CVM Dedicated Host

Variety of Models and Specs

There are four CDH options currently being offered: standard, MEM optimized, compu-ting and high-I/O.

• Standard: Features balanced computing, memory and network resources that can meet application resource requirements in most scenarios.

• MEM optimized: Features large memory, suitable for applications requiring a large number of memory operations, lookups and calculations such as high-performance databases and distributed memory caches.

• Computing: Features high random IOPS, high throughput and low access laten-cy, suitable for I/O-intensive applications such as high-performance databases with high disk read/write and latency requirements.

• High-I/O: Features the highest single-core computing performance, suitable for compute-intensive applications such as batch processing, high-performance computing and large-scale gaming servers.

Flexible Creation and Specs Adjustment

CVM instances can be created by specifying one or more CDHs. There are no limita-tions on CVM instance specs which can be customized based on the host resources, enabling you to plan and allocate resources independently and efficiently. A wide range of computing, network and disk options and adjustments are available. You can up-grade/downgrade the CPU and memory specs of the CVM instance and upgrade the disk specs.

Multiple Regions and Availability Zones

Tencent Cloud boasts hosted IDCs in many regions around the globe, so you can choose a region close to your target clients for CDH deployment, significantly reducing access latency and enhancing user experience.

There are multiple availability zones in each region. If your business requires high disas-ter recovery performance, CDH instances can be deployed in different availability zones in the same region to protect applications from being affected by the failure of a single availability zone.

Rich Image Sources

Tencent Cloud provides the following three types of images:

• Public image: Provided by Tencent Cloud, comprised of the basic operating sys-tem and initialization components provided by Tencent and accessible to all us-ers.

• Custom image: Created by the user through the image creation function and ac-cessible only to the user.

• Shared image: Shared by other users and only used to create instances.

Backup Server Operating Environment

Custom images can be used to back up the server's system disk for quick recovery of lost data.

Cross-region Image Replication

Custom images can be replicated to other Tencent Cloud regions so you can enjoy Tencent Cloud's geographical advantages. Learn more about custom image operations.

Batch Deployment of Software Environment

CVM instances can be created in batches by making an image of a CVM instance with deployed environment, enabling fast and batch deployment of software environment.

High Reliability

Cloud Block Storage (CBS) is a data block-grade persistent storage device featuring in-dustry-leading high availability and data reliability up to 99.999999%. CBS adopts a three-copy storage mechanism to enable quick data migration and recovery in the event of failure of any single copy, ensuring that your data always has three available copies and providing a secure data storage service for your peace of mind.

High Performance

Three CBS options are offered: HDD cloud disk, premium cloud disk and SSD cloud disk, each of which meet the needs of different scenarios. SSD cloud disk uses NVMe high-performance SSD with one single disk capable of providing 24,000 random IOPS and throughput of 260 MB/s, simultaneously achieving superior performance and ultra-high reliability.

See a detailed comparison of the three available options >

Snapshot Backup

By taking a snapshot of CBS to keep a backup copy of the data, a new cloud disk can be created from the snapshot and connected to another instance at any time to increase business agility.

Learn more about snapshot >

Scalability

The storage capacity of CBS can be freely configured and expanded on-demand with-out interrupting business operation.

Single-disk capacity is between 10 and 16,000 GB with 160 TB of storage able to be mounted to one single CVM instance, and there is no upper limit for the storage capacity of one single CBS cluster, enabling efficient handling of big data processing scenarios at the terabyte and petabyte levels.

High Quality

Tencent Cloud provides you with a high-quality BGP network for ultrafast Internet ac-cess experience. The BGP network supports access to all major ISPs in China and co-vers over 20 lines, enabling cross-regional scheduling in just seconds when an Internet ingress fails.

Security

Virtual Private Cloud (VPC) allows you to pre-configure an independent virtual network space in the cloud and launch cloud resources there. A VPN connection or direct con-nect link can be created between your IDC and VPC to use Tencent Cloud as an exten-sion of your IDC.

The traffic to and from each subnet in VPC can be controlled using access policy control (ACL).

The inbound and outbound traffic of each instance can be controlled by setting up a security group policy.

Learn more about VPC >

Elastic IP

Elastic IP (EIP) address is a static IP address designed for dynamic cloud computing. An EIP can be bound to a CVM instance under the account, and if the instance fails, the EIP can be quickly bound to another CVM instance to ensure uninterrupted business availability.

Monitoring

Multi-dimensional monitoring of CDH and CVM is supported. Multiple monitoring metrics are available, including CPU utilization, memory utilization and disk utilization. CVM sup-ports the configuration of alarm trigger thresholds for multiple metrics. Alarm notification recipients and delivery channels can be customized.