Data centers are facilities that house IT hardware, which include networking equipment, computing units, data storage equipment etc.

1. Data Centers The Pillars of
Digital Economy

2. Table of Contents
2
Data Center
Need for Data Centers
Main Components of a Data
Center
Data Center Operations
Tiers of Data Centers
Types of Data Centers
Different types of Data
Centers Explained

3.  A data center refers to any physical space (a building, a group of buildings, a building’s dedicated
space etc.) that is used to house an organization’s IT infrastructure, critical applications and
data. It has a network of computing and storage resources which are used to deliver shared
applications and data. Storage systems, servers, firewalls, routers, application-delivery controllers
are an essential part of any data center.
 Data centers serve the purpose of securing resources that have to do with information
technology along with ensuring the least amount of downtime.
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Data Center

4. The existence of data centers helps to achieve the following-
 Efficient storage and management of data
 Decrease in barriers with regard to internal operations
 Higher Margins
 Enhanced data security
 Centralized management that facilitates better decision making.
4
Need for Data Centers

5.  Network Infrastructure- It is meant to connect both physical and virtual servers, services of
the data center, storage etc. to the end users.
 Storage Infrastructure- It stores as well as manages data safely.
 Computing Resources-These resources (servers) enable processing of applications.
To digress, servers are used by web hosting companies as well. These servers store the data of
websites in order to make the websites accessible over the Internet. The best web hosting
companies are usually referred to with terms such as the “Best Website Hosting Company”, the
“BestWindows Hosting Company”, the “Best Linux Shared Hosting Company” etc.
5
Main Components of a Data Center

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7. Data center opertions consist of the workflows and the systems that enable a data center to run.
These include the following-
 Installing as well as maintaining network resources
 Monitoring systems that have to do with power and cooling
 Maintaining security of the data center
7
Data Center Operations

8. The four tiers of data centers are mentioned below-
 Tier 1: It is usually used by small-sized businesses. There are no assured built-in redundancies
in it for the purpose of ensuring optimal uptime. A tier 1 data center’s average downtime in a
year is 28.8 hours.
 Tier 2: Certain redundancies are introduced in it by the colocation provider. Moreover, partial
redundancies are usually built in for the purpose of ensuring the availability of power and
cooling for supporting operations. Its annual downtime is approximately 22 hours.
 Tier 3: It provides better protection against issues that have to do with power and cooling. A
tier 3 data center’s annual downtime is 1.6 hours. Such a data center makes use of N+1 fault
tolerenace.This ensures up to 72 hours of protection against a power outage.
 Tier 4: An annual uptime of 99.995% is provided by a tier 4 data center. Its annual downtime is
as low as 26.3 minutes which makes it a top choice for enterprises. A tier 4 data center has
2n+1 redundant infrastructure and it assures 96 hours of protection against a power outage.
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Tiers of Data Centers

9. The classification of data centers depends on certain factors, such as, the number of owner
organizations, computing and storage technologies that have been used, the way these data centers
fit into the topology of other data centers, their energy efficiency etc.
The four main types of data centers are mentioned below, in no particular order.
 Enterprise Data Centers
 Managed Services Data Centers
 Colocation Data Centers
 Cloud Data Centers
 These are described in the following slide.
9
Types of Data Centers

10. The above-mentioned types of data centers are explained below, in brief.
 Enterprise Data Centers- These data centers are owned, built and operated by enterprises
and are usually housed on a corporate campus.These are optimized for the end users.
 Managed Services Data Centers- This type of a data center is managed by a third party.
The business that uses it leases the required infrastructure rather than buying it.
 Colocation Data Centers- In this type of a data center, a business rents space in a data
center that is not owned by it and which is located off the business’ premises. Such a data
center hosts the infrastructure whereas the business provides and manages all the components
which include servers, firewalls etc.
 Cloud Data Centers- In this type of a data center, the applications and data are hosted by a
particular cloud services provider. It is an off-premise data center.

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Different types of Data Centers Explained

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