HP ProLiant ML310 User Manual
HP ProLiant ML310 Generation 2 Server
User Guide
February 2005 (First Edition)
Part Number 378289-001
© Copyright 2005 Hewlett-Packard Development Company, L.P.
Microsoft, Windows, and Windows NT are US registered trademarks of Microsoft Corporation.
Linux is a U.S. registered trademark of Linus Torvalds.
Hewlett-Packard Company 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 HP products are set forth in the express limited warranty
statements accompanying such products. Nothing herein should be construed as constituting an additional
warranty.
HP ProLiant ML310 Generation 2 Server User Guide
February 2005 (First Edition)
Part Number 378289-001
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 7
Front Panel Components......................................................................................................................7
Front Panel LEDs and Buttons.............................................................................................................8
Rear Panel Components....................................................................................................................... 9
Rear Panel LEDs and Buttons............................................................................................................ 10
System Board Components................................................................................................................11
System Maintenance Switch................................................................................................... 11
System Board LEDs........................................................................................................................... 13
System LEDs and Internal Health LED Combinations...................................................................... 14
SCSI IDs ............................................................................................................................................16
Hot-Plug SCSI Hard Drive LEDs......................................................................................................17
Hot-Plug SCSI Hard Drive LED Combinations.................................................................................18
Identifying Fans .................................................................................................................................19
Server Operations 21
Powering Up the Server..................................................................................................................... 21
Powering Down the Server ................................................................................................................21
Unlocking the Tower Bezel ...............................................................................................................22
Removing the Access Panel...............................................................................................................22
Server Setup 25
Optional Installation Services ............................................................................................................25
Rack Planning Resources................................................................................................................... 26
Optimum Environment ......................................................................................................................27
Space and Airflow Requirements...........................................................................................27
Temperature Requirements.....................................................................................................28
Power Requirements...............................................................................................................29
Electrical Grounding Requirements........................................................................................30
Rack Warnings and Cautions............................................................................................................. 30
Identifying Tower Server Shipping Carton Contents.........................................................................33
Installing Hardware Options ..............................................................................................................33
Setting up a Tower Server..................................................................................................................33
Powering Up and Configuring the Server..........................................................................................35
Installing the Operating System.........................................................................................................36
Registering the Server........................................................................................................................36
4 HP ProLiant ML310 Generation 2 Server User Guide
Hardware Options Installation 37
Introduction........................................................................................................................................ 37
Processor and Heatsink...................................................................................................................... 38
Memory Options ................................................................................................................................41
DIMM Installation Guidelines................................................................................................ 41
Installing DIMMs ...................................................................................................................42
Hard Drive Options............................................................................................................................ 43
Non-Hot-Plug SATA Hard Drive...........................................................................................44
Non-Hot-Plug SCSI Hard Drive.............................................................................................46
Hot-Plug SATA and SAS Hard Drives...................................................................................49
SAS Controller................................................................................................................................... 50
Removing the CD-ROM Drive.......................................................................................................... 51
DVD-ROM Drive ..............................................................................................................................52
Optional Diskette Drive .....................................................................................................................53
Expansion Boards ..............................................................................................................................54
Expansion Slot Cover .............................................................................................................54
Installing Expansion Boards................................................................................................... 55
Server Cabling 57
Server Cabling ...................................................................................................................................57
Hot-Plug SCSI Cabling......................................................................................................................57
Non-Hot-Plug SCSI Cabling.............................................................................................................. 58
Hot-Plug SATA Cabling....................................................................................................................59
Non-Hot-Plug SATA Cabling............................................................................................................ 59
