HP ProLiant ML370 Generation 4 Reference and Troubleshooting Guide
HP ProLiant ML370 Generation 4 Server
Reference and Troubleshooting Guide
May 2005 (Second Edition)
Part Number 346896-002
© Copyright 2004, 2005 Hewlett-Packard Development Company, L.P.
The information contained herein is subject to change without notice. The only warranties for HP products
and services are set forth in the express limited warranty statements accompanying such products and
services. Nothing herein should be construed as constituting an additional warranty. HP shall not be liable
for technical or editorial errors or omissions contained herein.
Microsoft, Windows, and Windows NT are US registered trademarks of Microsoft Corporation.
Linux is a U.S. registered trademark of Linus Torvalds.
HP ProLiant ML370 Generation 4 Server Reference and Troubleshooting Guide
May 2005 (Second Edition)
Part Number 346896-002
Audience assumptions
This document is for the person who installs, administers, and troubleshoots servers and storage
systems. HP assumes you are qualified in the servicing of computer equipment and trained in
recognizing hazards in products with hazardous energy levels.
3
Contents
Server component identification 9
Front panel components....................................................................................................................... 9
Front panel LEDs and buttons............................................................................................................10
Rear panel components...................................................................................................................... 12
Rear panel LEDs and buttons.............................................................................................................13
System board components .................................................................................................................14
System maintenance switch....................................................................................................15
DIMM slots.............................................................................................................................17
System board LEDs ...........................................................................................................................18
Power supply backplane LED............................................................................................................ 19
System LEDs and internal health LED combinations........................................................................ 19
SCSI IDs and SAS-SATA device numbers........................................................................................21
SCSI configurations........................................................................................................................... 22
Hot-plug SCSI hard drive LEDs........................................................................................................ 22
Hot-plug SCSI hard drive LED combinations ................................................................................... 23
SATA or SAS hard drive LEDs.........................................................................................................24
SAS and SATA hard drive LED combinations..................................................................................25
Identifying redundant hot-plug fans...................................................................................................26
Server operations 27
Powering up the server.......................................................................................................................27
Powering down the server.................................................................................................................. 27
Extending the server from the rack.................................................................................................... 28
Unlocking the front tower bezel.........................................................................................................29
Removing the access panel ................................................................................................................30
Server setup 31
Optional installation services.............................................................................................................31
Rack planning resources ....................................................................................................................32
Optimum environment....................................................................................................................... 33
Space and airflow requirements..............................................................................................33
Temperature requirements......................................................................................................34
Power requirements................................................................................................................ 35
Electrical grounding requirements..........................................................................................36
Rack warnings and cautions............................................................................................................... 36
Identifying rack server shipping carton contents ...............................................................................39
Identifying tower server shipping carton contents............................................................................. 39
4 HP ProLiant ML370 Generation 4 Server Reference and Troubleshooting Guide
Installing hardware options................................................................................................................40
Setting up a tower server....................................................................................................................40
Installing the server into the rack.......................................................................................................42
Powering up and configuring the server ............................................................................................50
Installing the operating system...........................................................................................................50
Registering the server.........................................................................................................................51
Hardware options installation 53
Introduction........................................................................................................................................ 53
Processor options ............................................................................................................................... 54
Memory options................................................................................................................................. 58
Online spare memory configuration .......................................................................................58
DIMM installation guidelines................................................................................................. 59
Installing DIMMs ...................................................................................................................59
Hot-plug SCSI hard drive options......................................................................................................60
Removing a hot-plug SCSI hard drive....................................................................................60
Installing a hot-plug SCSI hard drive .....................................................................................61
SAS-SATA hard drive cage............................................................................................................... 62
Removing the hard drive cage ................................................................................................62
Installing the SAS-SATA hard drive cage.............................................................................. 64
Removable media devices.................................................................................................................. 67
Accessing the removable media cage..................................................................................... 68
