HP Z800 Owners Manual

BIOS errors and warnings
The BIOS generates warnings/errors on invalid memory configurations:
●If the BIOS can find a valid memory configuration by disabling plugged-in memory, it does so and
reports a warning during POST. the workstation can still be started. The warning will indicate the
location of the failed DIMM on the system board or memory riser.
●If there is no way for the BIOS to obtain a valid memory configuration by disabling plugged-in
memory, the BIOS halts with a diagnostics code for memory...

Removing a DIMM
1.Disconnect power from the workstation (see Predisassembly procedures on page 73).
CAUTION:To ensure that DIMMs are not damaged during removal or installation, power off the
workstation and unplug the power cord from the AC power outlet. If you do not unplug the power
cord before installing memory, the modules might be damaged and the workstation will not
recognize the memory changes.
2.Remove the side access panel (see Removing the side access panel on page 75).
3.Remove the airflow...

Installing a DIMM
This section describes how to install a DIMM in the workstation.
Required DIMM installation order
DIMMs must be installed in a specified order, depending on the workstation processor configuration.
Single processor configuration
The illustration below shows the DIMM installation order for a single processor workstation.
Figure 5-89  Single-processor DIMM installation order
Dual processor configuration
The illustration below shows the DIMM installation order for a dual processor...

Installing the DIMM
NOTE:For best performance add DIMMs of the same size in pairs across CPUs.
1.Disconnect power from the workstation (see Predisassembly procedures on page 73).
2.Remove the side access panel (see 
Removing the side access panel on page 75).
3.Remove the airflow guide (see 
Removing the airflow guide on page 76).
4.Remove the memory fans (see 
Removing the memory fans on page 136).
5.Push outward on the DIMM socket levers as shown in the following figure.
Figure 5-91  Opening DIMM...

6.Align the DIMM connector key with the DIMM socket key, and then seat the DIMM firmly in the
socket 
 as shown in the following figure.
CAUTION:DIMMs and their sockets are keyed for proper installation. To prevent socket or DIMM
damage, align these guides properly when installing DIMMs.
Figure 5-92  Seating the DIMM
7.Secure the socket levers 2.
8.Reinstall all removed components and reconnect any cables that have been disconnected.
NOTE:If you receive a DIMM-related error message after you re-start the...

Expansion card slot identification
This section identifies and describes workstation expansion card slots and presents card configuration
information.
Expansion card slot description
The following figure identifies workstation expansion card slots.
Figure 5-93  Identifying expansion card slots
The following table describes the workstation expansion card slots.
Table 5-6  Expansion card slot description and compatibility
SlotTypeMechanical
compatibilityElectrical
compatibilitySlot power
(Maximum)
11PCIe2...

NOTE:The x1, x4, x8, and x16 designators describe the number of electrical PCIe lanes routed to an
expansion slot. For example, x16(8) means that the expansion slot is mechanically a x16 length
connector, with eight PCIe lanes connected.
Slots one and three use open-ended PCIe connectors, so a PCIe x16 card can inserted. This allows the
workstation to support more PCIe x16 expansion cards. A x16 card typically trains and runs at the
maximum lane width available by the expansion slot. The card runs at the...

Choosing an expansion card slot
Whenever possible, use the following tips to help you select the proper slot for an expansion card:
●Insert the primary graphics card in a PCIe x16 slot intended for graphics.
●Insert a second graphics card in a second PCIe x16 slot intended for a secondary graphics card.
●Install full-length cards in slots that support full-length cards.
●For optimal cooling and acoustics, do not insert a card next to a graphics card to avoid blocking
the graphics card heatsink and fan....

PCIe card
This section describes how to remove and install a PCIe card.
Removing a PCIe card
1.Disconnect power from the workstation (see Predisassembly procedures on page 73).
2.Remove the side access panel (see 
Removing the side access panel on page 75).
3.Remove the expansion card support (see 
Removing the expansion card support on page 77).
4.Remove all cables connected to the PCIe card.
5.Raise the rear retention clamp by lifting the metal bar or the green lever 
 as shown in the following
figure....

Installing a PCIe card
1.Disconnect power from the workstation (see Predisassembly procedures on page 73).
2.Remove the side access panel (see 
Removing the side access panel on page 75).
3.Remove the expansion card support (see 
Removing the expansion card support on page 77).
4.Select the desired expansion card slot for the PCIe card. See 
Choosing an expansion card slot
on page 146 for help in selecting a slot.
5.Raise the rear retention clamp by lifting the metal bar or the green lever as shown in...