Dell PowerVault MD Series - Page 222

Dell PowerVault MD Series

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repository virtual disk names. The resulting snapshot and repository names are too long if the source virtual disk

name exceeds 16 characters.

NOTE: A volume is another term for virtual disk.

For more information on VDS and VSS, see microsoft.com.

222

Table of Contents

Notes, Cautions, and Warnings2
- Table of Contents3
1 Introduction15
- Dell Powervault Modular Disk Storage Manager15
- User Interface15
- Enterprise Management Window15
  - Inheriting the System Settings16
- Array Management Window16
- Dell Powervault Modular Disk Configuration Utility17
- Other Information You May Need17
2 About Your MD Series Storage Array19
- Physical Disks, Virtual Disks, and Disk Groups19
- Disk Pools21
- Thin Virtual Disks21
- RAID Levels21
- Segment Size23
- Virtual Disk Operations23
- Disk Group Operations24
- RAID Background Operations Priority26
- Virtual Disk Migration and Disk Roaming26
- Advanced Features28
- Multi-Path Software30
  - Preferred and Alternate Controllers and Paths31
  - Virtual Disk Ownership31
- Load Balancing31
- Monitoring System Performance32
  - Monitoring Performance Using the Tabular View32
  - Monitoring Performance Using the Graphical View33
3 Discovering and Managing Your Storage Array35
- Out-Of-Band Management35
- In-Band Management35
  - Access Virtual Disk36
- Storage Arrays36
  - Automatic Discovery of Storage Arrays36
  - Manual Addition of a Storage Array36
- Setting up Your Storage Array37
- Configuring Alert Notifications41
  - Configuring E-Mail Alerts42
  - Configuring SNMP Alerts43
- Battery Settings44
  - Changing the Battery Settings44
- Setting the Storage Array RAID Controller Module Clocks44
4 Using Iscsi47
- Changing the Iscsi Target Authentication47
- Entering Mutual Authentication Permissions47
- Creating CHAP Secrets48
- Changing the Iscsi Target Identification49
- Changing the Iscsi Target Discovery Settings49
- Configuring the Iscsi Host Ports49
- Advanced Iscsi Host Port Settings50
- Viewing or Ending an Iscsi Session51
- Viewing Iscsi Statistics and Setting Baseline Statistics51
- Edit, Remove, or Rename Host Topology52
5 Event Monitor53
- Enabling or Disabling the Event Monitor53
  - Windows53
  - Linux53
6 About Your Host55
- Configuring Host Access55
- Using the Host Mappings Tab55
  - Defining a Host56
- Removing Host Access57
- Managing Host Groups57
- Creating a Host Group57
- I/O Data Path Protection59
- Managing Host Port Identifiers60
7 Disk Groups, Standard Virtual Disks, and Thin Virtual Disks63
- Creating Disk Groups and Virtual Disks63
- Thin Virtual Disks69
- Choosing an Appropriate Physical Disk Type75
- Physical Disk Security with Self Encrypting Disk75
- Configuring Hot Spare Physical Disks80
- Enclosure Loss Protection83
- Drawer Loss Protection83
- Host-To-Virtual Disk Mapping84
- Restricted Mappings89
- Storage Partitioning90
- Disk Group and Virtual Disk Expansion91
- Disk Group Migration92
  - Export Disk Group92
  - Import Disk Group93
- Storage Array Media Scan94
  - Changing Media Scan Settings94
  - Suspending the Media Scan95
8 Disk Pools and Disk Pool Virtual Disks97
- Difference between Disk Groups and Disk Pools97
- Disk Pool Restrictions97
- Creating a Disk Pool Manually98
- Automatically Managing the Unconfigured Capacity in Disk Pools99
- Locating Physical Disks in a Disk Pool99
- Renaming a Disk Pool100
- Configuring Alert Notifications for a Disk Pool100
- Adding Unassigned Physical Disks to a Disk Pool101
- Configuring the Preservation Capacity of a Disk Pool101
- Changing the Modification Priority of a Disk Pool102
- Changing the RAID Controller Module Ownership of a Disk Pool102
- Checking Data Consistency103
- Deleting a Disk Pool104
- Viewing Storage Array Logical Components and Associated Physical Components104
- Secure Disk Pools105
- Changing Capacity on Existing Thin Virtual Disks106
- Creating a Thin Virtual Disk from a Disk Pool106
9 Using SSD Cache109
- How SSD Cache Works109
- Benefits of SSD Cache109
