Introduction to Cloud Storage Services
Singh Verma1, Lokesh Kumar Sahu2
in Electronics and Photonics, Pt. Ravishankar Shukla University Raipur (C.G.)
computing has become one of the hottest technologies of the emerging 21st
century technology, Cloud computing is related to a variety of themes that take
on a larger dimension of mainstream media, there are various cloud computing
books have also been available on shelves in recent years. The Internet makes
the world more accessible. Cloud storage is an important infrastructure for
achieving seamless data sharing and experience of service communications from
different users, different applications, different devices around the world. It
will be a new public infrastructure service, such as water, electricity,
available anytime, anywhere. Cloud is not a specific product, but a way to
deliver IT services that can be used when needed, expand up and down as needed,
and follow a usage model. Cloud computing is a computer style in which computer
resources are easily accessible and accessible, easy to use, cheap, and just
working. Cloud is not a point product or a single technology, but a way to
deliver IT services in a way that provides self-sufficiency, demand and use for
each payment. By making data available in the cloud, easily accessible and
ubiquitous, usually at much lower costs, increase their value by enabling
opportunities for improved collaboration, integration, and analysis on a common
storage, Cloud computing, Internet, Cloud storage models.
many decades there is continuous progress in field of computer but for the last
two decades the computer revolution has been developing faster than ever. At
50’s a 5 MB Hard drive has a size of almost two refrigerators. Then it's
shrinks to A floppy discs, CD ROM, DVD, Pen drive and semiconductor chips. But
today we don't like to carry any chip or hard drive too around with us as a
storage device. We want to save our
data at a place so that we don't have to carry any physical storage,
That's why we need Cloud storage. Cloud storage is a part of Cloud Computing.
Cloud Computing is a remote server which store, manage and process the data
rather than local server. The idea of Cloud storage comes in the time of 60’s.
In 1960 Jon Mc Carthy first introduce Mainframe Time Sharing, after that in
1969 J.C.R. Licklider invented the APRANET (Advanced research projects agency
network) ,till 1970 a software was
developed for virtualization. First commercially cloud storage service Elastic
Compute Cloud (ECC) was launched by Amazon, Google has also launched its own
cloud storage service in 2008. Today there are lots of providers which are
providing cloud storages.
Cloud Storage :
“Cloud storage is a service that store our data remotely and made it
available to us anywhere anytime via internet.” In today's time when there is
constant increase in people's personal and organizational data, Cloud storage
is capable to store these data because of scalability. People can run or access
their program anywhere, anytime in any device through internet by using Cloud storage.
So far, Google, Microsoft, IBM, Amazon and other popular companies have
upgraded their cloud computing system, and installed it. Cloud computing as one
of the most important strategies in the future.
The definition of cloud computing can be define back to 1961. The
famous American computer scientist Turing Award winner John McCarthy put the
concept of cloud computing. However that computer power can be used by users
such as water, electricity, gas or other community app. For a long time,
however, this idea remained only in the dream stage. Until the beginning of In
the 21st century, this idea has been well-known for technological advances and
the maturity of application and 2010 is the first year of the real era of clouds.
How it work:
To study the working of cloud storage we must understand the
following two architectures –
Virtualization architecture of
It is made up of three part a. Front side b. Storage logic c. End
Front side is a link that connect the user to the main server using internet as
they required (Public, Private or Hybrid N//W).
Storage logic create pools for storing the data, it copies the data and send them
to different locations. When user want get back their data it provide them from
fastest N/W rather than slow N/W.
End side is the physical storage which stores the data in different locations.
These physical storage are called Data centres. All the cloud data stored in
Data centres in multiple copies so there
is no risk of losing data. Thus by using these
blocks process of cloud storage
– General architecture of Cloud storage
Virtualization architecture –
is a process that allow to share single physical resources to multiple users.
It is called multitenant architecture also. Main server of cloud providers
consist of large number of Processors, RAM, ROM and N/W capacity, this main
server is called host server. We use the virtualization software in the server
like Hypervisor which provides n numbers of virtual machines according to the
requirement of the users by using main
server. Hypervisor is use like a Virtualization machine monitor also. Today we
have many virtualization software in place of Hypervisor. Virtualization made
cloud storage more reliable.
Service model of Cloud storage:
to providing services of the cloud
storage we can divide it to following categories a. Infrastructure as a service
(IaaS) b. Platform as a service (PaaS) c.
Software as a service (SaaS). An example made it easy to study these categories
we all work different software in our devices we can’t make change on it we can
only use it so it is SaaS, Some people create their own website with the help
of Google engine by using their platform and tools it is PaaS, and if any one
is creating his own website and he manage O/S, data storage and other control
he use only infrastructure from provider so it is IaaS.
a service (IaaS):
this service user use only infrastructure from providers and took the other
controls himself. Physical data storage , designing, programming languages,
operating system and security issues controlled by the user it is called IaaS.
Platform as a
this service user get only virtual storage to work , no any controls on the
physical data storage , security issues. User use the toos provided by the
provider there is no need to buy any tools from the other resources. In this
service user get a platform to work so it is called Paas.
Software as a
is no any control to the user on the cloud data , user can only use the cloud
data. It is called SaaS because we don’t need to install these software in our
device. When we need to use it we can use it by using internet.
of Cloud storage:
this model cloud storage can be categories as follow a. Public cloud b. Private
cloud c. Hybrid cloud.
Public cloud is open
for all to use. We can share it to any one via internet. It is pay per use
service.It is cost efficient. Only one drawback is here that it is not high
security efficient. Example of Public cloud is Google App engine etc.
Private cloud is
used for any organization or institute where high security efficiency is
needed. It share to only their organizational servers, not to all. But is not
cost efficient because of its high security services. Example of Private cloud
is Amazon private cloud, Microsoft private cloud.
is a combination of Public and Private cloud which is high security efficient
and cost efficient both.
Merits of the
Merits are as follow
access anywhere, anytime using internet.
energy consumption etc.
one limitations is there that it requires high speed data connection without it
,cloud storage can’t work.
storage is a great invention it make our devices more portable and solve the
problem of data managing. Use of cloud storage is increasing exponentially. We
know that cloud storage is a less power consumer rather than it 1% of world
wide electricity is used in data centres. Continuous progress is going on in
this field, in future there will be no any physical storage in our device only
cloud data will be use.
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