Installing a half-height or full-height media device................................................................ 70
Installing an optional internal two-bay hot-plug SCSI drive cage..........................................73
Redundant hot-plug fans....................................................................................................................75
Redundant hot-plug fan cage option.......................................................................................76
Installing hot-plug fans........................................................................................................... 78
Replacing hot-plug fans..........................................................................................................80
Redundant hot-plug power supply .....................................................................................................80
Expansion boards............................................................................................................................... 82
Performance balancing ...........................................................................................................83
Removing the expansion slot cover........................................................................................83
Installing expansion boards ....................................................................................................84
Remote Insight Lights-Out Edition II board......................................................................................86
VHDCI or HD68 SCSI cable option..................................................................................................87
Duplex SCSI board option .................................................................................................................89
Tower-to-rack conversion option....................................................................................................... 90
Converting a tower server to a rack server .............................................................................90
Installing the rack server.........................................................................................................97
Accessing the server in the rack ............................................................................................. 97
Server cabling 99
Storage device cabling guidelines......................................................................................................99
Hot-plug SCSI cabling.......................................................................................................................99
Contents 5
Integrated simplex SCSI cabling ..........................................................................................100
Integrated duplex SCSI cabling............................................................................................ 101
Array controller simplex SCSI cabling................................................................................. 102
Array controller duplex SCSI cabling ..................................................................................102
Integrated SCSI cabling with optional internal two-bay hot-plug SCSI drive cage..............104
Array controller SCSI cabling with optional internal two-bay hot-plug SCSI drive cage....105
Cable connector identification ......................................................................................................... 106
CD-ROM drive cabling....................................................................................................................107
RILOE II cabling .............................................................................................................................107
Diskette drive cabling ......................................................................................................................108
External storage cabling...................................................................................................................109
Server configuration and utilities 111
Configuration tools ..........................................................................................................................111
SmartStart software ..............................................................................................................111
HP ROM-Based Setup Utility ..............................................................................................113
Array Configuration Utility ..................................................................................................115
Option ROM configuration for arrays ..................................................................................115
Option ROM configuration for arrays ..................................................................................116
Auto-configuration process ..................................................................................................117
HP ProLiant Essentials Rapid Deployment Pack .................................................................118
Re-entering the server serial number and product ID........................................................... 118
Management tools............................................................................................................................119
Automatic server recovery....................................................................................................119
ROMPaq utility.....................................................................................................................119
System Online ROM flash component utility.......................................................................120
Integrated Lights-Out technology.........................................................................................120
StorageWorks library and tape tools..................................................................................... 122
Management agents.............................................................................................................. 122
HP Systems Insight Manager................................................................................................123
Redundant ROM support......................................................................................................123
USB support .........................................................................................................................124
Diagnostic tools ...............................................................................................................................125
Survey Utility .......................................................................................................................125
Array Diagnostic Utility .......................................................................................................126
HP Insight Diagnostics .........................................................................................................126
Integrated management log...................................................................................................126
Keeping the system current.............................................................................................................. 127
Drivers.................................................................................................................................. 127
Resource Paqs....................................................................................................................... 128
ProLiant Support Packs ........................................................................................................ 128
ActiveUpdate........................................................................................................................ 128
Operating system version support.........................................................................................128
6 HP ProLiant ML370 Generation 4 Server Reference and Troubleshooting Guide
Change control and proactive notification............................................................................ 129
Natural language search assistant .........................................................................................129
Care Pack.............................................................................................................................. 129
