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Dell PowerVault MD3620f Owner's Manual - Page 299

Troubleshooting a Damaged Array

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Troubleshooting a Damaged Array CAUTION: Many repairs may only be done by a certified service technician. You should only perform troubleshooting and simple repairs as authorized in your product documentation, or as directed by the online or telephone service and support team. Damage due to servicing that is not authorized by Dell is not covered by your warranty. Read and follow the safety instructions that came with the product. 1 Ensure that the following components are properly installed: • Hard drives • RAID controller modules • Power supply/cooling fan modules • Control panel • Backplane 2 Ensure that all the cables are properly connected and that there are no damaged pins in the connectors. 3 Run diagnostics available in Dell PowerVault Modular Disk (MD) Storage Manager software. In the AMW, select a component in the Physical pane of the Physical tab. Select Advanced Troubleshooting Run Diagnostics. If the test fails, see "Getting Help" on page 303. Troubleshooting: Your Array 299

Section	Page
Introduction	19
About This Document	19
Inside the Box of the Dell PowerVault MD3600f Series Storage Array	20
Dell PowerVault MD3600f Series Storage Array	20
Dell PowerVault Modular Disk Storage Manager	20
Other Information You May Need	21
Planning: About Your Storage Array	23
Overview	23
Hardware Features	24
Front-Panel Features and Indicators	24
Back Panel Features and Indicators	27
Hard-Drive Indicator Patterns	28
Power Supply and Cooling Fan Features	29
Power Indicator Codes	30
Planning: RAID Controller Modules	31
RAID Controller Modules	31
RAID Controller Module Connectors and Features	32
Host Channel LED Link/Rate Indications	34
RAID Controller Module-Additional Features	34
Battery Backup Unit	34
Storage Array Thermal Shutdown	35
System Password Reset	35
Cache Functions and Features	35
Cache Mirroring	35
Write-Back Cache	36
Write-Through Cache	36
SFP Transceivers, Fiber Optic, and SAS Cables	36
Interoperability of 2 Gbps, 4 Gbps, and 8 Gbps Devices	38
Planning: MD3600f Series Storage Array Terms and Concepts	39
Physical Disks, Virtual Disks, and Disk Groups	39
Physical Disks	40
Physical Disk States	40
Self-Monitoring Analysis and Reporting Technology	41
Virtual Disks and Disk Groups	41
Virtual Disk States	42
RAID Levels	43
RAID Level Usage	43
Segment Size	45
Virtual Disk Operations	45
Virtual Disk Initialization	45
Background Initialization	46
Foreground Initialization	46
Consistency Check	46
Media Verification	46
Cycle Time	47
Virtual Disk Operations Limit	47
Disk Group Operations	48
RAID Level Migration	48
Segment Size Migration	48
Virtual Disk Capacity Expansion	49
Disk Group Expansion	49
Disk Group Defragmentation	49
Disk Group Operations Limit	49
RAID Background Operations Priority	50
Virtual Disk Migration and Disk Roaming	51
Disk Migration	51
Disk Roaming	53
Advanced Features	53
Host Server-to-Virtual Disk Mapping	53
Host Types	54
Snapshot Virtual Disks	54
Snapshot Repository Virtual Disk	55
Virtual Disk Copy	55
Virtual Disk Recovery	56
Using Snapshot and Disk Copy Together	57
Multi-Path Software	57
Preferred and Alternate Controllers and Paths	57
Virtual Disk Ownership	58
Load Balancing	58
Monitoring MD3600f Series System Performance	59
Configuration: Overview	63
User Interface	63
Enterprise Management Window	64
Array Management Window	65
Configuration: About Your Storage Array	67
Out-of-Band and In-Band Management	67
Storage Arrays	68
Adding Storage Arrays	68
Setting Up Your Storage Array	70
Locating Storage Arrays	71
Naming or Renaming Storage Arrays	72
Setting a Password	73
Viewing Storage Array Connections	74
Adding/Editing a Comment to an Existing Storage Array	75
Removing Storage Arrays	75
Enabling Premium Features	76
Failover Alert Display	76
Changing the Cache Settings on the Storage Array	77
Changing Expansion Enclosure ID Number	77
Changing the Enclosure Order in the Physical Pane	78
Configuring Alert Notifications	78
Configuring E-mail Alerts	79
Configuring SNMP Alerts	81
Battery Settings	83
Setting the Storage Array RAID Controller Module Clocks	84
Configuration: Event Monitor	85
Enabling or Disabling the Event Monitor	86
Windows	86
Linux	86
Configuration: About Your Host	87
Configuring Host Access	87
Using the Mappings Tab	88
Defining a Host	88
Removing Host Access	90
Managing Host Groups	90
Creating a Host Group	91
Moving a Host to a Different Host Group	92
Removing a Host Group	92
Host Topology	93
