• Topic ID: concept_jyb_d4s_njb
  • Version: 3.0
  • Date: Dec 29, 2020 1:01:31 AM

Z8G4 Host Computer Theory

1 PC Model HP Z8G4

The Host Computers have historically been Workstation computers supplied by OEM vendor Hewlett Packard. The model discussed below is the Z8G4, which is the latest in the series of HP Workstations. The following is a brief overview of the hardware and software theory associated with the Z8G4.

note:

Obtain complete details of the HP Z8G4 PC from Hewlett Packard’s support web site:

http://www.hp.com/. Click on Support & Drivers and search by PC model number.

Reference the HP Z8G4 Maintenance and Service Guide manual by clicking on the following PDF icon. 16585237.pdf

Reference the HP Z8G4 Quickspec manual by clicking on the following PDF icon. 16585236.pdf

Figure 1. HP Z8G4

1.1 Z8G4 Computer Hardware Overview

The Z8G4 computer is an Intel® Xeon™ processor-based workstation configured by GE Healthcare for use as the Stand Alone Console. Its basic configuration is:

1.1.1 Motherboard

The (Z8G4) computer motherboard utilizes a Dual Intel Xeon Processor E5-2640 V3 Series Processor Motherboard (called the “Systemboard” in HP terminology) with:

  • Dual Intel® Xeon™ 4110 2.1GHz 8 Core
  • 24 Memory Slots (6TB max.)
  • Integrated with:
    • Audio
    • GBE NIC Port (eth 2 & 3)
    • USB 3.0 ports (6 rear & 4 front)

Figure 2. HP’s Z8G4 Computer Motherboard Component Layout

1.1.2 DIMM Memory Modules

The (Z8G4) computer is equipped to handle up to 24 memory DIMM Modules in a variety of configurations. The configuration for Systems; Tri-Channel Mode 4 Slots each containing a 16GB DDR4-2666 Reg ECC RDIMM Memory Module for a total of 64 GB.

Figure 3. Z8G4 Computer Motherboard Layout - Utilization

1.1.3 SATA Hard Disk Drives and On-board Controller

The (Z8G4) computer utilizes two SATA hard disk drives:

  • Systems Disk: 3.5” Internal Bay 0: SATA Port 0= Enterprise 1TB SATA 7200 RPM HDD
  • Image Disk: 3.5”Internal Bay 1: SATA Port 1= 512GB SATA TLC SSD
  • Backup Disk: 3.5” Internal Bay 2: SATA Port 2= Enterprise 1TB SATA 7200 RPM HDD

The System Disk (SATA Drive 0) holds the CT Operating System and Application software. The Image Disk (SATA Drive 1) utilizes one large disk partition to hold patient image data. The SATA Controller is on the Host computer motherboard and is attached to the two SATA HDDs via SATA cables. Reference Illustration 3, SATA Connectors.

Figure 4. HP Z8G4 SATA Hard Disk Drive Bays - Internal to Z8G4

1.1.4 Dual Port GbE Ethernet Card

The Dual-Port Gigabit Ethernet HP I350 - T2 (PCIe3 x8) card, located in Slot 1 of the (Z8G4) computer motherboard, expands the Z8G4’s Ethernet interface to 4 total external ports (eth0-eth3).

1.1.5 Graphic Card

The NVidia Quadro P620 card, located in Slot 2 of the (Z8G4) computer motherboard, drives the Scan and Display monitors. This graphics card has 2GB GDDR5 memory and utilizes three mini Display Port (DP) output for the LCD monitors.

1.1.6 Recon GPU Card

The NVidia Quadro RTX5000 Graphics card, located in Slot 4 of the (Z8G4) computer motherboard, provides the reconstruction engine for the image generation subsystem. This Recon GPU card contains 16GB GDDR6 memory.

1.1.7 FDIP Card

The FDIP (PCIe x4) card, located in Slot 1 of the (Z8G4) computer motherboard, provides the interface for the incoming scan data coming from the Gantry/Detector/DAS subsystem. It converts the optical signal received from the Gantry into electrical raw data and writes that data to one of the double buffers on the card. When the received data count reaches a predetermined value, it will switch over to the other buffer. The Host Computer then receives this data via the PCI bus. This card supports 4 lanes, 2.5GT/s, PCIe bus interface in the FPGA, and should be able to support 833MB/sec data rate optical fiber interface.

1.1.8 Z Turbo Drive Storage Features

The HP Z8G4 Workstation can support up to 8 Z Turbo Drives. All Z Turbo Drives qualified on HP Z8G4 are NVMe storage devices. Up to four M.2 modules may be installed via two HP Z8 M.2 Adapter Modules, and up to four additional M.2 modules may be added via a Z Turbo Drive Quad Pro carrier. The use of two HP Z8 M.2 Adapter Modules requires that two CPUs are installed in the workstation.

The Personality Module carriers can accommodate two M.2 modules up to the 22110 form factor. The Z Turbo Drive Quad Pro can accommodate four modules up the 22110 form factor.

1.1.9 Power Supply (PSU)

A 1125 Watt PSU powers the (Z8G4) computer. The rated voltage range is 100-240 VAC, with line frequency of 50-60 Hz, auto switching.

1.2 (Z8G4) Computer Connections

Refer to the following Illustration for cable interconnect information.

Figure 5. (Z8G4) Computer Connections