SAS Cabling.......................................................................................................................................60
Server Software and Configuration Utilities 61
Configuration Tools...........................................................................................................................61
SmartStart Software................................................................................................................61
HP ROM-Based Setup Utility ................................................................................................63
Array Configuration Utility ....................................................................................................65
Option ROM Configuration for Arrays .................................................................................. 66
HP ProLiant Essentials Rapid Deployment Pack ...................................................................66
Re-Entering the Server Serial Number and Product ID.......................................................... 67
Management Tools.............................................................................................................................67
Automatic Server Recovery....................................................................................................68
ROMPaq Utility...................................................................................................................... 68
System Online ROM Flash Component Utility...................................................................... 69
Erase Utility............................................................................................................................69
Management Agents...............................................................................................................70
HP Systems Insight Manager..................................................................................................70
USB Support and Functionality..............................................................................................70
Diagnostic Tools ................................................................................................................................72
Survey Utility .........................................................................................................................72
Contents 5
Array Diagnostic Utility .........................................................................................................72
HP Insight Diagnostics ...........................................................................................................73
Integrated Management Log................................................................................................... 73
Keeping the System Current ..............................................................................................................73
Drivers.................................................................................................................................... 74
Resource Paqs......................................................................................................................... 74
ProLiant Support Packs ..........................................................................................................75
Operating System Version Support ........................................................................................75
Change Control and Proactive Notification............................................................................75
Care Pack................................................................................................................................ 75
Battery Replacement 77
Troubleshooting 79
Server Diagnostic Steps ..................................................................................................................... 79
Important Safety Information.............................................................................................................80
Symbols on Equipment........................................................................................................... 80
Warnings and Cautions...........................................................................................................81
Preparing the Server for Diagnosis ....................................................................................................83
Symptom Information........................................................................................................................ 84
Service Notifications.......................................................................................................................... 85
Loose Connections.............................................................................................................................85
Diagnostic Steps.................................................................................................................................85
Start Diagnosis Flowchart.......................................................................................................86
General Diagnosis Flowchart..................................................................................................88
Power-On Problems Flowchart...............................................................................................90
POST Problems Flowchart .....................................................................................................93
OS Boot Problems Flowchart................................................................................................. 95
Server Fault Indications Flowchart......................................................................................... 98
ROMPaq Disaster Recovery ............................................................................................................101
Manual Recovery............................................................................................................................. 101
Other Information Resources...........................................................................................................102
Regulatory Compliance Notices 103
Regulatory Compliance Identification Numbers..............................................................................103
Federal Communications Commission Notice.................................................................................104
FCC Rating Label.................................................................................................................104
Class A Equipment ...............................................................................................................104
Class B Equipment ...............................................................................................................105
Declaration of Conformity for Products Marked with the FCC Logo, United States Only............. 105
Modifications ...................................................................................................................................106
Cables...............................................................................................................................................106
Mouse Compliance Statement..........................................................................................................106
6 HP ProLiant ML310 Generation 2 Server User Guide
European Union Regulatory Notice................................................................................................. 106
Canadian Notice (Avis Canadien).................................................................................................... 107
Japanese Notice................................................................................................................................ 108
