Shulou(Shulou.com)06/03 Report--

What is the difference between private cloud servers and public cloud servers? Many people don't know much about it. Today, in order to give you a better understanding of private and public CVMs, let's summarize the following. Let's take a look at it.

The era of clouds is gradually infiltrating into our lives with the attitude of nourishing all things in silence. But for ordinary people, although cloud computing servers are so familiar, they are so far away.

Characteristics of Private Cloud

Create different types of subnets: tenants can create different types of subnets, which can be used individually or in combination to adapt to different application scenarios. Subnet types include:

1. Directly connected subnets, assigned public network IP address space, can be directly connected to the Internet environment.

two。 Route subnets and assign private IP address space. Configure elastic IP to route CVM instances in the subnet and obtain Internet interconnection capability. Routed networks also support a range of network features, such as NetACL (routing inter-subnet ACL control), FWACL (Internet-to-routing subnet ACL control), DNAT,SNAT,IPsec VPN

3. Internal subnet, assigning private IP address space. Direct access to the internal subnet is not allowed by the outside world. The external can only obtain access to the internal subnet through the mediation host instance. The mediation host instance has at least two virtual network cards, which are hung on the routing subnet and the internal subnet

Site to Site VPN connection:

Allows tenants to create virtual private network (VPN) connections between their corporate data centers and VPC, using the public cloud as an extension of their corporate data centers. And compatible with IP address planning, DNS, security services, firewall, IDS and other network and security configurations and policies of users' enterprise data centers, tenants use various resources provided by the public cloud platform under the same network and security policies.

There are many characteristics of public CVM data:

structure

Physical layer: CPU, memory, hard disk plus professional data center computer room

Software layer: Ali YunOS builds public cloud

Characteristics

Flexible, the hardware configuration of CVM can be configured and expanded as needed, such as CPU, memory, SSD data disk.

High-performance, cloud service environment uses high-end servers for deployment, based on cluster servers, with stronger host performance.

The management is convenient, and operations such as capacity expansion and upgrade need to be carried out later, and it is more convenient to use the CVM.

Data security. The CVM has a data backup function. Even if there is a problem with the hardware, the data will not be affected or lost. And it is maintained by the service provider.

Stable, commonly used virtual host is a machine used by many users at the same time, so that if one website is attacked, other websites will also be affected, so the stability of the space will be greatly reduced. This will not happen when using a CVM, and it is more secure and reliable.

Application

Public CVM adopts leasing mode, which supports monthly and annual payment, flexible billing method, no deposit, and flexible expansion on demand. And the operation, storage and network can be combined separately, which is very convenient.

These are the details of the difference between private CVM and public CVM, and whether you have gained anything after reading it. If you want to know more, welcome to the industry information!

As a senior professional cloud computing service provider and cloud security service provider in the industry, it is committed to providing cloud host rental services such as "cloud servers, bare metal servers, high defense servers, Hong Kong servers, American servers" and comprehensive solutions on cloud for the vast number of Internet enterprise users and enterprise users in traditional industries. It has the characteristics and advantages of "security and stability, easy to use, high service availability, high performance-to-price ratio". It is specially customized for enterprises on the cloud, and can meet the needs of rich and diversified application scenarios.

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