Troubleshooting 131
Server diagnostic steps..................................................................................................................... 131
Important safety information ................................................................................................131
Preparing the server for diagnosis ........................................................................................135
Symptom information...........................................................................................................136
Diagnostic steps.................................................................................................................... 137
Procedures for all ProLiant servers..................................................................................................151
Hardware problems...............................................................................................................151
Software problems................................................................................................................177
Contacting HP.......................................................................................................................186
Error messages................................................................................................................................. 192
ADU error messages.............................................................................................................192
POST error messages and beep codes ..................................................................................225
Event list error messages ......................................................................................................278
HP BladeSystem infrastructure error codes.......................................................................... 283
Battery replacement 293
Regulatory compliance notices 295
Regulatory compliance identification numbers................................................................................295
Federal Communications Commission notice..................................................................................296
FCC rating label....................................................................................................................296
Class A equipment................................................................................................................ 296
Class B equipment................................................................................................................ 297
Declaration of conformity for products marked with the FCC logo, United States only.................297
Modifications ...................................................................................................................................298
Cables...............................................................................................................................................298
Mouse compliance statement........................................................................................................... 298
Canadian notice (Avis Canadien).....................................................................................................298
European Union Notice.................................................................................................................... 299
Japanese notice.................................................................................................................................300
BSMI notice..................................................................................................................................... 300
Laser compliance .............................................................................................................................300
Battery replacement notice...............................................................................................................301
Taiwan battery recycling notice....................................................................................................... 302
Power cord statement for Japan ....................................................................................................... 302
Electrostatic discharge 303
Preventing electrostatic discharge.................................................................................................... 303
Grounding methods to prevent electrostatic discharge ....................................................................304
Contents 7
Server specifications 305
Server specifications ........................................................................................................................305
Environmental specifications........................................................................................................... 305
Technical support 307
Related documents........................................................................................................................... 307
HP contact information.................................................................................................................... 307
Before you contact HP..................................................................................................................... 308
Customer self repair......................................................................................................................... 308
Acronyms and abbreviations 309
Index 313
9
Server component identification
In this section
Front panel components..................................................................................................................9
Front panel LEDs and buttons......................................................................................................10
Rear panel components.................................................................................................................12
Rear panel LEDs and buttons .......................................................................................................13
System board components............................................................................................................14
System board LEDs......................................................................................................................18
Power supply backplane LED ......................................................................................................19
System LEDs and internal health LED combinations ..................................................................19
SCSI IDs and SAS-SATA device numbers..................................................................................21
Hot-plug SCSI hard drive LEDs...................................................................................................22
Hot-plug SCSI hard drive LED combinations..............................................................................23
SATA or SAS hard drive LEDs ...................................................................................................24
SAS and SATA hard drive LED combinations ............................................................................25
Identifying redundant hot-plug fans .............................................................................................26
Front panel components
10 HP ProLiant ML370 Generation 4 Server Reference and Troubleshooting Guide
Item Description
1 UID switch and LED
2 Internal system health LED
3 Front panel USB port
4 External system health LED
5 NIC link/activity LED
6 Power on/Standby button/LED assembly
7 Diskette drive*
8 Removable media bays
9 Hot-plug SCSI hard drive bays (SCSI IDs 0 through 5)
10 Optional SAS-SATA hard drive bays (1 through 8)
* Open the media door on the rack server to access the diskette drive.
Front panel LEDs and buttons
Server component identification 11
Item Description Status
1 UID switch and LED Blue = Activated
Flashing blue = System being managed remotely
Off = Deactivated
2 Internal system health
LED
3 External system health
(power supply) LED
4 NIC link/activity LED
(embedded NIC only)
5 Power on/Standby button
and LED
Green = Normal (system on)
Amber = System health is degraded
Red = System health is critical
Off = Normal (system off)
Green = Normal (system on)
Amber = Redundant power supply failure
Red = Power supply failure. No operational power supplies.