- Choosing SSD Cache Parameters109
- SSD Cache Restrictions110
- Creating an SSD Cache110
- Viewing Physical Components Associated with an SSD Cache110
- Locating Physical Disks in an SSD Cache111
- Adding Physical Disks to an SSD Cache111
- Removing Physical Disks from an SSD Cache111
- Suspending or Resuming SSD Caching112
- Changing I/O Type in an SSD Cache112
- Renaming an SSD Cache112
- Deleting an SSD Cache112
- Using the Performance Modeling Tool113
10 Premium Feature-Snapshot Virtual Disk115
- Snapshot Virtual Disk Vs. Snapshot Virtual Disk (Legacy)115
- Snapshot Images and Groups115
- Snapshot Virtual Disk Read/Write Properties116
- Snapshot Groups and Consistency Groups116
  - Snapshot Groups116
  - Snapshot Consistency Groups117
- Understanding Snapshot Repositories117
- Creating Snapshot Images118
- Scheduling Snapshot Images120
  - Creating a Snapshot Schedule121
  - Editing a Snapshot Schedule121
- Performing Snapshot Rollbacks122
- Creating a Snapshot Group125
- Converting Snapshots (Legacy) to a Snapshot Group129
  - Conversion Limitations129
  - Converting Snapshots (Legacy)129
- Converting a Snapshot Virtual Disk to Read-Write130
- Viewing Associated Physical Components of an Individual Repository Virtual Disk130
- Creating a Consistency Group131
- Creating a Snapshot Virtual Disk of a Snapshot Image136
- Creating a Consistency Group Snapshot Virtual Disk142
11 Premium Feature-Snapshot Virtual Disks (Legacy)153
- Scheduling a Snapshot Virtual Disk154
  - Common Reasons for Scheduling a Snapshot Virtual Disk154
  - Guidelines for Creating Snapshot Schedules154
- Creating a Snapshot Virtual Disk Using the Simple Path154
  - About the Simple Path155
  - Preparing Host Servers to Create the Snapshot Using the Simple Path155
- Creating a Snapshot Virtual Disk Using the Advanced Path156
- Specifying Snapshot Virtual Disk Names159
- Snapshot Repository Capacity160
- Re-Creating Snapshot Virtual Disks161
- Disabling a Snapshot Virtual Disk162
  - Preparing Host Servers to Re-Create a Snapshot Virtual Disk162
- Re-Creating a Snapshot Virtual Disk163
12 Premium Feature-Virtual Disk Copy165
- Using Virtual Disk Copy with Snapshot or Snapshot (Legacy) Premium Feature165
- Types of Virtual Disk Copies166
  - Offline Copy166
  - Online Copy166
- Creating a Virtual Disk Copy for an MSCS Shared Disk166
- Virtual Disk Read/Write Permissions167
- Virtual Disk Copy Restrictions167
- Creating a Virtual Disk Copy168
- Preferred RAID Controller Module Ownership169
- Failed RAID Controller Module169
- Copy Manager170
- Copying the Virtual Disk170
- Storage Array Performance During Virtual Disk Copy171
- Setting Copy Priority171
- Stopping a Virtual Disk Copy171
- Recopying a Virtual Disk172
  - Preparing Host Servers to Recopy a Virtual Disk172
  - Recopying the Virtual Disk173
- Removing Copy Pairs173
13 Device Mapper Multipath for Linux175
- Overview175
- Using DM Multipathing Devices175
  - Prerequisites175
- Device Mapper Configuration Steps176
- Linux Host Server Reboot Best Practices178
- Important Information about Special Partitions179
- Limitations and Known Issues179
- Troubleshooting180
14 Configuring Asymmetric Logical Unit Access181
- ALUA Performance Considerations181
- Automatic Transfer of Ownership181
- Native ALUA Support on Microsoft Windows and Linux181
- Enabling ALUA on Vmware Esx/Esxi181
  - Manually Adding SATP Rule in ESX 4.1 (Update 1 and Update 2)181
  - Manually Adding SATP Rule in Esx/Esxi 5.0182
- Verifying ALUA on Vmware Esx/Esxi182
- Verifying if Host Server Is Using ALUA for MD Storage Array182
- Setting Round-Robin Load Balancing Policy on Esx/Esxi-Based Storage Arrays183
15 Premium Feature-Remote Replication185
- About Asynchronous Remote Replication185
- Remote Replicated Pairs and Replication Repositories185
- Types of Remote Replication186
  - Differences between Remote Replication Features186
  - Upgrading to Asynchronous Remote Replication from Remote Replication (Legacy)186
- Remote Replication Requirements and Restrictions187
  - Restrictions on Using Remote Replication187
