IT145 4C - Cloud Computing Basics (2)

​Cloud Computing basics (2)

​Objectives

​

1. ​Describe the functionalities of storage and database.

2. ​Describe database as a service in cloud computing, its advantage and disadvantage.

3. ​Identify client/server computing and its components.

​Applications

what฀does฀cloud฀computing฀actually฀do?฀

We฀have฀applications฀running฀on฀our฀laptops,฀servers,฀phones฀and฀the฀like.฀

Cloud฀computing฀either฀has฀them฀too฀or฀has฀the฀potential฀to฀bring฀them฀to฀you.

Cloud฀computing฀brings฀you฀applications,฀a฀way฀of฀viewing,฀manipulating,฀and฀sharing฀data. The฀most฀common฀are฀storage฀and฀database.​

Multiple Choice

Which component of cloud computing brings users viewing, manipulating, and sharing data?

• Applications

• Storage

• Internet

Storage

One฀of฀the฀uses฀for฀cloud฀computing฀is฀simply฀storage.

The฀ benefits฀are฀in฀line฀with฀the฀general฀benefits฀of฀cloud฀computing—if฀you฀lease฀storage฀space from฀a฀vendor,฀ you฀are฀not฀responsible฀to฀buy฀equipment,฀ pay฀to฀run฀it,฀ and฀pay฀to฀cool฀it. That’s฀all฀on฀the฀vendor.

But฀there฀are฀different฀options฀when฀it฀comes฀down฀to฀cloud฀storage.​

Multiple Choice

What type of technology is used generally for storage in cloud computing?

• Computers

• File Systems

• Database

Multiple Choice

What do cloud vendors provide for storage space?

• Equipments for storage

• Services to run the hardware

• Both

​Storage

Database

Databases​ are฀repositories฀for฀information with links within the information that help฀make฀the฀data฀searchable.​

Distributed฀databases,฀like฀Amazon’s฀SimpleDB,฀spread฀information among฀physically฀dispersed฀hardware.฀But฀to฀the฀client,฀the

information฀seems฀to฀be฀located฀in฀one฀place.

​Storage

Database

​The฀advantages฀of฀such฀a฀database฀include฀the฀following:

•฀  Improved฀availability฀ If฀there฀is฀a฀fault฀in฀one฀database฀system,฀it฀will฀only฀affect฀ one fragment of฀the฀information,฀not฀the฀entire฀database.

•฀  Improved฀performance฀ Data฀is฀located฀near฀the฀site฀with฀the฀greatest฀demand฀and฀ the database฀systems฀are฀parallelized,฀which฀allows฀the฀load฀to฀be฀balanced฀among฀ the฀servers.

•฀  Price฀ It฀is฀less฀expensive฀to฀create฀a฀network฀of฀smaller฀computers฀with฀the฀power฀ of one large one.

•฀  Flexibility฀ Systems฀can฀be฀changed฀and฀modified฀without฀harm฀to฀the฀entire฀ database.

Multiple Choice

Which is an advantage of databases?

• Complexity

• Price

• Integrity

​Storage

Database

​Naturally฀there฀are฀disadvantages,฀including

•฀  Complexity฀ Database฀administrators฀have฀extra฀work฀to฀do฀to฀maintain฀the฀ system.

•฀  Labor฀costs฀ With฀that฀added฀complexity฀comes฀the฀need฀for฀more฀workers฀on฀the฀ payroll.

•฀  Security฀ Database฀fragments฀must฀be฀secured฀and฀so฀must฀the฀sites฀housing฀the฀ fragments.

•฀  Integrity฀ It฀may฀be฀difficult฀to฀maintain฀the฀integrity฀of฀the฀database฀if฀it฀is฀too฀ complex or changes too฀quickly.

•฀  Standards฀ There฀are฀currently฀no฀standards฀to฀convert฀a฀centralized฀database฀into฀ a฀cloud฀solution.

Multiple Choice

Which is a disadvantage of databases?

• Need฀for฀more฀workers฀on the payroll.

• Extra฀work฀to฀do฀to฀maintain฀the฀ system

• Both

Multiple Choice

True or False: In a IaaS, the database is run on a shared hardware platform.

• True

• False

​Storage

Database services

Another฀“as฀a฀service”฀offering฀that฀is฀becoming฀prevalent฀in฀the฀world฀of cloud฀computing฀ is฀Database฀as฀a฀Service฀(DaaS).

The฀idea฀behind฀DaaS฀is฀to฀avoid฀the฀complexity฀and฀cost฀of฀ running฀your฀own฀database.

​

Open Ended

Why use a cloud database?

​Storage

Database services

​DaaS฀offers฀these฀benefits:

•฀  Ease฀of฀use฀ There฀are฀no฀servers฀to฀provision฀and฀no฀redundant฀systems฀to฀worry฀ about.฀You฀don’t฀have฀to฀worry฀about฀buying,฀installing,฀and฀maintaining฀hardware฀ for฀the฀database.

•฀  Power฀ The฀database฀isn’t฀housed฀locally,฀but฀that฀doesn’t฀mean฀that฀it฀is฀not฀ functional฀and฀effective.฀Depending฀on฀your฀vendor,฀you฀can฀get฀custom฀data฀ validation฀to฀ensure฀accurate฀information.฀You฀can฀create฀and฀manage฀the฀database฀ with฀ease.​

​Storage

Database services

​DaaS฀offers฀these฀benefits:

•฀ Integration฀ The฀database฀can฀be฀integrated฀with฀your฀other฀services฀to฀provide more value and power.฀For฀instance,฀you฀can฀tie฀it฀in฀with฀calendars,฀email,฀and฀ people฀to฀make฀your฀work฀more฀powerful.