BSMI Notice ....................................................................................................................................108
Laser Compliance ............................................................................................................................108
Battery Replacement Notice ............................................................................................................109
Taiwan Battery Recycling Notice ....................................................................................................110
Electrostatic Discharge 111
Preventing Electrostatic Discharge ..................................................................................................111
Grounding Methods to Prevent Electrostatic Discharge.................................................................. 112
Server Specifications 113
Server Specifications........................................................................................................................113
Environmental Specifications .......................................................................................................... 113
Technical Support 115
Related Documents ..........................................................................................................................115
HP Contact Information................................................................................................................... 115
Before You Contact HP ...................................................................................................................116
Acronyms and Abbreviations 117
Index 121
7
Server Component Identification
In This Section
Front Panel Components ................................................................................................................7
Front Panel LEDs and Buttons .......................................................................................................8
Rear Panel Components..................................................................................................................9
Rear Panel LEDs and Buttons ......................................................................................................10
System Board Components ..........................................................................................................11
System Board LEDs .....................................................................................................................13
System LEDs and Internal Health LED Combinations ................................................................14
SCSI IDs.......................................................................................................................................16
Hot-Plug SCSI Hard Drive LEDs.................................................................................................17
Hot-Plug SCSI Hard Drive LED Combinations...........................................................................18
Identifying Fans............................................................................................................................19
Front Panel Components
Item Description
1 Power button
8 HP ProLiant ML310 Generation 2 Server User Guide
Item Description
2 Power LED
3 Hard Drive activity LED
4 NIC LED
5 Internal health LED
6 USB connectors (2)
7 Bezel lock
8 CD-ROM drive indicator LED
9 CD-ROM drive ejector button
Front Panel LEDs and Buttons
Item Description Status
1 Power on/Standby button N/A
2 Power on/Standby LED 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
Server Component Identification 9
Item Description Status
3 Hard drive activity LED Green = Hard drives are properly connected and functioning
Off = No hard drive activity
4 NIC link/activity LED
(embedded NIC only)
Green = Linked to network
Flashing green = Linked with activity on the network
Off = No network connection
5 Internal system health
LED
Green = Normal (system on)
Amber = System health is degraded
Red = System health is critical
Off = Normal (system off)
Rear Panel Components
Item Description
1 Power cord connector
2 Mouse connector
3 Keyboard connector
4 Serial connector
10 HP ProLiant ML310 Generation 2 Server User Guide
Item Description
5 Video connector
6 USB connectors (2)
7 RJ-45 Ethernet connector
8 Parallel connector
Rear Panel LEDs and Buttons
Item Description Status
1 10/100/1000 NIC link LED On = Link
Off = No link
2 10/100/1000 NIC standby
LED
Flashing = Activity
Off = No activity
Server Component Identification 11
System Board Components
Item Description Item Description
1 Mouse/keyboard connectors 10 Diskette drive connector
2 Processor power connector 11 RILOE connector
3 Power supply connector 12 32-bit PCI slot
4 DIMM slot 4 (Channel B) 13 PCI Express x4 slot *
5 DIMM slot 3 (Channel B) 14 PCI-X slot 2
6 DIMM slot 2 (Channel A) 15 PCI-X slot 1
7 DIMM slot 1 (Channel A) 16 RJ-45 connector
8 IDE connector 17 USB connectors (2)
9 SATA connector 18 Serial/video/parallel ports
* x8 PCI Express cards are supported, but will run at x4 speeds.
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.
12 HP ProLiant ML310 Generation 2 Server User Guide
Position Description Function
S1 Reserved Reserved
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 13
System Board LEDs
Item LED Description Status
1 PPM error Off = Normal
Amber = PPM failed or missing
2 Multibit error Off = Normal
Amber = A multibit error has occurred
3 Single bit error Off = Normal
Amber = Single bit error limit has been
exceeded
4 DIMM 4 failure Off = Normal
Amber = DIMM 4 has failed or is missing
5 DIMM 3 failure Off = Normal
Amber = DIMM 3 has failed or is missing
6 DIMM 2 failure Off = Normal
Amber = DIMM 2 has failed or is missing
7 DIMM 1 failure Off = Normal
Amber = DIMM 1 has failed or is missing
14 HP ProLiant ML310 Generation 2 Server User Guide
Item LED Description Status
8 Power good Off = Normal
Green = Power failed
9 Processor failure Off = Normal
Amber = Processor has failed
10 System temperature
alert
11 System fan failure Off = Normal
12 Processor fan failure Off = Normal
Off = Normal
Amber = System temperature has exceeded
OS cautionary level
Amber = System fan has failed or is missing
Amber = Processor fan has failed or is
missing
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.
System LED and
Color
Internal Health
LED Color
Status
Processor failure,
socket X (Amber)
Amber Processor in socket X is in a pre-failure condition.
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.
Server Component Identification 15
System LED and
Color
PPM failure, slot X
(Amber)
Internal Health
Status
LED Color
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)
16 HP ProLiant ML310 Generation 2 Server User Guide
SCSI IDs
Item Description
0 SCSI ID 0
1 SCSI ID 1
2 SCSI ID 2
3 SCSI ID 3
Server Component Identification 17
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
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
18 HP ProLiant ML310 Generation 2 Server User Guide
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
On Off Off
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.
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.
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.
Server Component Identification 19
Identifying Fans
Item Description
1 System fan
2 Processor fan
21
Server Operations
In This Section
Powering Up the Server................................................................................................................21
Powering Down the Server...........................................................................................................21
Unlocking the Tower Bezel..........................................................................................................22
Removing the Access Panel .........................................................................................................22
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.
