HP ProLiant ML350 Maintenance and Service Guide

ProLiant ML350

Maintenance and Service Guide

Fourth Edition (March 2002) Part Number 122832-004 Spare Part Number 164275-001 Compaq Computer Corporation

Notice

Compaq, the Compaq logo, Compaq Insight Manager, ProLiant, ROMPaq, SmartStart, Netelligent, SoftPaq, and QuickFind are trademarks of Compaq Information Technologies Group, L.P. in the U.S. and/or other countries. Microsoft, MS-DOS, Windows, and Windows NT are trademarks of Microsoft Corporation in the U.S. and/or other countries.

Intel, Pentium, Celeron, and Xeon are registered trademarks of Intel Corporation in the United States and/or other countries.

The Open Group and UNIX are trademarks of The Open Group in the U.S. and/or other countries.

All other product names mentioned herein may be trademarks of their respective companies.

Compaq shall not be liable for technical or editorial errors or omissions contained herein. The information in this document is provided “as is” without warranty of any kind and is subject to change without notice. The warranties for Compaq products are set forth in the express limited warranty statements accompanying such products. Nothing herein should be construed as constituting an additional warranty.

Compaq ProLiant ML350 Maintenance and Service Guide Fourth Edition (March 2002) Part Number 122832-004 Spare Part Number 164275-001

About This Guide

Symbols in Text.........................................................................................................vii

Compaq Technician Notes .......................................................................................viii

Where to Go for Additional Help...............................................................................ix

Integrated Management Log ...............................................................................ix

Telephone Numbers ............................................................................................ix

Chapter 1

Illustrated Parts Catalog

Mechanical Parts Exploded View.............................................................................1-2

Mechanical Spare Parts List .....................................................................................1-3

System Components Exploded View .......................................................................1-4

System Components Spare Parts List.......................................................................1-5

Chapter 2

Removal and Replacement Procedures

Electrostatic Discharge Information.........................................................................2-2

Symbols on Equipment ............................................................................................2-2

Preparation Procedures.............................................................................................2-4

Rack Warnings .........................................................................................................2-4

Server Warnings and Precautions.............................................................................2-5

Front Bezel Door......................................................................................................2-6

Access Panel.............................................................................................................2-7

Removable Media Blank ..........................................................................................2-8

Cable Routing Diagrams ..........................................................................................2-9

System Fan Module................................................................................................2-11

Drive Bay Configuration........................................................................................2-14

Non-Hot-Plug Hard Drive ......................................................................................2-15

Non-Hot-Plug Hard Drive Cage.............................................................................2-18

Hot-Plug Hard Drive or Drive Blank .....................................................................2-20

Hot-Plug Hard Drive Cage .....................................................................................2-21

Removable Media Devices and Mass Storage Devices..........................................2-22

Expansion Slots ......................................................................................................2-25

Expansion Board (Server Feature Board)...............................................................2-26

Memory ..................................................................................................................2-28

Memory Module.....................................................................................................2-29

Memory Combinations...........................................................................................2-30

Processor ................................................................................................................2-31

Processor Terminator Module................................................................................2-33

Processor Power Module (PPM) ............................................................................2-34

iv Compaq ProLiant ML350 Maintenance and Service Guide

Removal and Replacement Procedures

continued

System Board .........................................................................................................2-35

Batteries..................................................................................................................2-37

Replacing the System Board Battery...............................................................2-38

Replacing the Server Feature Board Battery...................................................2-39

Power Supply .........................................................................................................2-40

Feet.........................................................................................................................2-41

Chapter 3

Diagnostics and Troubleshooting

Diagnostic Tools Utility Overview...........................................................................3-2

Default Configuration...............................................................................................3-4

Inspect Utility...........................................................................................................3-4

Running the Inspect Utility ...............................................................................3-4

Printing the Inspect Listing ...............................................................................3-4

Utilities Access.........................................................................................................3-5

Running Compaq Utilities.................................................................................3-5

Power-On Self-Test (POST) Error Messages...........................................................3-6

Diagnostics Software..............................................................................................3-39

Steps for Diagnostics.......................................................................................3-39

100 – 199, Primary Processor Test Error Codes .............................................3-40

200 – 299, Memory Test Error Codes.............................................................3-41

300 – 399, Keyboard Test Error Codes...........................................................3-42