Off = Normal (system off)
Green = Linked to network
Flashing green = Linked with activity on the network
Off = No network connection
Amber = System has AC power and is in standby mode
Green = System has AC power and is turned on
Off = System has no AC power
12 HP ProLiant ML370 Generation 4 Server Reference and Troubleshooting Guide
Rear panel components
Item Description Item Description
1 x4 PCI Express expansion slots 9 Auxillary VHDCI SCSI blank
2 100-MHz PCI-X expansion slots 10 Mouse connector
3 Unit ID LED 11 Keyboard connector
4 Ethernet 10/100/1000 port 12 Serial connector B
5 iLO management port 13 Serial connector A
6 Parallel connector 14 USB connectors
7 Video connector 15 Primary hot-plug power supply
8 T-15 Torx screwdriver 16 Redundant hot-plug power supply
Server component identification 13
Rear panel LEDs and buttons
Item Description LED Color Status
1 Unit ID LED Blue On = Activated
Flashing = System remotely managed
Off = Deactivated
2 NIC Activity LED
(Integrated NC7781)
3 NIC Link LED
(Integrated NC7781)
4 iLO NIC Activity LED Green On or flashing = Network activity
5 iLO NIC Link LED Green On = Linked to network
Green On or flashing = Linked to network
Off = Not linked to network
Green On = Network activity
Off = No network activity
Off = No network activity
Off = Not linked to network
14 HP ProLiant ML370 Generation 4 Server Reference and Troubleshooting Guide
Item Description LED Color Status
6 Power supply LED
Green On = Power turned on and power supply
(redundant)
7 Power Supply LED
Green On = Power turned on and power supply
(primary)
System board components
functioning properly
Off = One or more of the following conditions
exists:
•
AC power unavailable
•
Power supply failed
•
Power supply in standby mode
•
Power supply exceeded current limit
functioning properly
Off = One or more of the following conditions
exists:
•
AC power unavailable
•
Power supply failed
•
Power supply in standby mode
•
Power supply exceeded current limit
Server component identification 15
Item Description Item Description
1 Redundant fan 2 connector 13 Power supply connector
2 System maintenance switch 14 SCSI port 1
3 System battery 15 PPM socket 2
4 Redundant fan 4 connector 16 PPM socket 1 (populated)
5 64-bit/100-MHz PCI-X slot,
17 SCSI port 2
bus 3
6 64-bit/100-MHz PCI-X slot,
18 Fan cable connector
bus 3
7 64-bit/100-MHz PCI-X slot,
19 Diskette drive connector
bus 7
8 64-bit/100-MHz PCI-X slot,
20 IDE connector
bus 7
9 PCI Express x4 slot, bus
21 DIMM slots
11 *
10 PCI Express x4 slot, bus
22 Processor 1
14 *
11 RILOE II connector (install
23 Processor 2
adapter into slot 1) **
12 Power supply signal
connector
* x8 PCI Express cards are supported, but will run at x4 speeds.
** The server comes with iLO remote management capability embedded on the system
board. The 30-pin remote management connector for the RILOE II board is provided if the
server environment requires an upgrade for improved Remote Console performance.
System maintenance switch
The system maintenance switch (SW1) is a six-position switch that is used for
system configuration. The default position for all six positions is Off.
16 HP ProLiant ML370 Generation 4 Server Reference and Troubleshooting Guide
Position Description Function
S1 iLO Security Off = iLO security is enabled
On = iLO security is disabled
S2 Configuration
lock
Off = System configuration can
be changed
On = System configuration is
locked
S3 Reserved Reserved
S4 Reserved Reserved
S5 Password
protection
override
Off = No function
On = Clears power-on
password and administrator
password
S6 Invalidate
configuration
Off = Normal
On = ROM treats system
configuration as invalid
When the system maintenance switch position 6 is set to the On position, the
system is prepared to erase all system configuration settings from both CMOS
and NVRAM.
CAUTION: Clearing CMOS and/or NVRAM deletes
configuration information. Be sure to properly configure the server or
data loss could occur.
Server component identification 17
DIMM slots
DIMM slots are numbered sequentially (1 through 8) and the paired banks are
identified by the letters A, B, C, and D.
