APC 15000 RAID 8.9 Replacing the DEM

Drive Enclosure Troubleshooting

007-5510-002 127

spindown the drives prior to removal. If this is not possible, we recommend that you perform All steps of

the following procedure to ensure that the drive has stopped prior to removal:

To Insert the Drive Carrier Module

1Release the carrier handle by sliding the latch backwards.

2Insert the carrier into the enclosure.

3Slide the drive carrier, gently, all the way into the enclosure.

4Cam the drive carrier home. The camming foot on the base of the carrier will engage into a slot in the

enclosure.

5When the carrier is fully home, close the handle. You should hear a click as the latch engages and holds

the handle closed.

6Close the enclosure.

8.9 Replacing the DEM

Important The DEM card should only be replaced by trained personnel.

Contents

Main Page Page Page Page Page Preface International Standards Potential for Radio Frequency Interference Page Safety Page Recycling of Waste Electrical and Electronic Equipment (WEEE) Rack System Precautions ESD Precautions Data Security Page Page Chapter 1 Introduction 1.1 Controller Features 1.2 The Controller Hardware Introduction 007-5510-002 3 Figure 11 SGI InfiniteStorage 15000 IB - Front and Rear Views Rear P D F 1.2.1 Power Supply and Fan Modules Introduction 007-5510-002 5 1.2.2 I/O Connectors and Status LED Indicators Figure 13 shows the ports at the back of the controller 4 Infiniband (IB) unit. IB LEDs e 2 Page STATUS Page 1.2.3 Uninterruptible Power Supply (UPS) Page Chapter 2 Controller Installation 2.1 Setting Up the Controller 2.2 Unpacking the System 2.2.1 Rack-Mounting the Controller Chassis 2.2.2 Connecting the Controller in Dual Mode 2.2.3 Connecting the Controller 2.2.4 Selecting SAS- ID for Your Drives 2.2.5 Laying Out your Storage Drives 2.2.6 Connecting the RS-232 Terminal 2.2.6.1 Basic Key Operations 2.2.7 Powering On the Controller 2.3 Configuring the Controller 2.3.1 Planning Your Setup and Configuration 2.3.2 Configuration Interface 2.3.3 Login as Administrator 2.3.4 Setting System Time & Date 2.3.5 Setting Tier Mapping Mode 2.3.6 Checking Tier Status and Configuration tier config<Enter> 2.3.6.1 Heading Definitions 2.3.7 Cache Coherency and Labeling in Dual Mode dual label<Enter> 2.3.8 Configuring the Storage Arrays 1 <Enter> Page 2.3.9 Setting Security Levels 2.3.9.1 User Authentication (Recommended for SAN Environment) Page Page 2.3.9.2 Host Port Zoning (Anonymous Access) Page 007-5510-002 29 Chapter 3 Controller Management 3.1 Managing the Controller CLI (RS-232 Interface) 3.1.1 Management Interface 3.1.2 Available Commands 3.1.3 Administrator and User Logins 3.1.3.1 Login 3.1.3.2 Logout 3.1.3.3 Password whoami<Enter> 3.1.3.4 Who Am I 3.2 Configuration Management 3.2.1 Configure and Monitor Status of Host Ports Page 3.2.2 Configure and Monitor Status of Storage Assets 007-5510-002 35 Figure 39 Disk Channel Screen Figure 310 Disk Status Screen Page Page 3.2.2.1 Tier View 3.2.2.2 Tier Configuration 40 007-5510-002 Figure 314 Tier Configuration ALL Screen 3.2.2.3 LUN View Entering the LUN command displays the current status of the LUNs ( Figure 315 LUN Status Screen 007-5510-002 41 Figure 316 LUN List Screen 3.2.2.4 LUN Configuration Figure 317 LUN Configuration Screen 3.2.2.5 LUN Reservations Figure 318 LUN Reservations Screen 3.2.2.6 Adding/Removing Storage Assets 3.2.3 Tier Mapping for Enclosures 3.2.4 System Network Configuration 3.2.4.1 Telnet 3.2.4.2 SNMP & Syslog 3.2.4.3 API Server Connections 3.2.4.4 Displaying and Editing the Routing Table 3.2.5 Restarting the Controller 3.2.5.1 System Restart 3.2.5.2 System Shutdown 3.2.6 Setting the Systems Date and Time 3.2.6.1 System Date 3.2.6.2 System Time 3.2.7 Saving the Controllers Configuration 3.2.8 Restoring the Systems Default Configuration 3.2.9 LUN Management 3.2.9.1 Configuring the Storage Array 3.2.9.2 Creating a LUN 3.2.9.3 Formatting a LUN 3.2.9.4 Interrupting a LUN Format Operation 3.2.9.5 Changing a LUN Label lun label <Enter>. 