22 HP ProLiant ML310 Generation 2 Server User Guide
Unlocking the Tower Bezel
The removable tower bezel must be unlocked and opened before accessing the
hard drive cage and before removing the access panel. The bezel must remain
closed during normal server operations.
If necessary, remove the tower bezel.
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.
2. Extend or remove the server from the rack.
Server Operations 23
3. Open the tower bezel ("Unlocking the Tower Bezel" on page 22).
4. Loosen the two captive thumbscrews.
5. Slide the access panel toward the rear of the server, and remove from the
server.
After installing hardware options, replace the access panel. Be sure that the panel
is locked into place securely before powering up the server.
25
Server Setup
In This Section
Optional Installation Services.......................................................................................................25
Rack Planning Resources .............................................................................................................26
Optimum Environment.................................................................................................................27
Rack Warnings and Cautions .......................................................................................................30
Identifying Tower Server Shipping Carton Contents ...................................................................33
Installing Hardware Options.........................................................................................................33
Setting up a Tower Server ............................................................................................................33
Powering Up and Configuring the Server ....................................................................................35
Installing the Operating System ...................................................................................................36
Registering the Server ..................................................................................................................36
Optional Installation Services
Delivered by experienced, certified engineers, HP Care Pack services help you
keep your servers up and running with support packages tailored specifically for
HP ProLiant systems. HP Care Packs let you integrate both hardware and
software support into a single package. A number of service level options are
available to meet your needs.
HP Care Pack Services offer upgraded service levels to expand your standard
product warranty with easy-to-buy, easy-to-use support packages that help you
make the most of your server investments. Some of the Care Pack services are:
•
Hardware support
− 6-Hour Call-to-Repair
− 4-Hour 24x7 Same Day
− 4-Hour Same Business Day
•
Software support
− Microsoft®
26 HP ProLiant ML310 Generation 2 Server User Guide
− Linux
− HP ProLiant Essentials (HP SIM and RDP)
− VMWare
• • Integrated hardware and software support
− Critical Service
− Proactive 24
− Support Plus
− Support Plus 24
Startup and implementation services for both hardware and software
For more information on Care Packs, refer to the HP website
(http://www.hp.com/hps/carepack/servers/cp_proliant.html
Rack Planning Resources
).
The rack resource kit ships with all HP branded or Compaq branded 9000,
10000, and H9 series racks. A summary of the content of each resource follows:
• Custom Builder is a web-based service for configuring one or many racks.
Rack configurations can be created using:
− A simple, guided interface
− Build-it-yourself mode
For more information, refer to the HP website
(http://www.hp.com/products/configurator
).
• The Installing Rack Products video provides a visual overview of operations
required for configuring a rack with rack-mountable components. It also
provides the following important configuration steps:
− Planning the site
− Installing rack servers and rack options
− Cabling servers in a rack
Server Setup 27
− Coupling multiple racks
• The Rack Products Documentation CD enables you to view, search, and print
documentation for HP and Compaq branded racks and rack options. It also
helps you set up and optimize a rack in a manner that best fits your
environment.
If you intend to deploy and configure multiple servers in a single rack, refer to
the white paper on high-density deployment on the HP website
(http://www.hp.com/products/servers/platforms
).
Optimum Environment
When installing the server, select a location that meets the environmental
standards described in this section.
Space and Airflow Requirements
Tower Server
In a tower configuration, leave at least a 7.6-cm (3-in) clearance space at the
front and back of the server for proper ventilation.
Rack Server
To allow for servicing and adequate airflow, observe the following space and
airflow requirements when deciding where to install a rack:
•
Leave a minimum clearance of 76.2 cm (30 in) in front of the rack.
•
Leave a minimum clearance of 76.2 cm (30 in) behind the rack.
•
Leave a minimum clearance of 121.9 cm (48 in) from the back of the rack to
the back of another rack or row of racks.
HP servers draw in cool air through the front and expel warm air through the
rear. Therefore, the front and rear rack doors must be adequately ventilated to
allow ambient room air to enter, and allow the warm air to escape from the
cabinet.