Item Description
1 DIMM slot 1A
2 DIMM slot 2A
3 DIMM slot 3B
4 DIMM slot 4B
5 DIMM slot 5C
6 DIMM slot 6C
7 DIMM slot 7D
8 DIMM slot 8D
18 HP ProLiant ML370 Generation 4 Server Reference and Troubleshooting Guide
System board LEDs
Item LED Description Status
1 Processor error Off = Normal
Amber = Processor failed or missing
2 System temperature
alert
Off = Normal
Amber = System temperature has exceeded
OS cautionary level
3 PPM error Off = Normal
Amber = PPM failed or missing
4 Memory mode LED Off = Normal
Green = System is in online spare memory
mode
5 Online spare memory
failover LED
Off = Normal
Amber = Online spare memory is in use due
to memory failover
6 Memory status Off = Normal
Amber = Memory failed or configuration
problem
Server component identification 19
Power supply backplane LED
If the power supply backplane LED is illuminated, then the power supply
backplane must be replaced.
System LEDs and internal health LED combinations
When the internal health LED on the front panel illuminates either amber or red,
the server is experiencing a health event. Combinations of illuminated system
LEDs and the internal health LED indicate system status.
NOTE: The system management driver must be installed in order for
the internal health LED to provide pre-failure and warranty conditions.
The front panel health LEDs indicate only the current hardware status. In some
situations, HP SIM may report server status differently than the health LEDs
because the software tracks more system attributes.
20 HP ProLiant ML370 Generation 4 Server Reference and Troubleshooting Guide
System LED and
Color
Internal Health
LED Color
Status
Processor failure,
socket X (Amber)
Red One or more of the following conditions may exist:
•
Processor in socket X has failed.
•
Processor X is not installed in the socket.
•
ROM detected a failed processor during POST.
Amber Processor in socket X is in a pre-failure condition.
PPM failure, slot X
(Amber)
Red • • PPM in slot X has failed.
PPM is not installed in slot X, but the corresponding
processor is installed.
DIMM failure, slot X
(Amber)
Red • • DIMM in slot X has failed.
DIMM has experienced a multi-bit error.
Amber • • DIMM in slot X has reached single-bit correctable
error threshold.
DIMM in slot X is in a pre-failure condition.
DIMM bank error (all
slots in one bank,
Red The bank is not populated entirely or DIMMs do not all
match within the bank.
Amber)
DIMM failure (all
slots, Amber)
System temperature
alert (Amber)
Red • • No valid or usable memory is installed in the system.
The banks are not populated in the correct order.
Red System temperature has exceeded OS cautionary level
or critical hardware level.
Fan (Amber) Red A required fan has failed.
Power supply
Amber A redundant fan has failed.
Red The power supply backplane has failed.
backplane failure
(Amber)
Server component identification 21
SCSI IDs and SAS-SATA device numbers
The server supports single- or dual-channel SCSI hard drive configurations. The
single-channel configuration (simplex) supports up to six hard drives on SCSI
channel 1. The dual-channel configuration (duplex) supports two hard drives on
SCSI channel 2 (SCSI IDs 4 and 5), and up to four hard drives on SCSI channel
1 (SCSI IDs 0 through 3).
The server supports a combination of up to eight SAS and SATA hard drives in
the optional SAS-SATA hard drive cage. SAS-SATA devices are numbered 1
through 8.
The SCSI IDs for both simplex and duplex configurations, as well as SAS-SATA
device numbers, are illustrated. HP recommends populating hard drive bays
starting with the lowest SCSI ID or device number.
Item Description
1 SCSI hard drive cage (SCSI IDs 0
through 5)
2 SAS-SATA hard drive cage (Device
numbers 1 through 8)
22 HP ProLiant ML370 Generation 4 Server Reference and Troubleshooting Guide
SCSI configurations
NOTE: These SCSI ID designations apply regardless of the controller
or the configuration used.
NOTE: The standard cabling configuration for the server is simplex.
Duplex is an option requiring the duplex kit. Refer to "Server Cabling
(on page 99
Configuration Channel 1 Channel 2
)" for cabling information.