400 – 499, Parallel Printer Test Error Codes...................................................3-42

500 – 599, Video Display Unit Test Error Codes............................................3-43

600 – 699, Diskette Drive Test Error Codes ...................................................3-44

800 – 899, Video Board Test Error Codes......................................................3-45

1100 – 1199, Serial Test Error Codes .............................................................3-45

1200 – 1299, Modem Communications Test Error Codes ..............................3-46

1700 – 1799, Hard Drive Test Error Codes.....................................................3-47

1900 – 1999, Tape Drive Test Error Codes.....................................................3-48

2400 – 2499, Advanced VGA Board Test Error Codes ..................................3-48

6500 – 6599, SCSI Hard Drive Test Error Codes ...........................................3-50

6600 – 6699, SCSI/IDE CD-ROM Drive Test Error Codes............................3-50

6700 – 6799, SCSI Tape Drive Test Error Codes ...........................................3-51

8600 – 8699, Pointing Device Interface Test Error Codes..............................3-51

Array Diagnostic Utility (ADU).............................................................................3-52

Starting the ADU.............................................................................................3-52

Integrated Management Log (IML)........................................................................3-63

Multiple Ways of Viewing the IML................................................................3-63

Event List ........................................................................................................3-65

Event Messages...............................................................................................3-65

Rapid Error Recovery.............................................................................................3-68

Automatic Server Recovery ............................................................................3-68

ASR Integrated Management Log (IML) Messages .......................................3-71

Storage Fault Recovery Tracking....................................................................3-73

Storage Automatic Reconstruction..................................................................3-73

Network Interface Fault Recovery Tracking...................................................3-73

Memory Fault Recovery Tracking ..................................................................3-73

ROMPaq Error Recovery Options..........................................................................3-74

ROMPaq Disaster Recovery ...........................................................................3-74

Compaq Insight Manager .......................................................................................3-76

Compaq Insight Management Software Features............................................3-76

Compaq Insight Management Software Architecture .....................................3-77

Chapter 4

Connectors, Switches, and LED Indicators

Connectors................................................................................................................4-1

System Board Components ...............................................................................4-2

Rear Panel Components ....................................................................................4-3

Server Feature Board Components....................................................................4-4

Switches ...................................................................................................................4-5

System Board Configuration Switchbank Settings ...........................................4-5

LED (Status) Indicators............................................................................................4-7

Power and Hard Drive Activity Indicators........................................................4-8

Integrated Network Controller Status Indicators...............................................4-9

Auxiliary Power Indicator...............................................................................4-10

Chapter 5

Physical and Operating Specifications

System Unit ..............................................................................................................5-2

Memory ....................................................................................................................5-3

1.44-MB Diskette Drive ...........................................................................................5-3

IDE CD-ROM Drive ................................................................................................5-4

Wide Ultra2 SCSI Hard Drives ................................................................................5-6

Compaq NC3163 Fast Ethernet Embedded NIC ......................................................5-8

Dual Channel Wide Ultra2 SCSI Adapter................................................................5-8

Contents v

Index

This maintenance and service guide is a troubleshooting guide that can be used for reference when servicing the Compaq ProLiant™ ML350 server.

Symbols in Text

About This Guide

WARNING: To reduce the risk of personal injury from electric shock and hazardous energy

levels, only authorized service technicians should attempt to repair this equipment. Improper repairs could create conditions that are hazardous.

These symbols may be found in the text of this guide. They have the following meanings.

WARNING: Text set off in this manner indicates that failure to follow directions in the warning could result in bodily harm or loss of life.

CAUTION: Text set off in this manner indicates that failure to follow directions could result in damage to equipment or loss of information.

IMPORTANT: Text set off in this manner presents clarifying information or specific instructions.

NOTE: Text set off in this manner presents commentary, sidelights, or interesting points of information.

viii Compaq ProLiant ML350 Maintenance and Service Guide

Compaq Technician Notes

WARNING: Only authorized technicians trained by Compaq should attempt to repair this

equipment. All troubleshooting and repair procedures are detailed to allow only subassembly/module-level repair. Because of the complexity of the individual boards and subassemblies, no one should attempt to make repairs at the component level or to make modifications to any printed wiring board. Improper repairs can create a safety hazard.