Starting or Stopping the Host Context Agent	93
I/O Data Path Protection	94
Managing Host Port Identifiers	95
Configuration: Disk Groups and Virtual Disks	99
Creating Disk Groups and Virtual Disks	99
Creating Disk Groups	100
Locating a Disk Group	102
Creating Virtual Disks	102
Changing the Virtual Disk Modification Priority	104
Changing the Virtual Disk Cache Settings	105
Changing the Segment Size of a Virtual Disk	107
Changing the I/O Type	108
Choosing an Appropriate Physical Disk Type	109
Physical Disk Security With Self Encrypting Disk	110
Creating a Security Key	112
Changing a Security Key	114
Saving a Security Key	115
Unlocking Secure Physical Disks	117
Erasing Secure Physical Disks	117
Configuring Hot Spare Physical Disks	118
Hot Spares and Rebuild	120
Global Hot Spares	120
Hot Spare Operation	120
Hot Spare Drive Protection	121
Enclosure Loss Protection	121
Host-to-Virtual Disk Mapping	124
Creating Host-to-Virtual Disk Mappings	124
Modifying and Removing Host-to-Virtual Disk Mapping	126
Changing Controller Ownership of the Virtual Disk	127
Removing Host-to-Virtual Disk Mapping	128
Changing the RAID Controller Module Ownership of a Disk Group	128
Changing the RAID Level of a Disk Group	129
Restricted Mappings	130
Changing the RAID Controller Module Ownership of a Virtual Disk or a Disk Group	131
Changing the RAID Level of a Disk Group	133
Storage Partitioning	134
Disk Group and Virtual Disk Expansion	135
Disk Group Expansion	135
Virtual Disk Expansion	136
Using Free Capacity	136
Using Unconfigured Capacity	137
Disk Group Migration	137
Export Disk Group	137
Exporting a Disk Group	138
Import Disk Group	138
Importing a Disk Group	138
Storage Array Media Scan	139
Changing Media Scan Settings	140
Suspending the Media Scan	141
Configuration: Premium Feature- Snapshot Virtual Disks	143
Creating a Snapshot Virtual Disk Using the Simple Path	144
About the Simple Path	145
Preparing Host Servers to Create the Snapshot Using the Simple Path	145
Creating a Snapshot Virtual Disk Using the Advanced Path	148
About the Advanced Path	148
Preparing Host Servers to Create the Snapshot Using the Advanced Path	149
Creating the Snapshot Using the Advanced Path	151
Specifying Snapshot Virtual Disk Names	153
Snapshot Repository Capacity	154
Re-creating Snapshot Virtual Disks	157
Disabling a Snapshot Virtual Disk	158
Preparing Host Servers to Re-create a Snapshot Virtual Disk	159
Re-creating a Snapshot Virtual Disk	160
Configuration: Premium Feature- Virtual Disk Copy	161
Creating a Virtual Disk Copy for an MSCS Shared Disk	162
Virtual Disk Read/Write Permissions	163
Virtual Disk Copy Restrictions	164
Creating a Virtual Disk Copy	165
Before You Begin	165
Virtual Disk Copy and Modification Operations	166
Create Copy Wizard	166
Failed Virtual Disk Copy	166
Preferred RAID Controller Module Ownership	167
Failed RAID Controller Module	167
Copy Manager	167
Copying the Virtual Disk	168
Storage Array Performance During Virtual Disk Copy	169
Setting Copy Priority	169
Stopping a Virtual Disk Copy	170
Recopying a Virtual Disk	170
Preparing Host Servers to Recopy a Virtual Disk	171
Recopying the Virtual Disk	172
Removing Copy Pairs	173
Configuration: Premium Feature- Upgrading to High-Performance Tier	175
Configuration: Premium Feature- Remote Replication	177
Switchable Host Access Configuration Required With Remote Replication	177
Activating Remote Replication	178
Replication Repository Virtual Disks	178
RAID Levels for Replication Repository Virtual Disks	179
Primary and Secondary Virtual Disk Pairs	179
Using Remote Replication With Other Features	180
Storage Partitioning With Remote Replication	180
Snapshot Virtual Disk With Remote Replication	181
Virtual Disk Copy With Remote Replication	181
Virtual Disk Expansion With Remote Replication	181
Required Switch Zoning Configurations	182
Zoning Guidelines for Remote Replication	182
Switch Cascading	182
Journaling File Systems and Remote Replication	183
Setting Up and Managing Remote Replication	183
Activating the Remote Replication Premium Feature and Creating Replication Virtual Disks	184
Activating and Creating Replication Repository Virtual Disks From the Storage Array	184
Activating and Creating Replication Repository Virtual Disks From an Existing Disk Group	185
Creating a Remote Replication	186
Selecting the Secondary Virtual Disk	187
Setting the Write Mode	187
Setting Synchronization Priority and Synchronization Method	188
Completing the Remote Replication	189
RAID Controller Module Ownership/Preferred Path	190
Viewing Information About a Remote Replication or Replication Repository Virtual Disk	190