- Setting up Remote Replication187
- Activating Remote Replication Premium Features188
- Deactivating Remote Replication188
- Remote Replication Groups189
- Replicated Pairs190
16 Premium Feature-Remote Replication (Legacy)193
- Overview193
- Switchable Host Access Configuration Required with Remote Replication (Legacy)193
- Activating Remote Replication (Legacy)194
- Replication Repository Virtual Disks194
- RAID Levels for Replication Repository Virtual Disks194
- Primary and Secondary Virtual Disk Pairs194
- Using Remote Replication (Legacy) with Other Features195
- Storage Partitioning with Remote Replication (Legacy)195
- Snapshot Virtual Disk with Remote Replication (Legacy)195
- Virtual Disk Copy with Remote Replication (Legacy)195
- Virtual Disk Expansion with Remote Replication (Legacy)196
- Required Switch Zoning Configurations196
- Zoning Guidelines for Remote Replication (Legacy)196
- Switch Cascading197
- Journaling File Systems and Remote Replication (Legacy)197
- Prerequisites for Setting up and Managing Remote Replication (Legacy)197
- Activating the Remote Replication (Legacy) Premium Feature and Creating Replication Virtual Disks197
- Activating and Creating Replication Repository Virtual Disks from the Storage Array197
- Activating and Creating Replication Repository Virtual Disks from an Existing Disk Group198
- Creating a Remote Replication (Legacy)198
- Selecting the Secondary Virtual Disk199
- Setting the Write Mode199
- Setting Synchronization Priority and Synchronization Method200
- Completing the Remote Replication (Legacy)200
- RAID Controller Module Ownership/Preferred Path201
- Viewing Information about a Remote Replication (Legacy) or Replication Repository (Legacy) Virtual Disk201
  - Viewing the Storage Array Profile201
  - Viewing the Properties Pane202
  - Viewing Logical Elements of the Secondary Virtual Disk202
  - Viewing the Physical Components or Logical Elements of the Primary Virtual Disk202
  - Virtual Disk Status Icons203
  - Changing Write Mode and Consistency Group Membership203
  - Resynchronizing Virtual Disks204
  - Normally Synchronized Virtual Disks204
  - Changing Synchronization Priority and Method205
  - Unsynchronized Virtual Disks205
  - Automatically Resynchronizing Virtual Disks206
  - Manually Resynchronizing Virtual Disks206
  - Reversing Roles between the Primary and Secondary Virtual Disks206
  - Promoting the Secondary Virtual Disk or Demoting the Primary Virtual Disk207
  - Suspending a Remote Replication (Legacy)207
  - Resuming a Remote Replication (Legacy)207
  - About Resumed Remote Replications208
  - Testing Communication between the Primary and Secondary Virtual Disks208
  - Deleting a Virtual Disk from a Replicated Pair in a Storage Array209
17 Management Firmware Downloads213
- Downloading RAID Controller and NVSRAM Packages213
- Downloading both RAID Controller and NVSRAM Firmware213
- Downloading Only NVSRAM Firmware215
- Downloading Physical Disk Firmware216
- Downloading Md3060E Series Expansion Module EMM Firmware217
- Self-Monitoring Analysis and Reporting Technology (SMART)218
- Media Errors and Unreadable Sectors218
18 Firmware Inventory219
- Viewing the Firmware Inventory219
19 System Interfaces221
- Virtual Disk Service221
- Volume Shadow-Copy Service221
20 Storage Array Software223
- Start-Up Routine223
- Device Health Conditions223
- Trace Buffers225
  - Retrieving Trace Buffers226
- Collecting Physical Disk Data226
- Event Log228
  - Viewing the Event Log228
- Recovery Guru229
- Storage Array Profile229
- Viewing the Physical Associations230
- Recovering from an Unresponsive Storage Array Condition230
- Locating a Physical Disk232
- Locating an Expansion Enclosure232
- Capturing the State Information233
- Smrepassist Utility233
- Unidentified Devices234
- Recovering from an Unidentified Storage Array234
- Starting or Restarting the Host Context Agent Software235
  - Starting the Smagent Software in Windows235
  - Starting the Smagent Software in Linux235
    - Getting Help237
    - Contacting Dell237

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