WARNING: To reduce the risk of electric shock or damage to the equipment:

■ If the system has multiple power supplies, disconnect power from the system by

unplugging all power cords from the power supplies.

■ Do not disable the power cord grounding plug. The grounding plug is an important safety

feature.

■ Plug the power cord into a grounded (earthed) electrical outlet that is easily accessible at

all times.

CAUTION: To properly ventilate the system, you must provide at least 30.5 cm (12 inches) of clearance at the front and back of the computer.

CAUTION: The computer is designed to be electrically grounded (earthed). To ensure proper operation, plug the AC power cord into a properly grounded AC outlet only.

NOTE: Any indications of component replacement or printed wiring board modifications may void any warranty.

Where to Go for Additional Help

In addition to this guide, the following information sources are available:

■ User documentation

■ Compaq Service Quick Reference Guide

■ Service training guides

■ Compaq service advisories and bulletins

■ Compaq QuickFind

■ Compaq Insight Manager

■ Compaq download facility: Call 281-518-1418

Integrated Management Log

The ProLiant ML350 server includes an integrated, nonvolatile management log that contains fault and management information. The contents of the Integrated Management Log (IML) can be viewed with Compaq Insight Manager or an IML Viewer for the supported operating system.

About This Guide ix

Telephone Numbers

For the name of your nearest Compaq authorized reseller:

■ In the United States, call 1-800-345-1518.

■ In Canada, call 1-800-263-5868.

For Compaq technical support:

■ In the United States and Canada, call 1-800-386-2172.

■ For Compaq technical support phone numbers outside the United States and Canada, visit

the Compaq website:

http://www.compaq.com

Chapter 1

Illustrated Parts Catalog

This chapter provides the illustrated parts breakdown and spare parts lists for the Compaq ProLiant™ ML350 server with Pentium III processor and a 133-MHz system bus. See Table 1-1 and Table 1-2 for the names of referenced spare parts.

