Maqaalkeygii ugu dambeeyay^{(last article)} , waxaan isku dayay inaan si kooban kuugu soo bandhigo fikradda Cloud and Cloud computing Haddaba aan fahanno, waa maxay noocyada daruuraha^(Clouds) . Waxaan asal ahaan leenahay saddex nooc oo Darruur^(Clouds) ah, kuwaas oo kala ah, Daruuraha Dadweynaha^{(Public Clouds)} , Daruuraha Gaarka ah^{(Private Clouds)} , iyo Daruuraha Isku^{(Hybrid Clouds)} -dhafka ah.

Noocyada Xisaabinta Daruuraha

1] Daruuraha Dadweynaha

Daruurahani waa daruuraha u furan inay isticmaalaan dadweynuhu waxayna ka jiraan dab-damiska hay'ad, si buuxdana ay u martigaliyaan una maamulaan waratada sida Google , Amazon , Microsoft , iwm. Waxay si adag u raacaan qaabka " Pay as you go" Waxay ka caawisaa kuwa bilawga ah inay bilaabaan inay yareeyaan oo ay weynaadaan iyagoon wax badan gelin kaabayaasha IT-ga.

Halkan isticmaaluhu ma awoodo inuu maamulo agabka. Wax walba waxaa maamula dhinaca saddexaad waana mas'uuliyadooda inay dalbadaan cusboonaysiinta software-ka, balastarrada amniga, iwm.

In kasta oo ay aad waxtar u leeyihiin oo ay fududeeyaan dadaalka ururka maadaama wax walba ay horeba u jireen, haddana waxa ay la kulantaa dhaleecayn, gaar ahaan arrimaha la xidhiidha ammaanka.

2] Daruuraha gaarka ah

Kuwani waa noocyada daruuraha ee ka jira xuduudaha (firewall) ee ururka. Waxaa si buuxda u maamula shirkad waxayna leedahay dhammaan sifooyinka daruuraha Dadweynaha^{(Public Clouds)} oo leh farqi weyn oo ay tahay inay daryeesho kaabayaasha IT-ga hoose. Waxay aad u ammaan badan yihiin maadaama ay gudaha u yihiin hay'ad waxayna isku shaandheynayaan agabka iyadoo loo eegayo baahidooda ganacsi.

Waxay aad ugu habboon yihiin codsiyada la xidhiidha ammaanka adag oo ay raacaan siyaasado adag qaarkood ama waxaa loola jeedaa ujeeddooyin sharciyeed. Aad uma sahlana in urur uu la socdo Private Cloud sababtoo ah kakanaanta iyo maamulka ayaa waxaa badanaa isticmaala shirkado maalgashi badan ku sameeyay kaabayaasha IT-ga waxayna leeyihiin awood iyo karti ay ku maareeyaan.

3] Daruuraha Isku-dhafka ah

Waxay ka kooban yihiin bixiyeyaasha dibadda iyo gudaha, sida isku dhafka daruuraha dadweynaha iyo kuwa gaarka ah. Badbaadada^(Secure) iyo abka muhiimka ah waxa maamula urur iyo abka aan aad muhiimka u ahayn & abka ammaana leh ee iibiya qolo saddexaad. Waxay leeyihiin aqoonsi gaar ah, oo ku xidhan tignoolajiyada caadiga ah, sidaas darteed awood u siinaya xogta iyo qaadashada codsiga. Waxaa loo isticmaalaa xaaladaha sida Cloud Bursting.

Waddamada intooda badan , waxaan arki doonnaa maalgashi badan oo lagu sameeyo Cloud Hybrid^{(Hybrid Clouds)} tobanka sano ee soo socda, sababta fudud awgeed, shirkado badan ayaa ka shakisan Amniga^(Security) Cloud oo ay door bidaan in xogta muhiimka ah ay maamulaan iyaga iyo xogta aan muhiimka ahayn ee bixiyaha dibadda.

Marka laga eego dhinaca isticmaalaha ugu dambeeya, Daruuraha Dadweynaha^{(Public Clouds)} ayaa aad u xiiso badan iyaga, dhammaanteen waxaan isticmaalnaa adeegyada daruuraha dadweynaha sida Microsoft Office Web Apps , Google Docs , iwm; halka shirkadu ay xiiso u yeelan doonto daruuraha gaarka ah iyo kuwa isku dhafan. Waxaan u soo jeedin doonaa inay ka hubiyaan Microsoft Exchange onlayn, Share Point online, iwm.

Types of Clouds Computing

In my last article, I tried to briefly introduce you to the concept of Cloud and Cloud computing  Now let us understand, what are the types of Clouds. We basically have three types of Clouds, namely, Public Clouds, Private Clouds, and Hybrid Clouds.

Types of Clouds Computing

1] Public Clouds

These are the clouds that are open for use by the general public and they exist beyond the firewall of an organization, fully hosted and managed by vendors like Google, Amazon, Microsoft, etc. They strictly follow the “Pay as you go” model which helps startups to start small and go big without investing much in the IT infrastructure.

Here a user does not have control over the management of the resources. Everything is managed by the third party and it’s their responsibility to apply software updates, security patches, etc.

Though they are quite effective and eases an organization’s effort since everything is already there, it does face some criticism, esp on security-related issues.

2] Private Clouds

These are the types of clouds that exist within the boundaries (firewall) of an organization. It is totally managed by an enterprise and has all the features of Public Clouds with a major difference that it has to take care of the underlying IT infrastructure. They are more secure as they are internal to an organization and they shuffle resources according to their business needs.

They are best suited for the applications which are related to tight security and follow some stringent policies or are meant for regulatory purposes. It is not very easy for an organization to go with a Private Cloud due to its complexity and management so they are often used by enterprises who have made huge investments in their IT infrastructure and have the manpower and abilities to manage it.

3] Hybrid Clouds

They consist of external and internal providers, viz a mix of public and private clouds. Secure & critical apps are managed by an organization and the not-so-critical & secure apps by the third-party vendor. They have a unique identity, bound by standard technology, thus enabling data and application portability. They are used in situations like Cloud Bursting.

In most countries, we are going to see a lot of investment in the Hybrid Clouds in the next decade, for the simple reason, that lot of companies are skeptical about the Cloud’s Security and they prefer that the critical data be managed by themselves and the non-critical data by the external provider.

From an end-user perspective, Public Clouds will be more interesting for them, we all use public cloud services like Microsoft Office Web Apps, Google Docs, etc; whereas an enterprise will be having an interest in private & hybrid clouds. I will suggest they check Microsoft Exchange online, Share Point online, etc for this.

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