HP Z800 Owners Manual

Power supply description
This workstation offers an 850W power supply and an 1110W power supply to provide power for the
workstation. The power supplies are compatible with ENERGY STAR requirements, and offer 85%
efficient or better operation.
Power supply voltages
NOTE:This workstation incorporates the blind-mate plug feature. You do not have to manipulate a
cable harness when removing or installing the power supply.
Table 1-5  Power supply source voltages
Source voltageDescription
+12 V-CPU0Input to...

Power supply currents
Table 1-6  Maximum current per rail
Voltage rail850W maximum
continuous current1110W maximum
continuous current
+12 V-CPU018.0A18.0A
+12 V-CPU118.0A18.0A
+12 V-MO18.0A18.0A
+12 V-M118.0A18.0A
+12 V-B18.0A18.0A
+12 V-S18.0A18.0A
+12 V-D18.0A18.0A
+12 V-G/G118.0A18.0A
+12 V-G2N/A18.0A
V12N0.15A0.15A
+5 V-SB 5.00A 9.0A
CAUTION:Do not exceed 70.0 amps (840 watts) of 12-volt (CPU0/CPU1/M0/M1/B/D/S/G) power
combination for the 850W power supply.
Do not exceed 92.5A amps (1110 watts) of...

Power supply specifications
Table 1-7  Power supply specifications
ItemDescription
Power supply850W Wide Ranging, Active PFC1110W Wide Ranging, Active PFC*
Operating voltage range90-269 VAC90-269 VAC
Rated voltage range100-240 VAC118 VAC100-240 VAC118 VAC
Rated line frequency50-60 Hz400 Hz50-60 Hz400 Hz
Operating line frequency range47-66 Hz393-407 Hz47-66 Hz393-407 Hz
Rated input current11A@100-127 VAC
5.5A@200-240 VAC11.0A@118 VAC12.0A@100 VAC,
1110W
12.0A@115 VAC,
1250W
10.0A@200-240VA
C,...

See the Site preparation guide for the HP 800 workstation at http://hp.com/support/
workstation_manuals for further power consumption information.
This product is in compliance with U.S. Executive Order 13221.
System fans 
This workstation includes:
●Two rear system fans
●One CPU0 fan
●One CPU1 fan (optional)
●Two power supply fans
●Two memory fans
●One upper front system fan
●One lower front system fan (optional)
In addition, some graphics cards include onboard fans.
Resetting the power supply 
If an...

Ensuring proper ventilation
Proper ventilation for the system is important for workstation operation. Follow these guidelines to
ensure adequate ventilation:
●Operate the workstation on a sturdy, level surface.
●Place the workstation in an area with adequate ventilation. Provide at least 6 inches of clearance
at the front and back of the workstation as shown in the following figure.
Your workstation might look different than the one shown.
Figure 1-5  Proper workstation ventilation
●Ensure that the...

Topics
ENERGY STAR Qualification on page 15Hyper-threading on page 17
EUP compliance mode on page 16Intel Turbo Boost Technology on page 17
Accessibility on page 16HP Cool Tools on page 17
14 Chapter 1   Workstation overview ENWW 

ENERGY STAR Qualification
HP computers marked with the ENERGY STAR logo are compliant with the applicable U.S.
Environmental Protection Agency (EPA) ENERGY STAR specifications for computers. The EPA
ENERGY STAR logo does not imply endorsement by the EPA. As an ENERGY STAR Partner, Hewlett-
Packard Company has determined the products marked with the ENERGY STAR logo are ENERGY
STAR qualified per the applicable ENERGY STAR guidelines for energy efficiency. The following logo
appears on all ENERGY STAR...

EUP compliance mode
This workstation provides EUP compliance mode capability.
When enabled, this feature enables the workstation to shut down to the lowest possible power state by
removing all power to the system board.
When disabled, the workstation powers down conventionally.
When the workstation is shutdown in EUP compliance mode, you must power it up with the workstation
power button.
Enabling EUP compliance mode
To enable EUP compliance mode:
1.Press F10 during start up.
2.Using the arrow keys,...

Hyper-threading
This workstation supports Hyper-Threading Technology (HTT) which is an Intel-proprietary technology
used to provide process parallelization. The technology improves processor performance under certain
workloads by providing useful work for execution units that would otherwise be idle. A processor with
Hyper-Threading enabled is treated by the operating system as two processors instead of one. Hyper-
threading relies on support in the operating system as well as the CPU.
To implement...

2 Setting up the operating system
This chapter provides setup and update information for the workstation operating system. It includes
these topics:
Topics
Setting up the Microsoft operating system on page 19
Setting up Red Hat Enterprise Linux on page 20
Setting up Novell SLED on page 21
Updating the workstation on page 21
This chapter also includes information on how to determine that you have the latest BIOS, drivers, and
software updates installed on the workstation.
CAUTION:Do not add optional...