1-2 Compaq ProLiant ML350 Maintenance and Service Guide

Mechanical Parts Exploded View

Figure 1-1. Mechanical parts exploded view

Mechanical Spare Parts List

Item Description Spare Part Number

Chassis

1 Chassis assembly 163358-001

2 Front bezel door 164274-001

3 Cover kit 163344-001

a) Hood panel

b) Access panel

c) Top panel

d) SCSI knockout cover *

Miscellaneous

4 Non-hot-plug hard drive cage ** 163349-001

Illustrated Parts Catalog 1-3

Table 1-1

Mechanical Spare Parts List

a) Drive cage

b) Drive bay cover

5 Hot-plug hard drive cage ** 159137-001

6 Hot-plug drive blank 122759-001

7 Removable media blank *** 163345-001

8 Expansion board retainer *** 163345-001

9 Feet *** 163345-001

* Not shown

** The ProLiant ML350 server features either a hot-plug hard drive cage or a non-hot-plug hard drive cage.

*** Part of the plastics spare kit.

1-4 Compaq ProLiant ML350 Maintenance and Service Guide

System Components Exploded View

Figure 1-2. System components exploded view

System Components Spare Parts List

Item Description Spare Part Number

System Components

10 System fan module 163347-001

Boards

11 System board 163357-001

12 Server Feature Board (expansion board) 163355-001

Mass Storage Devices

13 CD-ROM drive

■ 32X IDE CD-ROM drive

■ 40X IDE CD-ROM drive *

14 Diskette drive 158601-001

Illustrated Parts Catalog 1-5

Table 1-2

163354-001

179963-001

15 Hot-plug hard drive cage ** 159137-001

15a 4-slot SCSI drive cage simplex backplane board* 387090-001

16 9.1-GB Wide Ultra2 SCSI hot-plug hard drive 122759-001

17 Non-hot-plug hard drive cage ** 163349-001

18 9.1-GB Wide Ultra2 SCSI non-hot-plug hard drive ** 349534-001

19 Hot-plug drive blank * ** 104665-001

Power

20 Power switch assembly 163350-001

21 300 W PFC power supply 163346-001

22 Processor Power Module 157825-001

23 Processor terminator module 158271-001

Options

24 Pentium III processor 600/133 EB with heatsink 166146-001

25 Pentium III processor 667/133 with heatsink * 166145-001

26 Pentium III processor 733/133 with heatsink * 164272-001

27 Pentium III processor 800/133 with heatsink * 187781-001

28 Pentium III processor 866/133 with heatsink * 187782-001

29 Pentium III processor 933/133 with heatsink * 196628-001

30 CR2032 lithium battery for system board and Server Feature Board 234556-001

* Not shown

** Also referenced in Figure 1-1 and Table 1-1

continued

1-6 Compaq ProLiant ML350 Maintenance and Service Guide

Table 1-2 System Components Spare Parts List

Item Description Spare Part Number

continued

Options continued

31 512-MB PC 133-MHz ECC Registered SDRAM DIMM * 159227-001

32 256-MB PC 133-MHz ECC Registered SDRAM DIMM * 159304-001

33 128-MB PC 133-MHz ECC Registered SDRAM DIMM 159226-001

34 64-MB PC 133-MHz ECC Registered SDRAM DIMM * 159225-001

Miscellaneous

35 Enhanced keyboard * 386209-001

36 Signal cable kit * 163353-001

a) IDE ribbon cable assembly

b) Diskette drive cable assembly

c) SMIC cable assembly

d) Removable media device SCSI cable

37 SCSI LVD cable * 163351-001

38 Miscellaneous plastics kit * 163345-001

a) PCI retainer

b) Foot, plastic, chassis

c) Removable media blank

d) 5.25-inch drive bay bezel

e) Retainer clips

f) Expansion board retainer

39 Tower-to-rack conversion kit * 164277-001

a) Front plate, rack

b) Mounting hardware kit

c) Non-hot-plug drive cage door

40 Return kit * 164270-001

41 Country kit * 164271-001

42 Maintenance and service guide * 164275-001

43 Illustrated parts map * 164276-001

* Not shown

** Also referenced in Figure 1-1 and Table 1-1

Chapter 2

Removal and Replacement Procedures

This chapter provides subassembly/module-level removal and replacement procedures for the ProLiant ML350 server. Run the diagnostics program to verify that all components operate properly.

To service the ProLiant ML350 server, you might need the following:

■ Torx T-15 screwdriver

■ From the Compaq SmartStart and Support Software CD:

❑ Array Diagnostics Utility (ADU)

❑ Diagnostics software

2-2 Compaq ProLiant ML350 Maintenance and Service Guide

Electrostatic Discharge Information

A discharge of static electricity can damage static-sensitive devices or microcircuitry. Proper packaging and grounding techniques are necessary precautions to prevent damage. To prevent electrostatic damage, observe the following precautions:

■ Transport products in static-safe containers such as conductive tubes, bags, or boxes.

■ Keep electrostatic-sensitive parts in their containers until they arrive at static-free stations.

■ Cover workstations with approved static-dissipating material. Provide a wrist strap

connected to the work surface and properly grounded (earthed) tools and equipment.

■ Keep work area free of nonconductive materials, such as ordinary plastic assembly aids

and foam packing.

■ Make sure you are always properly grounded (earthed) when touching a static-sensitive

component or assembly.

■ Avoid touching pins, leads, or circuitry.

■ Always place drives with the PCB-assembly-side down.

■ Use conductive field service tools.

Symbols on Equipment

The following symbols may be placed on equipment to indicate the presence of potentially hazardous conditions:

This symbol in conjunction with any of the following symbols indicates the presence of a potential hazard. The potential for injury exists if warnings are not observed. Consult your documentation for specific details.

This symbol indicates the presence of hazardous energy circuits or electric shock hazards. Refer all servicing to qualified personnel.

WARNING: To reduce the risk of injury from electric shock hazards, do not open this enclosure. Refer all maintenance, upgrades, and servicing to qualified personnel.

This symbol indicates the presence of electric shock hazards. The area contains no user or field serviceable parts. Do not open for any reason.

WARNING: To reduce the risk of injury from electric shock hazards, do not open this enclosure.

This symbol on an RJ-45 receptacle indicates a Network Interface Connection.

WARNING: To reduce the risk of electric shock, fire, or damage to the equipment, do not plug telephone or telecommunications connectors into this receptacle.

Removal and Replacement Procedures 2-3

This symbol indicates the presence of a hot surface or hot component. If this surface is contacted, the potential for injury exists.

WARNING: To reduce the risk of injury from a hot component, allow the surface to cool before touching.

These symbols on power supplies or systems indicate the equipment is supplied by multiple sources of power.