Viewing the Properties Pane	192
Viewing Logical Elements of the Secondary Virtual Disk	192
Viewing the Physical Components or Logical Elements of the Primary Virtual Disk	193
Virtual Disk Status Icons	194
Changing Write Mode and Consistency Group Membership	194
Resynchronizing Virtual Disks	196
Normally Synchronized Virtual Disks	196
Changing Synchronization Priority and Method	197
Unsynchronized Virtual Disks	199
Automatically Resynchronizing Virtual Disks	200
Manually Resynchronizing Virtual Disks	200
Reversing Roles Between the Primary and Secondary Virtual Disks	201
Promoting the Secondary Virtual Disk or Demoting the Primary Virtual Disk	202
Suspending a Remote Replication	202
Resuming a Remote Replication	203
About Resumed Remote Replications	203
Testing Communication Between the Primary and Secondary Virtual Disks	204
Deleting a Virtual Disk From a Replicated Pair in a Storage Array	205
Deleting a Primary Virtual Disk	205
Deleting a Secondary Virtual Disk	206
Deleting a Primary Virtual Disk in a Replicated Pair From a Storage Array	206
Deleting a Secondary Virtual Disk in a Replicated Pair From a Storage Array	207
Removing a Remote Replication From a Storage Array	207
Deactivating the Remote Replication on the Storage Array	208
Disabling the Remote Replication Premium Feature	209
Configuration: Device Mapper Multipath for Linux	211
Overview	211
Using DM Multipathing Devices	212
Prerequisites	212
Device Mapper Configuration Steps	213
Limitations and Known Issues	218
Troubleshooting	219
Management: Installing Array Components	221
Recommended Tools	221
Front Bezel (Optional)	222
Removing the Front Bezel	222
Installing the Front Bezel	222
Hard Drives	223
Removing a Drive Blank	223
Installing a Drive Blank	224
Removing a Hard Drive	224
Installing a Hard Drive	226
Removing a Hard Drive From a Hard-Drive Carrier	227
Installing a Hard Drive Into a Drive Carrier	229
RAID Controller Module	229
Removing a RAID Controller Module Blank	229
Installing a RAID Controller Module Blank	230
Removing a RAID Controller Module	231
Installing a RAID Controller Module	232
Opening the RAID Controller Module	233
Closing the RAID Controller Module	234
RAID Controller Module Backup Battery Unit	235
Removing the RAID Controller Module Backup Battery Unit	235
Installing the RAID Controller Module Backup Battery Unit	236
Power Supply/Cooling Fan Module	237
Removing a Power Supply/Cooling Fan Module	237
Installing a Power Supply/Cooling Fan Module	238
Control Panel	239
Removing the Control Panel	239
Installing the Control Panel	241
Backplane	242
Removing the Backplane	242
Installing the Backplane	245
Management: Firmware Downloads	247
Downloading RAID Controller and NVSRAM Packages	247
Downloading Both RAID Controller and NVSRAM Firmware	248
Downloading Only NVSRAM Firmware	250
Downloading Physical Disk Firmware	253
Downloading MD1200 Series Expansion Module EMM Firmware	255
Self-Monitoring Analysis and Reporting Technology (SMART)	256
Media Errors and Unreadable Sectors	257
Management: Firmware Inventory	259
Viewing the Firmware Inventory	259
Management: System Interfaces	261
Microsoft Services	261
Virtual Disk Service	261
Volume Shadow-Copy Service	261
Troubleshooting: Your Storage Array Software	263
Start-Up Routine	263
Device Health Conditions	263
Storage Array Support Data	266
Automatically Collect the Support Bundle Data	267
Collecting the Physical Disk Data	268
Event Log	269
Recovery Guru	270
Storage Array Profile	270
Viewing the Logical Associations	272
Viewing the Physical Associations	273
Finding Nodes	273
Using Go To	275
Recovering From an Unresponsive Storage Array Condition	276
Locating a Physical Disk	279
Locating an Expansion Enclosure	279
Capturing the State Information	280
SMrepassist Utility	281
Unidentified Devices	282
Recovering From an Unidentified Storage Array	282
Starting or Restarting the Host Context Agent Software	285
Troubleshooting: Your Array	289
Safety First-For You and Your Array	289
Troubleshooting Storage Array Startup Failure	289
Troubleshooting Loss of Communication	289
Troubleshooting an SFP Transceiver	289
Troubleshooting External Connections	292
Troubleshooting Power Supply/Cooling Fan Module	292
Troubleshooting Array Cooling Problems	293
Troubleshooting Expansion Enclosure Management Modules	294
Troubleshooting RAID Controller Modules	295
Troubleshooting Hard Drives	296
Troubleshooting Array and Expansion Enclosure Connections	297
Troubleshooting a Wet Storage Array	298
Troubleshooting a Damaged Array	299
Troubleshooting RAID Controller Modules	300
Conditions	300
Getting Help	303
Contacting Dell	303