28 HP ProLiant ML310 Generation 2 Server User Guide
CAUTION: To prevent improper cooling and damage to the
equipment, do not block the ventilation openings.
The 9000 and 10000 Series racks provide proper server cooling from flowthrough perforations in the front and rear doors that provide 64 percent open area
for ventilation.
CAUTION: When using a Compaq branded 7000 Series rack,
you must install the high airflow rack door insert [P/N 327281-B21 (42U)
or P/N 157847-B21 (22U)] to provide proper front-to-back airflow and
cooling.
CAUTION: If a third-party rack is used, observe the following
additional requirements to ensure adequate airflow and to prevent
damage to the equipment:
• • Front and rear doors—If the 42U rack includes closing front and rear
doors, you must allow 5,350 sq cm (830 sq in) of holes evenly
distributed from top to bottom to permit adequate airflow (equivalent
to the required 64 percent open area for ventilation).
Side—The clearance between the installed rack component and the
side panels of the rack must be a minimum of 7 cm (2.75 in).
When vertical space in the rack is not filled by a server or rack component, the
gaps between the components cause changes in airflow through the rack and
across the servers. Cover all gaps with blanking panels to maintain proper
airflow.
CAUTION: Always use blanking panels to fill empty vertical
spaces in the rack. This arrangement ensures proper airflow. Using a
rack without blanking panels results in improper cooling that can lead to
thermal damage.
Temperature Requirements
To ensure continued safe and reliable equipment operation, install or position the
system in a well-ventilated, climate-controlled environment.
Server Setup 29
The maximum recommended ambient operating temperature (TMRA) for most
server products is 35°C (95°F). The temperature in the room where the rack is
located must not exceed 35°C (95°F).
CAUTION: To reduce the risk of damage to the equipment
when installing third-party options:
• • Do not permit optional equipment to impede airflow around the
server or to increase the internal rack temperature beyond the
maximum allowable limits.
Do not exceed the manufacturer’s TMRA.
Power Requirements
Installation of this equipment must comply with local and regional electrical
regulations governing the installation of information technology equipment by
licensed electricians. This equipment is designed to operate in installations
covered by NFPA 70, 1999 Edition (National Electric Code) and NFPA-75, 1992
(code for Protection of Electronic Computer/Data Processing Equipment). For
electrical power ratings on options, refer to the product rating label or the user
documentation supplied with that option.
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. Consult the electrical
authority having jurisdiction over wiring and installation
requirements of your facility.
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.
When installing more than one server, you may need to use additional power
distribution devices to safely provide power to all devices. Observe the following
guidelines:
• Balance the server power load between available AC supply branch circuits.
30 HP ProLiant ML310 Generation 2 Server User Guide
•
Do not allow the overall system AC current load to exceed 80 percent of the
branch circuit AC current rating.
•
Do not use common power outlet strips for this equipment.
•
Provide a separate electrical circuit for the server.
Electrical Grounding Requirements
The server must be grounded properly for proper operation and safety. In the
United States, you must install the equipment in accordance with NFPA 70, 1999
Edition (National Electric Code), Article 250, as well as any local and regional
building codes. In Canada, you must install the equipment in accordance with
Canadian Standards Association, CSA C22.1, Canadian Electrical Code. In all
other countries, you must install the equipment in accordance with any regional
or national electrical wiring codes, such as the International Electrotechnical
Commission (IEC) Code 364, parts 1 through 7. Furthermore, you must be sure
that all power distribution devices used in the installation, such as branch wiring
and receptacles, are listed or certified grounding-type devices.
Because of the high ground-leakage currents associated with multiple servers
connected to the same power source, HP recommends the use of a PDU that is
either permanently wired to the building’s branch circuit or includes a
nondetachable cord that is wired to an industrial-style plug. NEMA locking-style
plugs or those complying with IEC 60309 are considered suitable for this
purpose. Using common power outlet strips for the server is not recommended.
Rack Warnings and Cautions
WARNING: To reduce the risk of personal injury or
damage to the equipment, be sure that:
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