WARNING: To reduce the risk of injury from electric shock, remove all power cords to completely disconnect power from the system.

This symbol indicates that the component exceeds the recommended weight

Weight in kg

Weight in lb

for one individual to handle safely.

WARNING: To reduce the risk of personal injury or damage to the equipment, observe local occupational health and safety requirements and guidelines for manual material handling.

CLASS 1 LASER PRODUCT

WARNING: This label or equivalent is located on the surface of the CD-ROM drive. This label indicates that the product is classified as a CLASS LASER PRODUCT.

2-4 Compaq ProLiant ML350 Maintenance and Service Guide

Preparation Procedures

WARNING: Only authorized technicians trained by Compaq should attempt to repair this

equipment. Because of the complexity of the individual boards and subassemblies, no one should attempt to make repairs at the component level or to make modifications to any printed wiring board. Improper repairs can create a safety hazard.

CAUTION: Electrostatic discharge can damage electronic components. Be sure you are properly grounded (earthed) before beginning any installation procedure. See “Electrostatic Discharge” earlier in this chapter for more information.

Before beginning any removal and replacement procedure for non-hot-plug devices:

1. Power down the ProLiant ML350 server and any peripheral devices.

2. Disconnect the AC power cord from the AC outlet, and then disconnect from the server.

3. Disconnect all external peripheral devices from the server.

NOTE: If you have installed a rack upgrade kit, you must remove the ProLiant ML350 server from the rack and place it on a sturdy table or workbench. Refer to the Compaq ProLiant ML350 Setup and Installation Guide for instructions.

Rack Warnings

WARNING: To reduce the risk of personal injury or damage to the equipment:

■ Always load the heaviest item first, and load the rack from the bottom up. This step makes

the rack “bottom-heavy” and helps prevent the rack from becoming unstable.

■ The bottom stabilizers on the equipment must be fully extended. Be sure that the

equipment is properly supported/braced when installing options and cards.

■ Extend only one component at a time. A rack may become unstable if more than one

component is extended for any reason. Be sure that the rack is adequately stabilized before extending a component outside the rack.

■ Before beginning work on the rack, be sure that the leveling jacks are extended to the

floor, that the full weight of the rack rests on the level floor, and that either stabilizers are installed or multiple racks are coupled for stability.

■ Because the rack allows you to stack computer components on a vertical rather than

horizontal plane, you must take precautions to provide for rack stability and safety and to protect both personnel and property. Heed all cautions and warnings in the installation instructions that come with the server.

■ Tipping can cause injury or death.

WARNING: To reduce the risk of personal injury, fire, or damage to the equipment, do not overload the AC supply branch circuit that provides power to the rack.

Server Warnings and Precautions

WARNING: To reduce the risk of personal injury from hot surfaces, allow the internal system

components to cool before touching them.

CAUTION: Protect the server from power fluctuations and temporary interruptions with a regulating uninterruptible power supply (UPS). This device protects the hardware from damage caused by power surges and voltage spikes and keeps the system in operation during a power failure.

CAUTION: The server must always be operated with system unit covers on. Proper cooling is not achieved if the system unit covers are removed.

Removal and Replacement Procedures 2-5

2-6 Compaq ProLiant ML350 Maintenance and Service Guide

Front Bezel Door

CAUTION: Before removing the front bezel door, make sure that the server is powered down,

all cables are disconnected from the back of the server, and the power cord is disconnected from the grounded (earthed) AC outlet.

To remove the front bezel door:

1. Complete the preparation procedures. See “Preparation Procedures” earlier in this chapter.

2. If the keylock is locked, unlock using the included key (1).

3. Open the front bezel door fully to the right (2).

4. Lift the bezel door upward (3), and then away from the chassis.

Figure 2-1. Removing the front bezel door

Reverse steps 1 through 4 to replace the front bezel door.

NOTE: When replacing the front bezel door, ensure that the bottom hinge points are properly placed in the chassis before rotating the front bezel door back into its original position.

Access Panel

To remove the access panel:

1. Complete the preparation procedures. See “Preparation Procedures” earlier in this chapter.

2. Open the front bezel door. See “Front Bezel Door” earlier in this chapter.

3. Loosen the two thumbscrews (1) located on the front of the access panel.

4. Slide back the access panel (2) approximately 2.5 cm (1 inch). Then remove the panel.

Removal and Replacement Procedures 2-7

WARNING: To reduce the risk of personal injury from hot surfaces, allow the internal system components to cool before touching them.

