Product Overview

Advantages Cloud Virtual Machine Traditional Server
High stability and availability

99.95% service availability, and 99.999% data reliability

Inferior system

Users manually conduct disaster recovery, which relies on hardware sturdiness.

Flexible configuration and adjustment

Adjust bandwidth and configurations flexibly as required

Difficulties in Ops

Fixed machine configuration cannot be adjusted according to requirements.

Easy to use
Available upon purchase, fast deployment

Purchase CVMs with just one click; a variety of imaging functions, application software and Ops tools are provided

Complicated process and lots of effort

Devices need to be purchased and managed. Users need to expand the hardware by themselves.

Reliable storage, data guaranteed

Professional storage technology guarantees data security; and multiple real-time copies ensure data reliability.

Data loss

Data is physically stored in single points and data security is uncontrollable.

Low cost, purchase on demand

Supports annual/monthly packages or pay-by-traffic; adapting to different business scenarios.

24x7 free professional Ops support is provided.

High cost

Rental and Ops costs are high.

All-around protection, professional support

Multiple types of professional protection including DDoS protection, intrusion detection, and vulnerability scanning are provided.

Hacker intrusion

The need to purchase extra security protection services


Product Functions

  • Wide-spread data centers

    Tencent Cloud data centers are spread around the world, covering Southern China, Eastern China, Northern China, Hong Kong and North America. These data centers can meet any global service requirements that users may have.
  • A variety of model configurations

    The following CVM models are available:*
    Standard High I/O Memory
    Disk Local disk/Cloud disk SSD disk Local disk/Cloud disk
    Application scenario Applicable to medium- and small-sized Web applications and databases. Applicable to I/O intensive applications with low delay. Applicable to applications that need considerable memory operations, search, and computing.
    *Upgrade and degrade can only be conducted between CVMs of the same model.
  • Flexible Configurations

    CVMs provide rich configuration options for computing, networks and disks.
    Networks can be adjusted at any time without shutting down CVMs.
    CVM hardware can be adjusted and disks can be expanded, while the CVMs are shut down.
  • Flexible billing modes

    Annual/monthly packages and pay-by-traffic modes are available.
    For annual/monthly packages, one to several months of server fees are paid at all at once. The overall cost for this will be lower than pay-by-traffic, and is mostly applicable to scenarios in which resources are required for long periods of time.
    Pay-by-traffic is a billing mode for CVMs that is elastic. You can provision/terminate CVMs at any time and fees collected are based on the actual usage amount. This mode is applicable to sudden resource requirements, such as e-commerce rush purchases.
  • A variety of image sources

    Tencent Cloud provides three types of images:
    Public image: This image is provided by Tencent Cloud and is composed of a basic operating system and initialization components, complements of Tencent. It is available to all users.
    Service market image: This image is provided by a third-party service provider and is released to the service market after being reviewed by Tencent Cloud. It is available to all users.
    Custom image: This image is made by users by using the image making tool. An image created by a user can be only be used by the user themselves.
  • Server running environment backup

    A custom image can be used to back up the system disk of the server, to restore data in the case of data loss.
  • Cross-region image duplication

    A custom image can be duplicated to other Tencent Cloud regions so as to fully utilize the advantages of different Tencent Cloud locations.
  • Batch deployment of software environment

    Images can be made for a CVM with environment deployed, to create CVMs in batches, so as to fast deploy software environment in batches.
  • Various disk categories

    Tencent Cloud provides flexible and convenient data storage modes. Disks are differentiated by different dimensions.
    By storage media, disks are classified into common hard disks (mechanical hard disks) and SSDs.
    By architecture, disks are classified into local disks and Cloud disks.
    By content, disks are classified into system disks and data disks.
    Type SSD Local Disk Cloud disk
    Specifications 250G / 500GB / 1TB / 1.5TB / 3TB 10GB - 4TB
    Throughput Max 300 MB/s About 70 MB/s
    IOPS Max random performance: 40,000 IOPS Random performance: 3500 IOPS
    Price Annual/monthly packages: 0.8 CNY/GB/month 
    Pay-by-traffic: RMB 0.33/hour/100GB
    Annual/monthly packages: 0.3 CNY/GB/month 
    Pay-by-traffic: RMB 0.042/hour/100GB
    Scenario Low delay: Access delay is as low as several milliseconds. 
    Distributed application: It is applicable to I/O intensive applications such as NoSQL, MPP data warehouse and distributed file systems. Such applications support distributed data redundancy.
    Logs of large online applications: Large online applications will generate considerable logs. A high-performance storage device is required and logs have low requirements for storage device reliability.
    Single-point risks: The risk of single point of failures (SPOFs) may exist. It is recommended that data redundancy be conducted at the application layer to ensure data availability.
    High data reliability: Common Cloud Block Storages use mechanical disks as the storage medium and adopt the distributed three-copy mechanism.  
    Applicable to low-load services: It is especially applicable to scenarios in which data is not frequently accessed or the I/O load is low. 
    Independent mounting: Cloud Block Storages can be mounted to any virtual machine in the same availability zone.
  • Backup mechanism of cloud disks