3.2.9.6 Moving a LUN (Dual Mode Only) 3.2.10 Automatic Drive Rebuild 3.2.10.1 Manual Drive Rebuild 3.2.10.2 Drive Rebuild Verify 3.2.10.3 Manual Drive Replace 3.2.10.4 Interrupting a Rebuild Operation 3.2.11 SMART Command Page 3.2.12 Couplet Controller Configuration (Cache/Non-Cache Coherent) 3.2.12.1 Cache Coherent Non-Cache Coherent 3.2.12.2 Fail / Restore the Other Controller Unit in the Couplet Pair 3.2.12.3 Labeling the Controller Unit(s) 3.2.12.4 Singlet 3.3 Performance Management 3.3.1 Optimizing I/O Request Patterns Display Current Cache Settings 3.3.1.1 Cache Segment Size 3.3.1.2 Writeback Cache Settings 3.3.1.3 Prefetch Settings 3.3.1.4 Cache Settings Reset Disk Configuration Settings 3.3.2 Audio/Visual Settings of the System 3.3.3 Locking LUN in Cache 3.3.3.1 Locking / Unlocking a LUN 3.3.3.2 System Performance Statistics Page Page 007-5510-002 63 Figure 335 Host Delay Statistics Screen Figure 336 Tier Delay Statistics Screen Page Page 3.3.4 Resources Allocation Background Format/Rebuild Operations 3.3.4.1 Background LUN Verify Operations 3.3.4.2 Background TIER Verify Operations Page 3.3.4.3 Rebuild Journaling Page 3.3.4.4 SES Device Monitoring Rate 3.3.4.5 Host Command Timeout 3.4 Security Administration 3.4.1 Monitoring User Logins 3.4.2 Zoning (Anonymous Access) 3.4.3 User Authentication 3.5 Firmware Update Management 3.5.1 Displaying Current Firmware Version 3.5.2 Firmware Update Procedure 3.6 Remote Login Management 3.6.1 When a Telnet Session is Active Page 3.7 System Logs 3.7.1 Message Log 3.7.2 System and Drive Enclosure Faults 3.7.3 Displaying System Uptime 3.7.4 Saving a Comment to the Log 3.8 Other Utilities 3.8.1 APC UPS SNMP Trap Monitor 3.8.2 API Server Connections 3.8.3 Changing Baud Rate for the CLI Interface 3.8.4 CLI/Telnet Session Control Settings 3.8.5 Disk Diagnostics 3.8.6 Disk Reassignment and Miscellaneous Disk Commands 3.8.7 SPARE Commands Page Troubleshooting 007-5510-002 85 Chapter 4 Controller Remote Management and Troubleshooting 4.1 Remote Management of the Controller Telnet port 4.1.1 Network Connection Figure 41 Telnet Port on the Controller Page a) Ping a host on the same subnet as the controller. b) Ping another host on a different subnet. 4.1.3 Login Names and Passwords 4.1.4 SNMP Set Up on Host Computer 4.1.4.1 Controller Implementation of SNMP InfiniteStorage 15000 MIB (The InfiniteStorage 15000 MIB is read only.) 4.1.4.2 Traps 4.2 Troubleshooting the Controller 4.2.1 Component Failure Recovery 4.2.1.1 Power Supply Failure 4.2.1.2 Fan Failure 4.2.2 Recovering from Drive Failures 4.2.2.1 Single Drive Failures 4.2.2.2 Returning the System to a Fault-Tolerant State 4.2.2.3 Manually Replacing a Failed Disk with Spare Disk 4.2.2.4 Changing the Rate of Rebuild 4.2.2.5 Interrupting the Rebuild Operation 4.2.2.6 Multiple Drive and Channel Failures 4.2.3 Component Failure on Enclosures Page 5.2 Enclosure Core Product 5.2.1 Enclosure Chassis 5.3 The Plug-in Modules 5.3.1 Power Cooling Module (PCM) 5.3.2 Input/Output (I/O) Module Page 5.3.3 Drive Carrier Module and Status Indicator 5.3.4 DEM Card 5.4 Indicators 5.4.1 Front Panel Drive Activity Indicators Page Page 5.4.2 Internal Indicators 5.4.3 Rear of Enclosure Activity Indicators 5.5 Visible and Audible Alarms 5.6 Drive Enclosure Technical Specification 5.6.1 Dimensions 5.6.2 Weight 5.6.3 AC INPUT PCM 5.6.4 DC INPUT PCM 5.6.5 DC OUTPUT PCM 5.6.6 PCM Safety and EMC Compliance 5.7 Environment Page Chapter 6 Drive Enclosure Installation 6.1 Introduction 6.2 Planning Your Installation 6.2.1 Enclosure Bay Numbering Convention Bay B I/O Bay A I/O Page 6.3 Enclosure Installation Procedures 6.4 I/O Module Configurations 6.4.1 Controller Options Page Page Chapter 7 Drive Enclosure Operation 7.1 Before You Begin 7.2 Power On / Power Down 7.2.1 PCM LEDs 7.2.2 I/O Panel LEDs Chapter 8 Drive Enclosure Troubleshooting 8.1 Overview 8.2 Initial Start-up Problems 8.2.1 Faulty Cords 8.2.2 Alarm Sounds On Power Up 8.3 LEDs 8.3.1 HDD (Hard Disk Drive) 8.3.2 PCM (Power Cooling Module) 8.3.3 DEM (Drive Expander Module) 8.3.4 I/O Module 8.3.5 Front Panel Drive Activity Indicators 8.4 Audible Alarm 8.4.1 Top Cover Open 8.4.2 SES Command 8.5 Troubleshooting 8.5.1 Thermal Control Page 8.5.2 Thermal Alarm 8.5.3 Thermal Shutdown 8.6 Dealing with Hardware Faults 8.7 Continuous Operation During Replacement 8.8 Replacing a Module 8.8.1 Power Cooling Modules Page 8.8.2 I/O Module 8.8.3 Replacing the Drive Carrier Module 8.9 Replacing the DEM Page A Controller Technical Specifications Page B Drive Addressing Page 007-5510-002 133 Figure B4 Channel P/S Controller #1 Controller #2 Channel A/B Page Page Figure C1 Controller Cabling (2 Controllers and 5 Drive Enclosures) Figure C2 Drive Enclosure Cabling (2 Controllers and 5 Drive Enclosures) Figure C3 Controller Cabling (2 Controllers and 10 Drive Enclosures) 007-5510-002 Figure C4 Drive Enclosure Cabling (2 Controllers and 10 Drive Enclosures)