CAUTION: Before removing the access panel, make sure that the server is powered down, all cables are disconnected from the back of the server, and the power cord is disconnected from the grounded (earthed) AC outlet.

CAUTION: Do not operate the server with the large access panel removed. This panel is an integral part of the cooling system and removing it while the system is running may cause overheating and subsequent server shutdown.

Figure 2-2. Removing the access panel

Reverse steps 1 through 4 to replace the access panel.

2-8 Compaq ProLiant ML350 Maintenance and Service Guide

Removable Media Blank

NOTE: The removable media blank must be removed from an available removable media bay to install a

storage device for the first time.

To remove a removable media blank from the front bezel:

1. Complete the preparation procedures. See “Preparation Procedures” earlier in this chapter.

2. Remove the front bezel door. See “Front Bezel Door” earlier in this chapter.

3. Remove the access panel. See “Access Panel” earlier in this chapter.

4. While pushing up on the drivelock (1), push on the rear of the removable media blank assembly.

5. Gently remove the removable media blank (2).

Figure 2-3. Removing the media blank

Reverse steps 1 through 5 to replace the removable media blank.

Cable Routing Diagrams

Figure 2-4. 1.44-MB diskette drive cable (1)

Removal and Replacement Procedures 2-9

Figure 2-5. IDE CD-ROM drive cable (1)

2-10 Compaq ProLiant ML350 Maintenance and Service Guide

Figure 2-6. Four-device SCSI cable (1) and power cable (2)

Figure 2-7. Server Management Information Cable (SMIC) (1)

System Fan Module

Figure 2-8. System fan module location

Removal and Replacement Procedures 2-11

Item Description

1 System fan module

Table 2-1

System Fan Location

2-12 Compaq ProLiant ML350 Maintenance and Service Guide

To remove the system fan module:

1. Complete the preparation procedures. See “Preparation Procedures” earlier in this chapter.

2. Remove the access panel. See “Access Panel” earlier in this chapter.

3. Disconnect the fan cable (1) from the system board.

Figure 2-9. Disconnecting the system fan module cable

Removal and Replacement Procedures 2-13

4. Loosen the thumbscrew (2) securing the fan module to the chassis.

5. Rotate the fan module (3) counterclockwise, then remove the system fan module from the chassis.

Figure 2-10. Removing the system fan module

Reverse steps 1 through 5 to replace the system fan module.

2-14 Compaq ProLiant ML350 Maintenance and Service Guide

Drive Bay Configuration

The ProLiant ML350 server supports a maximum of eight internal drive bays (four are removable media drives, four are hard drives). Figure 2-11 and Table 2-2 show the drive bay configurations.

Figure 2-11. ProLiant ML350 server drive bay configurations

Table 2-2

Drive Bay Configurations

Item A: Non-Hot-Plug Configuration B: Hot-Plug Configuration

1 Empty removable media bays Empty removable media bays

2 IDE CD-ROM drive IDE CD-ROM drive

3 1.44-MB diskette drive 1.44-MB diskette drive

4 Non-hot-plug hard drive bays Hot-plug hard drive bays

NOTE: The removable media drive bays can be occupied by any half-height device, such as a 12/24 DAT tape drive.

Non-Hot-Plug Hard Drive

To remove the non-hot-plug hard drive:

1. Complete the preparation procedures. See “Preparation Procedures” earlier in this chapter.

2. Remove the front bezel door. See “Front Bezel Door” earlier in this chapter.

3. Remove the access panel. See “Access Panel” earlier in this chapter.

4. Disconnect the data cables (1) and power cables (2) from the back of the drive.

Removal and Replacement Procedures 2-15

Figure 2-12. Disconnecting the non-hot-plug hard drive cables

2-16 Compaq ProLiant ML350 Maintenance and Service Guide

5. For systems equipped with a drive bay cover, loosen the thumbscrews (1), then remove the drive bay cover (2).

Figure 2-13. Removing the drive bay cover from a non-hot-plug hard drive cage

6. While pushing in on the drivelock (1), pull the drive (2) out of the drive bay.

Figure 2-14. Removing a non-hot-plug hard drive

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