Tencent Cloud CVM Dedicated Host (CDH) provides you with exclusive physical server resources that meet the requirements for resource exclusivity, physical isolation, security and compliance. CDH is equipped with Tencent Cloud's virtualized system. Once purchased, CDH can help you flexibly create and manage multiple Cloud Virtual Machine (CVM) instances with custom specs and plan the use of physical re-sources.
CVM Dedicated Host
Physically isolated cloud computing service with exclusive resources
Overview
Benefits
Exclusive Resources
CDH provides physical machine-grade exclusive resources that can be independently planned for use to avoid competition from resources of other tenants. CDH can be purchased in just minutes through the Tencent Cloud console or APIs.
Security and Compliance
CPU, memory, disk and network resources are all dedicated to one single tenant. Physical machine-grade resource isolation provides sensitive business data protection and disk demagnetizing capabilities to meet the high regulatory requirements of the finance industry.
Independence and Flexibility
CVM instances can be allocated to the specified CDH and independently planned for the use of host resources. The instance specs support customization, allowing for flexible configuration and breaking the limitations of server specs to ensure business performance while making full use of physical server resources.
Inherent CVM Features
An exclusive server is a CVM instance created on CDH that supports various CVM functions such as images, security groups, configuration adjustments and SSH keys. You can use these functions just like you would an ordinary CVM instance.
Light Assets
On-demand purchase, minute-level delivery and Tencent Cloud OPS services with unified standards ensure stable resource operation, eliminating the need to worry about underlying OPS, reducing labor and OPS costs and allowing you to focus on your core businesses.
Features
Host Type
Images
Cloud Block Storage (CBS)
Networks
Host Type
Variety of Models and Specs
There are four CDH options currently being offered: standard, MEM optimized, computing 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 latency, 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 limitations 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.
Images
Rich Image Sources
Tencent Cloud provides the following three types of images:
• Public image: Provided by Tencent Cloud, comprised of the basic operating system and initialization components provided by Tencent and accessible to all us-ers.
• Custom image: Created by the user through the image creation function and accessible 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.
Cloud Block Storage (CBS)
High Reliability
Cloud Block Storage (CBS) is a data block-grade persistent storage device featuring industry-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.
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.
Scalability
The storage capacity of CBS can be freely configured and expanded on-demand without 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.
Networks
High Quality
Tencent Cloud provides you with a high-quality BGP network for ultrafast Internet access 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 connect link can be created between your IDC and VPC to use Tencent Cloud as an extension 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.
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 supports the configuration of alarm trigger thresholds for multiple metrics. Alarm notification recipients and delivery channels can be customized.
Features
Host Type
Variety of Models and Specs
There are four CDH options currently being offered: standard, MEM optimized, computing 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 latency, 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 limitations 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.
Images
Rich Image Sources
Tencent Cloud provides the following three types of images:
• Public image: Provided by Tencent Cloud, comprised of the basic operating system and initialization components provided by Tencent and accessible to all us-ers.
• Custom image: Created by the user through the image creation function and accessible 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.
Cloud Block Storage (CBS)
High Reliability
Cloud Block Storage (CBS) is a data block-grade persistent storage device featuring industry-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.
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.
Scalability
The storage capacity of CBS can be freely configured and expanded on-demand without 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.
Networks
High Quality
Tencent Cloud provides you with a high-quality BGP network for ultrafast Internet access 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 connect link can be created between your IDC and VPC to use Tencent Cloud as an extension 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.
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 supports the configuration of alarm trigger thresholds for multiple metrics. Alarm notification recipients and delivery channels can be customized.
Scenarios
Financial Businesses
High-performance Businesses
Financial businesses often have to meet strict compliance requirements. The user can deploy the businesses on the CVM instances of CDH, ensuring physical isolation from other users' servers while using resources exclusively to meet the requirements for sensitive business data protection and disk demagnetizing.
For business scenarios that require high performance stability such as live game broadcasting, CDH can be used to guarantee the exclusive use of physical server resources, where the user can plan the business deployment on CDH and make full use of the resources while avoiding resource preemption.
