-Creating Snapshot Virtual DisksSelect Virtual Disk→ Snapshot→ Re-create 166 167 Preparing Host Servers to Re-Create a Snapshot Virtual Disk Re-Creating a Snapshot Virtual Disk Select Virtual Disk → Snapshot→ Re-create168 169 Configuration Premium Feature- Virtual Disk Copy 170 Creating a Virtual Disk Copy for an Mscs Shared Disk 171 Virtual Disk Read/Write Permissions Virtual Disk Copy Restrictions Creating a Virtual Disk Copy172 Before you Begin Virtual Disk Copy and Modification Operations173 Create Copy Wizard Preferred RAID Controller Module OwnershipFailed Virtual Disk Copy 174 Copy Manager Failed RAID Controller ModuleCopying the Virtual Disk 175 176 Setting Copy Priority Storage Array Performance During Virtual Disk Copy177 Stopping a Virtual Disk Copy Select Change→ Copy Priority178 Recopying a Virtual Disk Preparing Host Servers to Recopy a Virtual Disk179 180 Recopying the Virtual Disk Removing Copy Pairs Select Copy→ Re-Copy181 182 183 184 185 Configuration Device Mapper Multipath for Linux Using DM Multipathing Devices Prerequisites186 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/mpathxpy Add a New Partition to Device MapperDev/mapper/mpathx-party Dev/mapper/mpathxparty Create a File System on a Device Mapper Partition Linux Host Server Reboot Best PracticesMount a Device Mapper Partition Ready For Use Useful Device Mapper Commands Description Important Information About Special Partitions192 193 Limitations and Known Issues Troubleshooting 194Question Answer 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 Downloading MD1200 Series Expansion Module EMM Firmware AMW, select Advanced→ Maintenance→ Download→ EMM FirmwareDownload Environmental EMM Firmware dialog appears 205 206 Self-Monitoring Analysis and Reporting Technology Smart 207 Media Errors and Unreadable Sectors 208 Management Installing Array Components Recommended Tools209 Front Bezel Optional Installing the Front BezelRemoving the Front Bezel 210 Hard Drives Safety Models AMT, E03J, and E04JRemoving a Drive Blank 211 Installing a Drive Blank Removing a Hard Drive212 213 Removing and Installing a Hard Drive 214 Installing a Hard Drive 215 Removing a Hard Drive From a Hard-Drive Carrier 216 RAID Controller Module Installing a Hard Drive Into a Drive CarrierRemoving a RAID Controller Module Blank 217 218 Installing a RAID Controller Module Blank 219 Removing a RAID Controller Module Installing a RAID Controller Module Opening the RAID Controller Module220 221 Closing the RAID Controller Module RAID Controller Module Backup Battery Unit Removing the RAID Controller Module Backup Battery Unit222 223 Installing the RAID Controller Module Backup Battery Unit Power Supply/Cooling Fan Module Removing a Power Supply/Cooling Fan Module224 225 226 Installing a Power Supply/Cooling Fan Module Control Panel Removing the Control Panel227 228 Installing the Control Panel Backplane Removing the Backplane229 230 17. Removing and Installing the Backplane-PowerVault MD3620i 16. Removing and Installing the Backplane-PowerVault MD3600i 232 Installing the Backplane Management Firmware Inventory Viewing the Firmware Inventory233 234 Virtual Disk Service Microsoft ServicesVolume Shadow-Copy Service Management System Interfaces 236 Start-Up Routine Troubleshooting Your Storage Array SoftwareDevice Health Conditions 237 On the Setup tab, select Manage a Storage Array 238Status Icon Description Additional Status Icons Description 239 240 Automatically Collect the Support Bundle Data Storage Array Support DataEnter the Execution summary 241 242 Retrieving Trace Buffers 243 Collecting Physical Disk Data Collect Physical Disk Data window is displayed244 245 Event Log Storage Array Profile Recovery GuruSelect Storage Array→ View→ Profile 246 247 Viewing the Logical Associations Viewing the Physical Associations248 249 Finding Nodes Select Find all free capacity nodes Using Go ToClick Find Next 250 251 Recovering From an Unresponsive Storage Array Condition 252 253 254 Locating a Physical Disk Locating an Expansion Enclosure Select Physical Disk→ Blink→ Expansion Enclosure255 256 Capturing the State Information 257 SMrepassist Utility Recovering From an Unidentified Storage Array Unidentified Devices258 259 260 261 Starting or Restarting the Host Context Agent Software 262 Troubleshooting Loss of Communication Troubleshooting Your ArrayTroubleshooting External Connections 263 264 Troubleshooting Power Supply/Cooling Fan Module Troubleshooting Array Cooling Problems Troubleshooting Expansion Enclosure Management Modules265 266 Troubleshooting RAID Controller Modules 267 268 Troubleshooting Hard Drives Troubleshooting Array and Expansion Enclosure Connections Troubleshooting a Wet Storage Array269 270 Troubleshooting a Damaged Array Conditions ECC ErrorsInvalid Storage Array 271 Critical Conditions PCI ErrorsNoncritical Conditions 272 Contacting Dell Getting HelpVisit support.dell.com Click All Support from Support menu 274 275 Index 276 277 278 279 Smart 280 281 282