•฀  Management฀ Because฀large฀databases฀benefit฀from฀constant฀pruning฀and฀ optimization, typically there฀are฀expensive฀resources฀dedicated฀to฀this฀task.฀With฀some฀DaaS฀offerings,฀this฀management฀canbe฀provided฀as฀part฀of฀the฀service฀for฀much฀less฀expense.฀The฀provider฀will฀often฀use฀offshore฀labor pools฀to฀take฀ advantage฀of฀lower฀labor฀costs฀there.

Open Ended

Describe Database-as-a-service (DaaS) in 1-2 sentences.

​Storage

Database services

There are number of ​providers, let's take a look at two of the biggest players.

MySQL

​ Oracle

​Storage

mysql

​In฀the฀spring฀of฀2008, Microsoft announced the cloud extension tool - introducing฀Microsoft฀SQL฀Server฀Data฀Services฀(SSDS).

SSDS฀looks฀very฀similar฀to฀Amazon’s฀SimpleDB,฀with฀a฀straightforward, schema-free฀ data฀storage,฀SOAP฀or฀REST฀APIs,฀and฀a฀pay-as-you-go฀payment฀system.

It฀is฀also฀able฀to฀ start฀small฀and฀scale฀larger฀as฀needed.​

​Storage

mysql

​There฀are฀three฀core฀concepts฀in฀SSDS:

•฀ Authority฀ An฀authority฀is฀both฀a฀billing฀unit฀and฀a฀collection฀of฀containers. •฀ Container฀ A container฀ is a collection of entities and is what you search within.

•฀ Entity฀ An฀entity฀is฀a฀property฀bag฀of฀name฀and฀value฀pairs.​

Multiple Choice

True or False: Microsoft SQL Server Data Service (SSDS) allows flexibility for small businesses to scale larger as needed and provides pay-as-you-go฀payment฀system.

• True

• False

​Storage

Oracle

In฀the฀fall฀of฀2008฀Oracle฀introduced฀three฀services฀to฀provide฀database฀services฀to฀cloud฀ users.฀Customers฀can฀license

•฀ Oracle฀Database฀11g

•฀ Oracle฀Fusion฀Middleware

•฀ Oracle฀Enterprise฀Manager

​Storage

Oracle

“Providing฀choice฀is฀the฀foundation฀of฀Oracle’s฀strategy฀to฀enable฀customers฀to฀become฀ more฀productive฀and฀lower฀their฀IT฀costs—whether it’s choice of hardware,฀operating฀ system,฀or฀on฀demand฀computing—extending this฀to฀the฀Cloud฀environment฀is฀a฀natural฀ evolution,”฀said฀Robert฀Shimp, Vice President of Oracle฀Global฀Technology฀Business฀Unit.

Multiple Choice

True or False: According to Robert Shimp, Oracle's strategy is to provide lower cost on their services for their customers.

• True

• False

​Intranets and the cloud

​INTRANETS AND THE CLOUD

In฀this฀section฀we’ll฀talk฀about฀the฀merits฀of฀developing฀your฀own฀in-house “cloud”฀and฀ what฀is฀used฀in฀its฀composition.

COMPONENTS

There฀are฀two฀main฀components฀in฀client/server฀computing:฀servers฀and฀thin฀or฀light฀clients.

​

The฀servers฀house฀the฀applications฀your฀organization฀needs฀to฀run,฀and the฀thin฀ clients—which฀do฀not฀have฀hard฀drives—display฀the฀results.

COMPONENTS

The฀network฀map฀in฀Figure฀1-5฀shows฀how฀they฀are฀deployed.

Open Ended

Describe client/server computing in 1-2 sentence/s.

​COMPONENTS

HYPERVISOR APPLICATIONS

Applications฀like฀VMware฀or฀Microsoft’s฀Hyper-V allow you to virtualize your servers so฀ that multiple virtual servers can run on one physical server.

These฀sorts฀of฀solutions฀provide฀the฀tools฀to฀supply฀a฀virtualized฀set฀of hardware฀to฀the฀ guest operating฀system. They฀also฀make฀it฀possible฀to฀install฀different฀operating฀systems฀on฀the same machine.

Multiple Choice

What infrastructure requires a hypervisor to make฀it฀possible฀for฀installation of฀different฀operating฀systems฀on฀the same machine?

• Virtualization

• Grid Computing

• Both

​Components

HYPERVISOR APPLICATIONS

A hypervisor is a process or a function to help admins isolate operating system and applications from the underlying hardware. Cloud computing uses it the most as it allows multiple guest operating systems (also known as virtual machines or VMs) to run simultaneously on a single host system.

Multiple Choice

True or False: A hypervisor allows฀you฀to฀virtualize฀your฀servers฀so฀ that฀multiple฀virtual฀servers฀can฀run฀on฀one฀physical฀server.

• True

• False

​- Larry Ellis, Chairman, Oracle

“Cloud Computing is not only the future of computing, but the present and the entire past of computing."

​End of presentation