ASSIGNMENT
NAME – Sneh Nandu
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Q1)What is Cloud Computing?How you build cloud infrastructure
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Ans 1:i
Amodelfor enablingubiquitous,convenient,on-demandnetworkaccesstoa shared
pool of configurable computing resources (e.g., servers, storage, networks,
applications, and services) that can be rapidly provisioned and releasedwith
minimal managementeffortorserviceprovider interaction.
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• Essential CloudCharacteristics
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 On-demand self-service
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 Broad network access
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 Resource pooling
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 Rapid elasticity
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 Measured service
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Infrastructure should meet essential Cloud characteristics
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• Building Cloud infrastructure isa journey in phased approach:
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1. Understand your existing infrastructure
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2. Virtualize yourinfrastructure
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a) Virtualization iis ia itechnique iof iabstracting iphysical iresources iand
imaking ithem iappear ias ilogical iresources
b) Virtualization imay ibe iimplemented iat icompute, istorage, inetwork,
iand/or iapplication ilayers
c) Refers ito ias ia iVirtualized iData iCenter i(VDC)
3. Deploy servicemanagement tools todeliver Cloudservice
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a) Service iManagement itools ihelp ito icreate iand ideliver iCloud iservices
b) Enables iMetering iof iresourceiusage
c) Manages iof iphysical iand ivirtual iresources
Q2)Discuss the steps involved in transitioning from CDC to cloud?
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Ans 2:i
The Steps involved in transitioning from CDC to Clouds are as follows:i
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1. Defineitheiworkloadi:
An iapplication iworkload icomprises iall iof ithe icomponents irequired ifor ithe iproper
iperformance iof ian iapplication. iAs ihybrid iemerges ias ithe ikey icloud imodel, iit’s iincreasingly
iuncommon ifor ibusinesses ito irun isingle ipurpose, icustom-built iapplications ilike iZynga iand
iNetflix ido. iRather, ithey iuse ia icombination iof ioff-the-shelf iapplications ilike iOracle iand iSAP,
iwhich imeans itheir iapplications iusually iinteract iwith ione ianother iacross iplatforms
2. Provision iCloudiResources:
Servers, istorage iand inetwork iare irequired iservices ifor icloud ienvironments, iand iservice
iproviders ican ihelp ienterprises ipurchase ithese irequired iamenities
3. Establish a connectivity bridge:
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The iconnectivity ibridge iis ithe isecure iand itransparent ibi-directional iconnectivity ibetween
ithe idata icenter iand ithe icloud, iwhich iis iessential ifor ienabling icloud iaccess. iMost ienterprises
iemploy iInternet iVPNs ifor iconnectivity ito ithe icloud.
4. Deploy itheiworkload:
Once ithe iconnectivity ibridge iis iin iplace, ibusinesses ican isetup itheir ivirtual imachines iand
iconnect ithem ito iapplications ithat iremain iin-house. iThen, ienterprises ican itransfer
iapplications iand iany iassociated idatabases, isoftware iand iservices ithat ithey iestablished ifrom
iStep i2 ias ientrants ifor icloud imigration.
5. Ensure seamless two-way access:
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Critical ito ithe isuccess iof iany icloud imigration iis ismooth iintegration ibetween ithe icloud
iworkload iand ithe iservices inot imigrated, iwhich iremain ion ipremise. iWith ithe ihybrid imodel
iemerging ias ithe idominant icloud ienvironment ifor ienterprises, iIT iwill ihave iadditional
iconsiderations, iincluding iconnecting imultiple icloud ienvironments ias iwell ias imanaging
ienterprise-user idevices ithat iaccess iapplications iin ithe ihybrid ienvironment
6. Test iandiValidate:
To iensure iapplications iwill iperform ias irequired iit’s iimportant ito iconduct ia itrial iperiod
ibefore ilaunch. iBusinesses ishould iensure ithe iapplication ican irecover ifrom ifailure
iand itest iall ithird-party icomponents.
7. Discontinueitheioldiservice:
Once ienterprises ihave iidentified iand iamended iany iperformance iglitches, ithey ican ithen
iterminate ithe ienterprises iservices iand igive iall iof ithe iusers icloud iaccess iinstead.
Q3) iDefine iessential icloud icharacteristics?
Ans 3:i
The essential cloud computing characteristics are:
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1) On demand self service:
A consumer can unilaterally provision computing capabilities, such as server
time and network storage, as needed automatically without requiring human
interaction with each service provider.
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2) Broad NetworkAccess:
Capabilities are available over the network and accessed through standard
mechanisms that promote use by heterogeneous thin or thick client
platforms
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3) ResourcePooling:
The provider’s computing resources are pooled to serve multiple consumers
using a multi-tenant model, with different physical and virtual resources
dynamically assigned and reassigned according to consumer demand. There
is a sense of location independence in that the customer generally has no
control or knowledge over the exact location of the provided resources but
may be able to specify location at a higher level of abstraction
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4) Rapid Elasticity:
Capabilities can be elastically provisioned and released, in some cases
automatically, to scale rapidly outward and inward commensurate with
demand. To the consumer, the capabilities available for provisioning often
appear to be unlimited and can be appropriated in any quantity at any time.
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5) Measuredservice:
Cloud systems automatically control and optimize resource use by leveraging
a metering capability at some level of abstraction appropriate to the type of
service. Resource usage can be monitored, controlled, and reported,
providing transparency for both the provider and consumer of the utilized
service.
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Q4)Discuss Classic Data Centre?
Ans 4:i
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A CDC is a facility containing physical IT resources including compute, network,
and storage
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The core elements of a CDC include compute (server), storage, network,
application, and DBMS.
• Application: An application is a computer program that provides the logic
for computing operations. Applications may use a DBMS, which uses
operating system services to perform store/retrieve operations on
storage devices.
• DBMS: DBMS provides a structured way to store data in logically organized
tables that are interrelated. A DBMS optimizes the storage and retrieval
ofdata.
• Compute: Compute is a physical computing machine that runs operating
systems, applications, anddatabases.
Storage: Storage refers to a device that stores data persistently for
subsequent use.
• Network: Network is a data path that facilitates communication between
clients and compute systems or between compute systems and storage.
• These core elements are typically viewed and managed as separate
entities. But, all these elements must work together to address data
processing requirements. Other elements of a CDC are power supplies and
environmental controls, such as air conditioning and fire suppression.
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Key requirements of Data Centre:
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a)
b)
c)
d)
e)
f)
Data integrity
Availability
Performance
Security
Scalability
Flexibility
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