    Disk snapshot function is provided to completely copy data in Cloud disks. The data is stored in multiple availability zones in redundancy mode. It is a tool for disaster recovery and data backup.
  • Free public IP and private IP

    Free public IP resources will be allocated to you if you purchase a public network bandwidth larger than 0 bit/s.
    A private IP is allocated to each CVM instance. The private IP is mandatory and cannot be changed. The private IP can be used for private network access between CVM instances.
  • High-quality network

    The BGP network supports access of all mainstream carriers in China. CVMs can provide top-speed public networks that encompass all of China. When a public network influx fault occurs, CVMs can implement inter-domain scheduling within seconds.
  • Custom network architecture

    The Virtual Private Cloud (VPC) provides independent network space built using CVM instances to users, and allows customizing network segment classification, IP addresses and routing policies. It provides port-level access control to implement overall logical isolation of networks.
  • Custom network architecture

    Elastic pubic IP can rapidly remap IP addresses to CVM instances, and quickly mask instance faults when a CVM fault occurs.
  • Remote CVM login in multiple modes

    VNC login: This mode is an efficient remote control tool featuring powerful control capabilities. It authenticates and gives control permissions of CVMs over to users.
    SSH key: The SSH key login mode is more secure than the common login mode using user names and passwords. It completely eradicates brute force cracking threats.
  • Perfect permission settings

    A sound collaborator mechanism is provided to implement authority-based resource management.
  • Operation log

    CVMs store all CVM-relevant important operation records for locating and querying operation records in the future.
  • CVM recycle bin

    The recycle bin is a resource recovery mechanism established for prepaid CVMs.
  • Abundant security services safeguard your CVMs.

    CVMs support various security services including DDoS protection, DNS hijacking detection, intrusion detection, vulnerability scanning, Webpage Trojan detection, and login protection to safeguard your CVMs.
  • DDoS protection

    A free protection system – Dayu system – is provided for HTTP and mobile acceleration services. Its protection capability is 100G and is several times better than the universal DDoS protection solution provided by Tencent Cloud.
    Dedicated high protection areas are provided for non-HTTP services (such as game service).
  • Intrusion detection

    Professional website Trojan detection and other security functions are provided, and a professional analysis model is used to periodically detect websites, in an effort to discover Trojans in a timely manner and notify you of the discovered Trojans, thereby safeguarding secure running of your websites.
  • Vulnerability scanning

    CVMs use a distributed scanning system, which notifies users of identified website vulnerabilities in a timely manner by using messages or short messages. The professional vulnerability fixing guide can help you fix a website vulnerability within three minutes.
  • Security group

    A security group is a virtual firewall with packet filtering functions. It sets network access control of one or more CVMs. It is an important means of network security isolation.
  • CVMs provide cloud monitor and supports multiple real-time forewarning modes.

  • Multi-indicator monitoring

    CVMs provide multiple cloud service load and performance indicators, including CPU utilization, memory utilization, disk utilization, cloud database, and NoSQL high-speed storage.
  • Custom alarm thresholds

    Alert triggering thresholds of multiple indicators can be configured. Policies can be associated with different cloud products. Alert recipients and transmission channels can be customized.
  • Alert channel service

    CVMs provide custom alert channel services.
  • Health analysis

    CVMs comprehensively analyze key indicators of cloud resources, and rate resources by indicator importance to calculate the health score of the entire system.


CVMs support annual/monthly fee and pay-by-traffic to meet service requirements of different users.