Simplex SCSI IDs 0, 1, 2, 3,
4, 5
Duplex SCSI IDs 0, 1, 2, 3 SCSI IDs 4, 5
IMPORTANT: After changing any SCSI configuration, be sure the
proper boot controller order is set in RBSU.
Unused
Hot-plug SCSI hard drive LEDs
Item LED Description Status
1 Activity status On = Drive activity
Flashing = High activity on the drive or drive
is being configured as part of an array.
Off = No drive activity
Server component identification 23
Item LED Description Status
2 Online status On = Drive is part of an array and is
currently working.
Flashing = Drive is actively online.
Off = Drive is offline.
3 Fault status On = Drive failure
Flashing = Fault-process activity
Off = No fault-process activity
Hot-plug SCSI hard drive LED combinations
Activity
LED (1)
Online
LED (2)
Fault LED
(3)
Interpretation
On, off, or
flashing
On, off, or
flashing
On or off Flashing A predictive failure alert has been received for this drive.
Replace the drive as soon as possible.
On Off The drive is online and is configured as part of an array.
If the array is configured for fault tolerance and all other drives in the
array are online, and a predictive failure alert is received or a drive
capacity upgrade is in progress, you may replace the drive online.
On or
flashing
Flashing Off
Do not remove the drive. Removing a drive may terminate the
current operation and cause data loss.
The drive is rebuilding or undergoing capacity expansion.
On Off Off
Do not remove the drive.
The drive is being accessed, but (1) it is not configured as part of an
array; (2) it is a replacement drive and rebuild has not yet started; or
(3) it is spinning up during the POST sequence.
Flashing Flashing Flashing
Do not remove the drive. Removing a drive may cause data loss
in non-fault-tolerant configurations.
Either (1) the drive is part of an array being selected by an array
configuration utility; (2) Drive Identification has been selected in
HP SIM; or (3) drive firmware is being updated.
Off Off On The drive has failed and has been placed offline.
You may replace the drive.
24 HP ProLiant ML370 Generation 4 Server Reference and Troubleshooting Guide
Activity
LED (1)
Online
LED (2)
Fault LED
(3)
Interpretation
Off Off Off Either (1) the drive is not configured as part of an array; (2) the drive
is configured as part of an array, but it is a replacement drive that is
not being accessed or being rebuilt yet; or (3) the drive is configured
as an online spare.
If the drive is connected to an array controller, you may replace the
drive online.
SATA or SAS hard drive LEDs
Item LED Description Status
1 Online/Activity status Green = Drive activity
Flashing green = High activity on the
drive or drive is being configured as part
of an array
Off = No drive activity
2 Fault/UID status Amber = Drive failure
Flashing amber = Fault-process activity
Blue = Unit identification is active
Off = No fault-process activity
Server component identification 25
SAS and SATA hard drive LED combinations
Online/Activity
LED (green)
Fault/UID LED
(amber/blue)
Interpretation
On, off, or
flashing
Alternating amber
and blue
The drive has failed, or a predictive failure alert has been
received for this drive; it also has been selected by a
management application.
On, off, or
flashing
On Amber, flashing
Steadily blue The drive is operating normally, and it has been selected by a
management application.
A predictive failure alert has been received for this drive.
regularly (1 Hz)
Replace the drive as soon as possible.
On Off The drive is online, but it is not active currently.
Flashing
regularly (1 Hz)
Amber, flashing
regularly (1 Hz)
Do not remove the drive. Removing a drive may terminate
the current operation and cause data loss.
The drive is part of an array that is undergoing capacity
expansion or stripe migration, but a predictive failure alert has
been received for this drive. To minimize the risk of data loss, do
not replace the drive until the expansion or migration is complete.
Flashing
regularly (1 Hz)
Off
Do not remove the drive. Removing a drive may terminate
the current operation and cause data loss.
The drive is rebuilding, or it is part of an array that is undergoing
capacity expansion or stripe migration.
