Prema istraživanju koje je proveo Tech Pro Research , 68% ljudi koji koriste internet zna što je hibridni oblak^{(Hybrid Cloud)} . Međutim, veličina uzorka bila je samo 138 i činila je ljude zainteresirane za područje informacijske tehnologije^{(Information Technology)} . Nisam sklon složiti se da 65% IT ljudi razumije hibridne oblake jer većina njih tek treba razumjeti sve koncepte i činjenice računalstva u oblaku^{(cloud computing)} (kada uzmemo u obzir IT ljude iz cijelog svijeta). U mnogim zemljama poslovne kuće ne koriste računalstvo u oblaku zbog jednog ili više razloga. Jedan od primarnih razloga je nedostatak povjerenja u javne oblake.

Vjerojatno pojedinci u takvim zemljama razumiju računalstvo u oblaku i koriste ga ( OneDrive , Google Drive , itd.). Ali Amazon , Azure itd. gotovo da ne nalaze pretplatnike iz takvih zemalja. razlog^(Reason) ? Nedostatak^(Lack) pravilnog razumijevanja koncepta računalstva u oblaku i opet strah od krađe podataka i gubitka podataka.

Što je hibridni oblak

Postoje javni i privatni oblaci. Između njih dvoje nalazi se hibridni^(Hybrid) oblak.

OneDrive , Google Drive itd. su javni oblaci u kojima ljudi dijele iste poslužitelje. Posebnost oblaka je da može povećati i smanjiti uslugu po potrebi. Isto vrijedi i za oblake Azure , Amazon i Ubuntu . Složit ćete se da su OneDrive i Google Drive (i slični servisi za pohranu poput Mozyja^(Mozy) ) itd. popularniji jer odgovaraju i poslovnim kućama i pojedincima. Cijeli moj Office pohranjen je na OneDrive . Koristim ga od vremena kada je Microsoft nudio nevjerojatnih 25 GB besplatno pod imenom SkyDrive .Stoga^(Thus) mu mogu pristupiti iz bilo kojeg dijela svijeta.

U svakom slučaju, vraćajući se na ono što je hibridni oblak^(Cloud) , prvo moramo razumjeti javne i privatne oblake. Oblaci koje vidite u obliku OneDrive , Google Drive , Canonical itd. najpopularniji su javni oblaci. Nazivaju se javnim jer se podaci pohranjuju na istim poslužiteljima bez obzira na to gdje osoba živi ili što pohranjuje. Postoji zabrinutost može li davatelj usluga pregledati podatke koji se pohranjuju (što je opet odvraćanje od korištenja oblaka).

Drugim riječima,

1. Uslugu u oblaku svatko može koristiti jednostavno registracijom za uslugu
2. Usluga u oblaku može se proširiti i smanjiti jednostavnom promjenom planova
3. Zauzeti prostor^(Space) osigurava se i oslobađa u stvarnom vremenu na oblacima
4. Nema ili je minimalna ručna intervencija
5. Osim ako je drugačije navedeno u T&C-u, davatelj usluga u oblaku ne može pregledavati podatke koje pohranjuju korisnici. Ako to učini, to će biti kategorizirano kao povreda povjerenja.

Međutim, gledajući posljednju točku, vladina pravila mogu prisiliti pružatelja usluga u oblaku da dostavi podatke o klijentu saveznim agencijama ili drugima povezanim s njim – bez znanja korisnika. Stoga, kršenje faktora podataka nije izvedivo provesti.

Privatni oblaci^{(Private clouds)} sigurniji su kada je u pitanju pohrana podataka. Imajte^(Please) na umu da sam koristio pohranu podataka kao primjer jer je lakše razumjeti. Računalstvo u oblaku^(Cloud) , kao takvo, može biti bilo što, od pohrane podataka do pružanja platforme kao usluge na kojoj korisnici ne samo da mogu kreirati svoje programe već ih testirati pod različitim uvjetima.

Ali implementacija privatnog oblaka je kompliciran proces. Trebat će vam dodatni poslužitelji i to je samo početak. Potrebni su vam IT administratori koji razumiju koncepte i značajke oblaka. Tada bi vam trebali programeri koji mogu stvarati i održavati softver gdje je ljudsko uplitanje zanemarivo. Zatim bi oblak trebao biti dostupan svim granama organizacije. Konačno, morate se pobrinuti za hakere itd. i učiniti oblak što je moguće otpornijim na hakere.

Kako bi izbjegli sve te komplikacije, organizacije imaju tendenciju koristiti hibridne oblake. Odnosno, neki se procesi organizacije izvode u privatnom oblaku dok se drugi izvode na kompliciranim oblacima kao što je Azure .

