Cloud Server and cloud computing

Cloud computing concept of the arrival of webmaster, entrepreneurs and enterprises have brought far-reaching impact. A new noun-cloud server (also known as Cloud host) was born. Traditionally, user-familiar web hosting technologies include virtual hosts, VPS servers and host leases. For the vast majority of users who have become accustomed to traditional hosting services, the concept of cloud servers seems to be relatively remote. So what is a cloud server? What is the real difference between hosting and renting?

Virtual Host

VPS

Cloud Server (Cloud host)

Host Rental

Deployment time

Few minutes, many days.

Immediate, without installing the operating system

Instant, a few minutes to complete, can be a key deployment, but also can be installed independently of the operating system

Days to Weeks

Safety and reliability

Poor: In the same house on the server, multiple users share the unified resource, and once attacked, all sites of the same server cannot run. When the server is busy, the site runs slowly. Although there is a hard and soft protection, but very poor security.

Poor: The same physical server on the other VPS installed on the program defects, ARP spoofing, viruses, resource crowding and so will seriously affect their own; basic no ARP, Trojan and DDoS defense capabilities

High: Scale upgrade DDoS attack capability, share brand Enterprise Server and hardware virtualization performance and reliability, built-in ha, provide standby, snapshots, data backup and other rapid recovery measures

General: Rental White Card server failure rate is high, basic no ARP, Trojan and DDoS defense capabilities, basic no standby and data backup services

Performance and Protection

Poor: poor performance, suitable for corporate web sites, if the server has a large flow of sites, then other sites will be affected each other.

Poor: Performance general, only suitable for small-scale concurrent access, performance is not guaranteed, vulnerable to the same physical server on the other VPS squeeze

Good and secure: same physical server

Good and secure.

Elasticity and extensibility

Super rapid expansion, subject to a single server configuration

Rapid expansion, subject to a single server configuration

Instant supply, on-demand expansion without paying for original leased resources

Expansion requires a new lease of the server and a fee for the original leased resource

Cost of ownership

Lowest cost, safety and reliability according to VPS, independent host poor, low cost, high profit.

Low-profile VPS rental prices are lowest, but low security reliability and unsecured performance lead to service quality insecurity, operating cost is difficult to control and high

The lowest comprehensive cost: on-demand use of pay, basic 0 maintenance, but also to share the scale, green energy saving, the best it practice brought by this advantage

Shinian pay a high cost, the need for service providers to pass capex expenditure payment deposit; The server that needs to maintain its own lease causes opex higher

Managing Usability

Unified Management

Provides a single stand-alone management interface with no root or Super Administrator operating system privileges, and management flexibility is governed by the management interface

The lowest comprehensive cost: on-demand use of pay, basic 0 maintenance, but also to share the scale, green energy saving, the best it practice brought by this advantage

Remote control card required and only leased brand machine is possible, centralized unified management is not achieved

From a technical point of view, the cloud server is in a group of clustered servers virtual a number of similar stand-alone servers, each server in the cluster has a cloud server mirror, which greatly improve the security stability of the virtual server. The VPS is based on the operating system software virtualization, not the overall server hardware resources virtualization, so in terms of resource availability, performance, security and scalability with the cloud server can not be compared.

From a service delivery perspective, the cloud server is a web-based service that provides resilient cloud technology for tuning server configuration, an IaaS service that consolidates computing, storage, and network resources, and a server rental service based on on-demand and on-demand capacity on the basis of cloud computing mode.

The advantage of the real cloud server is based on cloud computing virtualization cluster, can automatically failover, the system automatically provides snapshots, hot spare, a variety of system templates, can be quickly deployed 5 minutes, and can have a full view of the cloud host, real-time monitoring cloud host situation.

At the same time, it can be seen from the above table, cloud server from the deployment time, security, reliability, performance and security, flexibility and reliability, cost of ownership and manageability and other aspects of the advantages of other technologies, is currently one of the most advanced web hosting technology.

At present, there are a number of powerful cloud service providers can provide cloud server services, including Aliyun and Wuxi Huayun can provide seamless flexible cloud server services.