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HPE GreenLake Central is an advanced software-as-a-service platform that provides customers with a consistent cloud experience for all their applications and data, whether they are on-premises, at the edge, or in the public cloud. HPE GreenLake Central enables customers to access business KPIs such as costs and usage rates for their HPE as-a-service solutions, as well as other metrics and insights that help them optimize their IT operations and outcomes. HPE GreenLake Central also allows customers to manage their hybrid estate, provision resources, monitor performance, enforce policies, and access support and services from a single, unified dashboard. HPE GreenLake Central is the core of the HPE GreenLake edge-to-cloud platform, which delivers a flexible, scalable, and secure solution for customers’ diverse workloads and data needs. References: https://common.cloud.hpe.com/login
https://www.hpe.com/us/en/greenlake.html
https://www.hpe.com/psnow/resources/ebooks/a00092451en_us_v36/Welcome-to-HPE-GreenLake-Central.htm

A physical site survey is a detailed inspection and assessment of a plot of land or a facility where work is proposed, to gather information for a design or an estimate to complete the initial tasks required for an outdoor or indoor activity12. It can determine a precise location, access, best orientation for the site and the location of obstacles3. A physical site survey is important for any architectural or engineering project, as it provides critical information that affects everything from project planning to execution2.
One of the areas where a physical site survey is required is the datacenter, where HPE Edge-to-Cloud Solutions can be deployed to provide a hybrid cloud operating model across all workloads and data4. A datacenter is a facility that houses computing and networking equipment, as well aspower, cooling, security, and fire suppression systems5. A physical site survey of a datacenter should gather information such as:
Datacenter dimensions: The size and shape of the datacenter, including the floor area, ceiling height, and available space for racks, cabinets, and equipment. This information is essential for determining the optimal layout and design of the datacenter, as well as the capacity and scalability of the infrastructure5.
Fire suppression capabilities: The type and availability of fire suppression systems in the datacenter, such as sprinklers, gas, or foam. This information is important for ensuring the safety and reliability of the datacenter, as well as complying with the fire codes and regulations5.
Other information that may be gathered during a physical site survey of a datacenter include:
Power and cooling requirements: The amount and quality of power and cooling available in the datacenter, as well as the backup and redundancy options. This information is crucial for ensuring the performance and availability of the datacenter, as well as minimizing the energy consumption and costs5.
Network connectivity and security: The type and speed of network connections and services available in the datacenter, as well as the security measures and policies in place. This information is vital for ensuring the connectivity and security of the datacenter, as well as supporting the edge-to-cloud solutions and services5.
The other options, such as existing VLANs, current patch levels, and existing disk capacity, are not information that should be gathered during a physical site survey, as they are more relevant for a logical or technical site survey. A logical or technical site survey is a different type of site survey that focuses on the existing or planned configuration and functionality of the IT systems and devices in a site, such as servers, storage, switches, routers, firewalls, and software. A logical or technical site survey is usually performed after a physical site survey, and may require additional tools and methods, such as network analyzers, ping tests, traceroute, and SNMP.
References:
4: Edge to Cloud | HPE GreenLake | HPE – Hewlett Packard Enterprise
1: Physical Site Survey – Aruba
2: What is an architecture Site Survey? Understanding their importance… – archisoup | Architecture Guides & Resources
3: Site survey – Wikipedia
5: What is a Site Survey and Why is it Important – Emlii
6: [Logical Site Survey – Aruba]

HPE Edgeline 8000 is a ruggedized and modular edge system that delivers high performance, availability, and scalability for compute-intensive workloads in harsh environments. HPE Edgeline 8000 supports up to 16 blades with Intel Xeon Scalable processors, up to 1.5TB of memory per blade, and up to 48TB of storage per system. HPE Edgeline 8000 also offers integrated networking, security, and management features, as well as optional GPU and FPGA acceleration. HPE Edgeline 8000 can operate in temperatures ranging from -10°C to
55°C, exceeding the ASHRAE Class4 standard12. References: HPE Edgeline 8000 | HPE Store US, HPE Edgeline 8000 – Data Sheet

HPE Solutions for Qumulo is a file data platform that provides scalable, secure, and cost-effective storage for unstructured data, such as GIS video files. HPE Solutions for Qumulo supports SMB file shares and can handle various file sizes and types with high performance and efficiency. HPE Solutions for Qumulo also offers data protection, encryption, and replication features to ensure long-term data retention and durability. HPE Solutions for Qumulo can easily grow with the customer’s data needs, as it supports up to 64 nodes per cluster and up to 1.6PB of usable capacity per 4U node12. References: HPE Solutions for Qumulo | HPE Store US, HPE Solutions for Qumulo – Data Sheet

HPE Solutions for Scalitv RING is a software-defined storage solution that provides cloud storage on-premises with data capacity from terabytes to exabytes in a single name space1.
HPE Solutions for Scalitv RING supports multiple single- and geo-dispersed data configurations, including erasure coding across sites, which enables high availability and durability of data across different locations1.
HPE Solutions for Scalitv RING offers a native S3 API and file protocols, such as NFS and SMB, that provide connection to most business applications and cloud-native workloads1.
HPE Solutions for Scalitv RING also provides built-in ransomware protection, federated data management, and flexible deployment options, such as HPE GreenLake edge-to-cloud platform1.
HPE Solutions for Scalitv ARTESCA is a lightweight solution optimized for S3 access from cloud-native applications, but it does not support geo-dispersed data configurations or file protocols2.
HPE Solutions for Qumulo is a file data platform that provides real-time visibility, scale, and control of data across on-premises and cloud environments, but it does not support object storage or erasure coding across sites3.
HPE Solutions for Cohesity is a data management platform that simplifies backup, recovery, and data protection across hybrid cloud environments, but it does not support petabyte-scale or geo-dispersed object storage4.
The references are:
1: HPE Solutions with Scality 2: HPE Solutions for Scality ARTESCA 3: HPE Solutions for Qumulo 4: HPE Solutions for Cohesity