Definicija hibridnog oblaka

Ne postoji čvrsta definicija hibridnih oblaka. Zapravo, ne postoji čvrsta definicija za računalstvo u oblaku. Postoje različita objašnjenja koja govore o kriterijima računalstva u oblaku. I ovi kriteriji također se razlikuju ovisno o perspektivi korisnika. U svakom slučaju^(Anyway) , pokušat ću definirati hibridni oblak na sljedeći način:

“Any cloud computing service that employs use of both public and private clouds is known as hybrid cloud”.

Nadalje, postavlja se pitanje zašto hibridni^(Hybrid) oblak. Gore smo govorili o privatnom oblaku i otkrili da je vrlo kompliciran. Hibridni oblak pokreće jednostavne procese u vlastitom privatnom oblaku i koristi javne oblake za komplicirane procese. Na taj način smanjujete ne samo troškove nego i razne komplikacije koje mogu ometati ili odgoditi vaše poslovne procese.

Iako možete sami izgraditi privatni oblak (za korištenje s hibridnim^(Hybrid) oblakom), mnoge tvrtke (kao što je IBM ) osiguravaju vlastite inženjere za pojednostavljenje vašeg privatnog oblaka s javnim oblakom. To opet štedi na troškovima, a istovremeno vas oslobađa od traženja odgovarajućeg znanja za postavljanje vašeg privatnog oblaka koji se koristi u sprezi s bilo kojim javnim oblakom.

da sumiramo:

1. Hibridni^(Hybrid) oblaci koriste i privatne i javne oblake
2. Hibridni^(Hybrid) oblaci koriste lokalni oblak koji se koristi s javnim oblacima kako bi se izbjegli veliki troškovi programiranja i održavanja
3. Hibridni^(Hybrid) oblaci nude bolju, pouzdanu sigurnost za podatke i procese jer se komplicirani podaci obrađuju na sigurnim javnim oblacima (iako su mnogi ljudi još uvijek skeptični u vezi s tim aspektom)

Jedini problem s oblacima je taj što se zakonska pravila razlikuju od zemlje do zemlje. U slučaju računalstva u oblaku, ako dođe do bilo kakvog spora, primjenjuju se pravila područja gdje su davatelji usluga registrirali svoju uslugu. Zbog toga Microsoft naglašava univerzalizaciju pravnih pravila i propisa diljem svijeta. Bilo bi lakše i davateljima usluga i klijentima ako se to postigne.

Prednosti i prednosti hibridnih oblaka^{(Hybrid Clouds)}

1. On-premise infrastruktura
2. Nema kašnjenja zbog internetskog prometa
3. Brže vrijeme obrade jer se neki podaci obrađuju lokalno i time štedite vrijeme u usporedbi sa svim podacima koji se obrađuju u oblaku. Morate prenijeti podatke i preuzeti rezultate. Treba vremena
4. Komplicirani procesi izvode se u javnom oblaku pa se štede troškovi i upravljanje infrastrukturom
5. Možete koristiti privatni oblak tijekom cijele godine i proširiti upotrebu javnog oblaka prema potrebi, umjesto izgradnje ili proširenja lokalne infrastrukture.

Reference^(References)

TechPrResearch.com Anketa^{(TechPrResearch.com Survey)} o hibridnim oblacima^{(Hybrid Clouds)} .

Možda biste željeli pogledati i ove poveznice:^{(You might want to have a look at these link too:)}

1. Vrste usluga u oblaku i Microsoft Cloud
2. Javni oblak naspram privatnog oblaka^{(Public Cloud vs Private Cloud)}
3. Budućnost računalstva u oblaku
4. Sigurnosni problemi s računalstvom u oblaku
5. Razlika između računalstva u oblaku i grid računalstva^{(Difference between Cloud computing and Grid computing)} .

What is Hybrid Cloud? Defination, advantages and benefits

According to a surνey conducted by Teсh Pro Research, 68% of people using the Internet know what a Hybrid Cloud is. However, the sample size was just 138 and constituted people interested in the Information Technology field.  I am not inclined to agree that 65% of IT people understand hybrid clouds because most of them are yet to understand all the concepts and facts of cloud computing (when we consider IT people all from over the world). In many countries, business houses do not go for cloud computing due to one or more reasons. One of the primary reasons is the lack of trust in public clouds.

Probably, individuals in such countries understand cloud computing and use it too (OneDrive, Google Drive, etc.). But Amazon, Azure, etc. find almost no subscribers from such countries. Reason? Lack of proper understanding of cloud computing concepts and again, fear of data being stolen and loss of data.

