Category: cloud Computing

Hybrid Cloud Model ”; Previous Next Hybrid Cloud is a mixture of public and private cloud. Non-critical activities are performed using public cloud while the critical activities are performed using private cloud. The Hybrid Cloud Model is shown in the diagram below. Benefits There are many benefits of deploying cloud as hybrid cloud model. The following diagram shows some of those benefits: Scalability It offers features of both, the public cloud scalability and the private cloud scalability. Flexibility It offers secure resources and scalable public resources. Cost Efficiency Public clouds are more cost effective than private ones. Therefore, hybrid clouds can be cost saving. Security The private cloud in hybrid cloud ensures higher degree of security. Disadvantages Networking Issues Networking becomes complex due to presence of private and public cloud. Security Compliance It is necessary to ensure that cloud services are compliant with security policies of the organization. Infrastructure Dependency The hybrid cloud model is dependent on internal IT infrastructure, therefore it is necessary to ensure redundancy across data centers. Print Page Previous Next Advertisements ”;

Cloud Computing Infrastructure ”; Previous Next Cloud infrastructure consists of servers, storage devices, network, cloud management software, deployment software, and platform virtualization. Hypervisor Hypervisor is a firmware or low-level program that acts as a Virtual Machine Manager. It allows to share the single physical instance of cloud resources between several tenants. Management Software It helps to maintain and configure the infrastructure. Deployment Software It helps to deploy and integrate the application on the cloud. Network It is the key component of cloud infrastructure. It allows to connect cloud services over the Internet. It is also possible to deliver network as a utility over the Internet, which means, the customer can customize the network route and protocol. Server The server helps to compute the resource sharing and offers other services such as resource allocation and de-allocation, monitoring the resources, providing security etc. Storage Cloud keeps multiple replicas of storage. If one of the storage resources fails, then it can be extracted from another one, which makes cloud computing more reliable. Infrastructural Constraints Fundamental constraints that cloud infrastructure should implement are shown in the following diagram: Transparency Virtualization is the key to share resources in cloud environment. But it is not possible to satisfy the demand with single resource or server. Therefore, there must be transparency in resources, load balancing and application, so that we can scale them on demand. Scalability Scaling up an application delivery solution is not that easy as scaling up an application because it involves configuration overhead or even re-architecting the network. So, application delivery solution is need to be scalable which will require the virtual infrastructure such that resource can be provisioned and de-provisioned easily. Intelligent Monitoring To achieve transparency and scalability, application solution delivery will need to be capable of intelligent monitoring. Security The mega data center in the cloud should be securely architected. Also the control node, an entry point in mega data center, also needs to be secure. Print Page Previous Next Advertisements ”;