The document discusses cloud storage, including what it is, how it works, different types of cloud storage models like public, private, community and hybrid clouds, advantages like accessibility and cost savings, disadvantages like reliance on internet and data security issues, and concludes that while cloud computing activities are not new, mainstream adoption could cause problems for users so some prefer open source local systems.

1. SANJAY GHODAWAT UNIVERSITY, KOLHAPUR
DEPARTMENT OF CIVIL ENGINEERING
SEMINAR ON
CLOUD STORAGE
BY
RUTURAJ SANDEEPRAO JADHAV (19ST113252022)
Under the Guidance of
Prof A. A. HOSURKAR

2. Introduction
Cloud Storage is a model of data storage in which the digital data is stored in logical pools, the
physical storage spans multiple servers (and often locations), and the physical environment is typically
owned and managed by a hosting company. These cloud storage providers are responsible for keeping
the data available and accessible, and the physical environment protected and running.

3. What is Cloud Storage?
Cloud Storage is technology that allows us to save files in storage, and then access
those files via the Cloud. Let's break down this definition. First, storage is the computer's
ability to save files and other resources for later use. When you restart a computer, the files
that are still available after the computer turns back on are saved and read from storage. Such
storage commonly consists of a hard drive, a USB Flash drive, or another type of drive.

4. How Cloud Storage Works?
Cloud storage is saving data to an off-site storage
system maintained by a third party. Rather than storing
information to your computer’s hard drive or other local
storage device, you save it to a remote database.
The Internet provides the connection between your
computer and the database.

5. Cloud Storage Architecture

6. Cloud Computing Reference Architecture
1.Cloud Consumer
The cloud consumer is the principal stakeholder for the cloud computing service. A cloud
consumer represents a person or organization that maintains a business relationship with, and uses the service
from a cloud provider. A cloud consumer browses the service catalog from a cloud provider, requests the
appropriate service, sets up service contracts with the cloud provider, and uses the service. The cloud
consumer may be billed for the service provisioned, and needs to arrange payments accordingly. A cloud
provider may also list in the SLAs a set of promises explicitly not made to consumers, i.e. limitations, and
obligations that cloud consumers must accept. A cloud consumer can freely choose a cloud provider with better
pricing and more favorable terms.

7. 2. Cloud Provider
A cloud provider is a person, an organization; it is the entity responsible for making a service
available to interested parties. A Cloud Provider acquires and manages the computing infrastructure required
for providing the services, runs the cloud software that provides the services, and makes arrangement to deliver
the cloud services to the Cloud Consumers through network access. For Software as a Service, the cloud
provider deploys, configures, maintains and updates the operation of the software applications on a cloud
infrastructure so that the services are provisioned at the expected service levels to cloud consumers.

8. 3. Cloud Auditor
A cloud auditor is a party that can perform an independent examination of cloud service controls with the intent to express
an opinion thereon. Audits are performed to verify conformance to standards through review of objective evidence. A
cloud auditor can evaluate the services provided by a cloud provider in terms of security controls, privacy impact,
performance, etc. For security auditing, a cloud auditor can make an assessment of the security controls in the
information system to determine the extent to which the controls are implemented correctly, operating as intended, and
producing the desired outcome with respect to the security requirements for the system.

9. 4. Cloud Broker
As cloud computing evolves, the integration of cloud services can be too complex for cloud
consumers to manage. A cloud consumer may request cloud services from a cloud broker, instead of
contacting a cloud provider directly. A cloud broker is an entity that manages the use, performance and delivery
of cloud services and negotiates relationships between cloud providers and cloud consumers. In general, a
cloud broker can provide services in three categories [9]: Service Intermediation: A cloud broker enhances a
given service by improving some specific capability and providing value-added services to cloud consumers.

10. 5. Cloud Carrier
A cloud carrier acts as an intermediary that provides connectivity and transport of cloud services between cloud
consumers and cloud providers. Cloud carriers provide access to consumers through network,
telecommunication and other access devices.

11. Types of Cloud Storage
There are four main types of cloud storage —
1. Public cloud
2. Private cloud
3. Community cloud
4. Hybrid cloud

12. Public Cloud
Public cloud storage is where the
enterprise and storage service
provider are separate and there
aren't any cloud resources stored in
the enterprise's data center.
The cloud storage provider fully
manages the enterprise's
public cloud storage.

13. Private Cloud
Companies that look for cost efficiency
and greater control over data & resources
will find the private cloud a more suitable choice.
The private cloud offers bigger opportunities that help
meet specific organizations' requirements when it
comes to customization.

14. Community Cloud
The community cloud operates in a way
that is similar to the public cloud.
There's just one difference - it allows access
to only a specific set of users who share
common objectives and use cases. This
type of deployment model of cloud computing
is managed and hosted internally or by a third-party vendor.

15. Hybrid Cloud
A hybrid cloud or cloud bursting is a combination of two or more cloud architectures. While
each model in the hybrid cloud functions differently, it is all part of the same architecture. Further, as
part of this deployment of the cloud computing model, the internal or external providers can offer
resources.A company with critical data will prefer storing on a private cloud, while less sensitive data
can be stored on a public cloud.

16. Risks of Cloud Storage
1. Requires high speed internet connection most of the time.
2. Data is stored on third party servers.
3. When a provider closes its service for maintenance,
4. You may find it troublesome to access your data.If your provider closes its service
permanently, you may lose you valuable data.
5. Premium services cost you a considerable amount for the storage volume

17. Advantages of Cloud Storage
1. Usability: All cloud storage services reviewed in this topic have desktop folders for Mac’s and PC’s.
This allows users to drag and drop files between the cloud storage and their local storage.
2. Bandwidth: You can avoid emailing files to individuals and instead send a web link to recipients through
your email.
3. Accessibility: Stored files can be accessed from anywhere via Internet connection.
4. Disaster Recovery: It is highly recommended that businesses have an emergency backup plan
ready in the case of an emergency. Cloud storage can be used as a back‐up plan by businesses by
providing a second copy of important files.
5. Cost Savings: Businesses and organizations can often reduce annual operating costs by using cloud
storage; cloud storage costs about 3 cents per gigabyte to store data internally.

18. Disadvantages of Cloud Storage
1. Usability: Be careful when using drag/drop to move a document into the cloud storage folder. This will
permanently move your document from its original folder to the cloud storage location.
2. Bandwidth: Several cloud storage services have a specific bandwidth allowance.
3. Accessibility: If you have no internet connection, you have no access to your data.
4. Data Security: There are concerns with the safety and privacy of important data stored remotely. The possibility
of private data commingling with other organizations makes some businesses uneasy.
5. Software: If you want to be able to manipulate your files locally through multiple devices, you’ll need to download
the service on all devices.

19. Conclusion
1. Many of the activities loosely grouped together under cloud computing have already
been happening and centralised computing activity is not a new phenomena.
2. Grid Computing was the last research-led centralised approach.
3. However there are concerns that the mainstream adoption of cloud computing could
cause many problems for users.
4. Many new open source systems appearing that you can install and run on your local
cluster

20. References
1. www.google.com
2. www.wikipedia.org
3. www.studymafia.org
4. www.pptplanet.com