Intro - Theory

Question 1

What is the definition of data center?

Answer 1

It is building whose primary purpose is to house a computer room and its support areas, so that services can run continuously and efficiently

Question 2

What are the enterprise data centers?

Answer 2

They are facilities fully built, maintained, operated and managed by the company providing the target service

Question 3

What are the pros and cons of an enterprise data center?

Answer 3

Pros: asset for the company, complete control of the operational activities

Cons: high capital Investment, requires necessary expertise to design and run the data center

Question 4

What are some of the characteristics of where to build a DC that better fits a data center?

Answer 4

Highly secure site

Redundant electrical, and current condition power distribution systems

Redundant climate control systems

Raised – Flor system centers, integrated with multiple fire suppression systems

Question 5

What are the collocation data centers?

Answer 5

They are large facilities, built to accommodate multiple businesses. Each business rents its own space within data center. It is possible to feel the space with proprietary IT equipment, or to rent some part of it from the co-locator.

Question 6

What are the pros and cons of the collocation data centers?

Answer 6

Pros: steel high control on the IT equipment and operational environment, no need of data center design skills, lower capital investment, staff dedicated to guarantee operation and shared costs for high-quality environment

Cons: data center is not an asset anymore, restrictions on maintenance access with regards to time and resources, IT equipment purchase and updates are on your own

Question 7

What are the managed hosting platforms or third party data centers?

Answer 7

VR data centers managed by a third-party, the business does not own or control the data center. The customer rents IT equipment and infrastructure it needs. Resources are not shared, still a single tenant solution.

Question 8

What are the pros and cons of the third-party data centers?

Answer 8

Pros: low capital investment, cost savings for a small business, no need of expertise to design and run the data center

Cons: higher operational costs, lower control on the operational activities, possibility of customer lock-in problem

Question 9

What is a computing infrastructure?

Answer 9

It is a technological infrastructure that provides hardware and software for computation to other systems and services

Question 10

What are the components of the computing continuum?

Answer 10

Internet of things, embedded devices, fog/edge computing systems, data center

Question 11

Thinking of the compute continuum as in the slides (graph with RAM versus computation speed up) where are the data centers? And what are the pros and cons of it?

Answer 11

They are at the Top right side of the graph, what we’re presents a big computation split up and a big RAM.

Pros: lower IT costs, high-performance, instant software updates, unlimited storage capacity, increased data reliability, universal data access, device independence

Cons: require a constant Internet connection, do not work well with low speed connections, hardware features might be limited, privacy and security issues, high power consumption, latency in making decision

Question 12

Where is the Internet of things in the computation speed up and RAM graph compared to the other options in the computing continuum?

Answer 12

It is on the bottom left of the graph. it has a lower computation speed up and RAM if compared to any other computing infrastructure in the computing continuum

Question 13

What are the pros and cons of the Internet of things devices?

Answer 13

Pros: highly pervasive wireless connection, battery powered, low costs, sensing and actuating

Cons: low computing ability, constraints on energy, constraints on memory, difficulties in programming

Question 14

Where are the embedded PCs in the computation speed up versus RAM graph?

Answer 14

It is in the left between Internet of things and PC. It offers a computation speed up and RAM capacity higher than the Internet of things devices, but lower than Fog/edge and data centers.

Question 15

What are the pros and cons of the embedded PCs?

Answer 15

Pros: pervasive computing, highly performance unit, availability of development boards, programmed as PCs, large community

Cons: pretty high power consumption, Hardware design has to be done

Question 16

What is the key difference between fog and edge computing?

Answer 16

Where did data is processed. In edge computing the data is processed closest to the sensors (component producing data). In fog computing, the computing is moved to processors linked to a local area network

Question 17

What are the pros and cons of the fog/edge computing?

Answer 17

Pros: high computational capacity, distributed computing, privacy and security, reduced latency in making a decision

Cons: require a power connection, require connection with the cloud

Question 18

How is the surroundings of a data center related to the choice of the place to host it?

Answer 18

The fact that this surroundings are empty, makes possible to the data center to expand

Question 19

What are some physical characteristics of the building that hosts the data center that are related to the optimization of the temperature

Answer 19

The fact that the servers are on the same floor and the color of the building

Question 20

When we talk about the limitations of the hardware features in a data center what does it means?

Answer 20

It means that the third-party that offers the service may not have a very broad variety of different computer architectures

Question 21

Explain the security problem in the cons of the data center

Answer 21

Since we store data abroad, we need to transfer it what may cause leaks