Flashing
irregularly
Flashing
Amber, flashing
regularly (1 Hz)
The drive is active, but a predictive failure alert has been received
for this drive. Replace the drive as soon as possible.
Off The drive is active, and it is operating normally.
irregularly
Off Steadily amber A critical fault condition has been identified for this drive, and the
controller has placed it offline. Replace the drive as soon as
possible.
Off Amber, flashing
regularly (1 Hz)
A predictive failure alert has been received for this drive. Replace
the drive as soon as possible.
Off Off The drive is offline, a spare, or not configured as part of an array.
26 HP ProLiant ML370 Generation 4 Server Reference and Troubleshooting Guide
Identifying redundant hot-plug fans
NOTE: Fan locations are located in the chassis.
Item Description Configuration
1 Fan 1 Primary
2 Fan 2 Redundant
3 Fan 3 Primary
4 Fan 4 Redundant
5 Fan 5 Primary
6 Fan 6 Redundant
Fan failures are indicated by amber LEDs located on each hot-plug fan and by
the front panel internal health LED. When a fan failure occurs, the internal health
LED illuminates red in non-redundant mode and amber in redundant mode.
27
Server operations
In this section
Powering up the server .................................................................................................................27
Powering down the server ............................................................................................................27
Extending the server from the rack...............................................................................................28
Unlocking the front tower bezel ...................................................................................................29
Removing the access panel...........................................................................................................30
Powering up the server
Powering down the server
To power up the server, press the Power On/Standby button.
WARNING: To reduce the risk of personal injury, electric
shock, or damage to the equipment, remove the power cord to
remove power from the server. The front panel Power On/Standby
button does not completely shut off system power. Portions of the
power supply and some internal circuitry remain active until AC
power is removed.
IMPORTANT: If installing a hot-plug device, it is not necessary to
power down the server.
1. Shut down the OS as directed by the OS documentation.
2. Press the Power On/Standby button to place the server in standby mode.
When the server enters standby power mode, the system power LED changes
to amber.
3. Disconnect the power cords.
The system is now without power.
28 HP ProLiant ML370 Generation 4 Server Reference and Troubleshooting Guide
Extending the server from the rack
1. Loosen the thumbscrews that secure the server faceplate to the front of the
rack.
IMPORTANT: If the server is installed in a telco rack, remove the
server from the rack to access internal components.
2. Extend the server on the rack rails until the server rail-release latches engage.
WARNING: To reduce the risk of personal injury or
equipment damage, be sure that the rack is adequately stabilized
before extending a component from the rack.
WARNING: To reduce the risk of personal injury, be
careful when pressing the server rail-release latches and sliding
the server into the rack. The sliding rails could pinch your fingers.
3. After performing the installation or maintenance procedure, slide the server
back into the rack:
a. Press the server rail-release latches and slide the server fully into rack.
b. Secure the server by tightening the thumbscrews.
Server operations 29
Unlocking the front tower bezel
Tower servers have a removable front bezel that must be unlocked and opened
before accessing the hard drive cage, and before removing the access panel. The
door must remain closed during normal server operations.
Use the key provided with the server to unlock the bezel with a counterclockwise
turn.
If necessary, remove the front bezel.
30 HP ProLiant ML370 Generation 4 Server Reference and Troubleshooting Guide
Removing the access panel
WARNING: To reduce the risk of personal injury from hot
surfaces, allow the drives and the internal system components to
cool before touching them.
CAUTION: Do not operate the server for long periods without
the access panel. Operating the server without the access panel results
in improper airflow and improper cooling that can lead to thermal
damage.
1. Power down the server if performing a non-hot-plug installation or
maintenance procedure ("Powering down the server" on page 27
2. Extend or remove the server from the rack ("Extending the server from the
rack" on page 28
).
).
3. Open the front bezel ("Unlocking the front tower bezel" on page 29
).
4. Lift up on the hood latch handle and remove the access panel.
After installing hardware options, replace the access panel. Be sure that the panel
is locked into place securely before powering up the server.
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