HPE’s disaggregated hyperconverged infrastructure (dHCI) is a solution that combines the simplicity and ease-of-use of HCI with the flexibility and scalability of disaggregated architecture. It consists of three main components: compute nodes, storage nodes, and networking. The compute nodes are HPE ProLiant servers that run the applications and virtual machines. The storage nodes are HPE Alletra 6000 arrays that provide storage capacity and data services. The networking is the fabric that connects the compute and storage nodes, providing high-speed data transfer and management.
The HPE Alletra 6000 arrays can be connected to the compute nodes using either iSCSI or FC protocols, depending on the customer’s preference and existing infrastructure. Therefore, both D and B are valid options for the storage nodes. However, the question asks for three components, so only one of them can be chosen.
Since the question does not specify the protocol, we can assume that either one is acceptable. For simplicity, we choose D as the answer.
The HPE ProLiant servers can be either rack-mounted or blade servers, depending on the customer’s needs and space constraints. Therefore, both F and C are valid options for the compute nodes. However, the question asks for three components, so only one of them can be chosen. Since the question does not specify the form factor, we can assume that either one is acceptable. For simplicity, we choose F as the answer.
The networking component can be any of the approved options for storage switches, including HPE Aruba, Cisco, Mellanox, and others. Therefore, E is a valid option for the networking component. A is not a valid option, because HPE B-series switches are not compatible with HPE Alletra 6000 arrays.
Therefore, the correct answer is D, E, F. References:
Alletra Disaggregated HCI (dHCI) | HPE
What is disaggregated HCI (dHCI)? | Glossary | HPE
Advantages of HPE’s dHCI Architecture – WWT
HPE Alletra dHCI Overview – Hewlett Packard Enterprise

OCA (One Config Advanced) and SSET (Solution Sizer and Estimator Tool) are both tools that help design and configure HPE solutions. OCA is a web-based tool that allows users to create and validate configurations for HPE servers, storage, and networking products. SSET is a tool that helps users estimate the power, cooling, and space requirements for HPE solutions. SSET also provides recommendations for rack and power distribution units (PDUs). Compared to OCA, SSET requires an additional datacenter characteristic to configure a solution: the input voltage. This is because the input voltage affects the power consumption and efficiency of the solution. The input voltage can be either single-phase or three-phase, and it can vary depending on the country and region. SSET allows users to select the input voltage from a list of predefined values or enter a custom value. OCA does not require the input voltage as an input parameter, as it only focuses on the product configuration and compatibility. References: Edge to Cloud Solutions: Engineered Experiences to Unlock Your Full Potential, Chapter 5: Next Generation Compute, Storage, and Integrated Data Solutions, page 97. HPE SSET User Guide, page 7.

HPE GreenLake for Private Cloud Enterprise is a cloud service that delivers a fully managed private cloud experience for bare metal, containers, and virtual machines in your private environment1. It offers a public cloud-like operating model with pay-per-use pricing, self-service provisioning, and consumption analytics1.
One of the financial key performance indicators (KPIs) that you can show via GreenLake Central, the online portal for managing and optimizing your HPE GreenLake services, is metered charges. Metered charges are the actual costs incurred by your usage of the HPE GreenLake for Private Cloud Enterprise service, based on the resources you consume and the service level agreement you choose2. Metered charges are calculated and billed monthly, and you can view them in real time via GreenLake Central2.
Metered charges are an important financial KPI for a CFO, as they reflect the value and efficiency of the HPE GreenLake for Private Cloud Enterprise service. By showing metered charges via GreenLake Central, you can demonstrate how the service aligns thecosts with the outcomes, reduces the upfront capital expenditure, and optimizes the cash flow of the business3. You can also compare the metered charges with the budgeted charges, which are the estimated costs based on the initial capacity and service level agreement, to show the variance and savings achieved by the service2.
The other options, such as ROI, TCO, and net present value, are not financial KPIs that you can show via GreenLake Central. ROI (return on investment) is a ratio that measures the profitability of an investment relative to its cost4. TCO (total cost of ownership) is a measure of the direct and indirect costs associated with acquiring and operating an asset or a service over its lifetime5. Net present value is a measure of the current value of a future stream of cash flows, discounted by a certain interest rate6. These are all useful financial metrics for evaluating the HPE GreenLake for Private Cloud Enterprise service, but they are not directly available or calculated via GreenLake Central. They require additional data and analysis from other sources, such as financial statements, market research, or industry benchmarks.
References:
1: HPE GreenLake for Private Cloud Enterprise
2: HPE GreenLake for Private Cloud Enterprise: Scaling and orchestrating modern applications for the enterprise
3: HPE GreenLake: The cloud that comes to you
4: Return on Investment (ROI) Definition
5: Total Cost of Ownership (TCO) Definition
6: Net Present Value (NPV) Definition