What is Hybrid Cloud

There are public clouds and there are private clouds. In between the two, lies the Hybrid cloud.

OneDrive, Google Drive, etc. are public clouds where people share the same servers. The specialty of the cloud is that it can increase and decrease the service as and when needed. The same applies to Azure, Amazon, and Ubuntu clouds. You will agree that OneDrive and Google Drive (and similar storage services like Mozy) etc. are more popular as they fit for both business houses and individuals. My entire Office is stored on OneDrive. I am using it since the time Microsoft was offering a whopping 25GB for free under the SkyDrive name. Thus, I can access it from any part of the world.

Anyway, coming back to what is Hybrid Cloud, we have to first understand public and private clouds. The clouds that you see in the form of OneDrive, Google Drive, Canonical, etc. are the most popular public clouds. They are called public because data is stored on the same servers irrespective of where the person lives or what he or she is storing. There are concerns if the service provider can look into the data being stored (which is again a deterrent for cloud usage).

In other words,

1. The cloud service can be used by anyone simply by signing up for the service
2. The cloud service can be expanded and reduced simply by changing plans
3. Space occupied is provided and released in real-time on the clouds
4. There is no or minimal manual intervention
5. Unless otherwise stated in T&C, the cloud service provider cannot look into the data being stored by the users. If he does, it will be categorized as a breach of trust.

However, looking at the last point, government rules can coerce the cloud provider to provide data about a client to the federal agencies or others related to it – without the knowledge of the user. Thus, the breach of data factor is not feasible to implement.

Private clouds are safer when it comes to storing data. Please note that I’ve been using the storage of data as an example as it is easier to understand. Cloud computing, as such, can be anything from storage of data to providing a platform as a service where users can not only create their programs but test them under different conditions.

But implementing a private cloud is a complicated process. You’ll need additional servers and that is just the beginning. You need IT admins who understand the concepts and features of the cloud. Then you would need programmers who can create and maintain software where human interference is negligible. Then, the cloud should be made accessible to all the branches of the organization. Finally, you have to take care of hackers, etc. and make the cloud as hacker-proof as possible.

To avoid all these complications, organizations tend to use hybrid clouds. That is, some of the processes of the organization run on the private cloud while others run on complicated clouds such as Azure.

Hybrid Cloud definition

There is no solid definition for hybrid clouds. Actually, there is no solid definition for cloud computing. There are different explanations that talk about the criteria of cloud computing. And these criteria too, vary based upon the perspectives of users. Anyway, I will try to define a hybrid cloud as follows:

“Any cloud computing service that employs use of both public and private clouds is known as hybrid cloud”.

Further, the question arises as to why the Hybrid cloud. We talked about the private cloud above and found that it is very complicated. A hybrid cloud runs simple processes on own private cloud and uses public clouds for complicated processes. That way, you cut down on not only expenses but also on different complications that may hinder or delay your business processes.

While you can build a private cloud (for use with a Hybrid cloud) on your own, many companies (such as IBM) provide their own engineers to streamline your private cloud with the public cloud. That again saves on expenses while relieving you from hunting for proper know-how to set up your private cloud that is used in conjunction with any public cloud.

To sum up:

1. Hybrid clouds use both private and public clouds
2. Hybrid clouds employ an on-premise cloud which is used with public clouds to avoid heavy expenses on programming and maintenance
3. Hybrid clouds offer better, reliable safety to data and processes as the complicated data is processed on safe public clouds (though many people are still skeptical about this aspect)

The only problem with clouds is that the legal rules vary across countries. In the case of cloud computing, if any dispute arises, the rules of the area where the service providers registered their service, apply. This is why Microsoft stresses on the universalization of legal rules and regulations across the globe. It would make it easier for both service providers and clients if that is achieved.

Benefits and advantages of Hybrid Clouds

1. On-premise infrastructure
2. No latency due to internet traffic
3. Faster processing time as some data is processed locally and thus you save time when compared to all data processed on the cloud. You have to upload data and download results. It takes time
4. Complicated processes run on the public cloud so saves expenses and management of infrastructure
5. You can use a private cloud all the year and extend your public cloud usage as and when required, instead of building or extending on-premises infrastructure.

References

TechPrResearch.com Survey on Hybrid Clouds.

You might want to have a look at these link too:

1. Types of Cloud services & Microsoft Cloud
2. Public Cloud vs Private Cloud
3. The Future Of Cloud Computing
4. Security issues with Cloud computing
5. Difference between Cloud computing and Grid computing.

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