tencent cloud

Cloud Virtual Machine

DocumentationCloud Virtual MachineUser GuideUse Limits

Use Limits

Download
Focus Mode
Font Size
Last updated: 2026-10-23 19:02:35
AI-Translated & Reviewed

Account-level Limits for Purchasing CVM Instances

You need to sign up for a Tencent Cloud account. For more information, see Signing up for a Tencent Cloud Account.
If you create a pay-as-you-go CVM, the system will freeze the cost of one-hour CVM usage. Make sure that your account has sufficient balance for the order.

CVM Instance Use Limits

Virtualized software cannot be installed or re-virtualized (such as installing VMware or Hyper-V).
You cannot use sound cards or mount external hardware devices (such as USB flash drives, external disks, and U-keys).
Only Linux CVMs can act as a public gateway.

CVM Instance Purchase Limits

Each user has a purchase quantity quota for CVM instances in each AZ and billing mode. To view the quota details, go to the Instance Quota page. If needed, you can request a quota increase.
For more information, see Purchase Limits.

Image Limits

Public images: No use limits.
Custom images: Each region supports a maximum of 500 custom images.
Shared images: Each custom image can be shared with a maximum of 500 Tencent Cloud users. Custom images can only be shared with accounts in the same region as the source account.
For more information, see Image Types.

ENI Limits

Based on CPU and memory configurations, the number of ENIs bound to a CVM instance differs from the number of private IPs bound to an ENI. The quotes are as shown below:
Note:
The number of IP addresses bound to a single ENI only represents the maximum number of IP addresses that can be bound to the ENI. It does not guarantee that EIP quotas are provided based on this maximum. EIP quotas are provided based on the EIP use limits.
ENIs per CVM instance
Private IPs per ENI
Model
Instance Type
Number of ENIs
CPU: 1 core
CPU: 2 cores
CPU: 4 cores
CPU: 6 cores
CPU: 8 cores
CPU: 10 cores
CPU: 12 cores
CPU: 14 cores
CPU: 16 cores
CPU: >16 cores
Standard
Standard S5
2
-
-
-
6
-
-
-
8
8
Standard Storage Optimized S5se
-
-
-
-
6
-
-
-
8
8
Standard SA2
2
-
-
-
6
-
-
-
8
8
Standard S4
2
-
-
-
6
-
-
-
8
8
Standard Network-optimized SN3ne
2
-
-
-
6
-
8
-
8
8
Standard S3
2
-
-
-
6
-
8
-
8
8
Standard SA1
2
2
-
-
6
-
-
-
8
8
Standard S2
2
-
-
-
6
-
8
-
8
8
Standard S1
2
-
-
-
6
-
8
-
8
8
High IO
High IO IT5
-
-
-
-
-
-
-
-
8
8
High IO IT3
-
-
-
-
-
-
-
-
8
8
Memory Optimized
Memory Optimized M5
2
-
-
-
6
-
8
-
8
8
Memory Optimized M4
2
-
-
-
6
-
8
-
8
8
Memory Optimized M3
2
-
-
-
6
-
8
-
8
8
Memory Optimized M2
2
-
-
-
6
-
8
-
8
8
Memory Optimized M1
2
-
-
-
6
-
8
-
8
8
Compute
Compute Optimized C4
-
-
-
-
6
-
-
-
8
8
Compute Network-optimized CN3
-
-
-
-
6
-
-
-
8
8
Compute C3
-
-
-
-
6
-
-
-
8
8
Compute C2
-
-
-
-
6
-
-
-
8
8
GPU-based
GPU Compute GN6
-
-
-
-
-
-
-
-
-
8
GPU Compute GN6S
-
-
-
-
6
-
-
-
-
-
GPU Compute GN7
-
-
-
-
6
-
-
-
-
8
GPU Compute GN8
-
-
-
-
-
-
-
8
-
8
GPU Compute GN10X
-
-
-
-
6
-
-
-
-
8
GPU Compute GN10Xp
-
-
-
-
-
6
-
-
-
8
FPGA-based
FPGA Accelerated FX4
-
-
-
-
-
6
-
-
-
8
Big Data
Big Data D3
-
-
-
-
6
-
-
-
8
8
Big Data D2
-
-
-
-
6
-
-
-
8
8
Big Data D1
-
-
-
-
6
-
-
-
-
8
Cloud Bare Metal
ENI binding not supported.

Model
Instance Type
Private IPs bound to a single ENI
CPU: 1 core
CPU: 2 cores
CPU: 4 cores
CPU: 6 cores
CPU: 8 cores
CPU: 10 cores
CPU: 12 cores
CPU: 14 cores
CPU: 16 cores
CPU: >16 cores
Standard
Standard S5
6
10
10
-
20
-
-
-
30
30
Standard Storage Optimized S5se
-
-
20
-
20
-
-
-
30
30
Standard SA2
6
10
10
-
20
-
-
-
30
30
Standard S4
6
10
10
-
20
-
-
-
30
30
Standard Network-optimized SN3ne
6
10
10
-
20
-
30
-
30
30
Standard S3
6
10
10
-
20
-
30
-
30
30
Standard SA1
1 GB memory: 2>1 GB memory: 6
10
8 GB memory: 10 16 GB memory: 20
-
20
-
-
-
30
30
Standard S2
6
10
10
-
20
-
30
-
30
30
Standard S1
6
10
10
-
20
-
30
-
30
30
High IO
High IO IT5
-
-
-
-
-
-
-
-
30
30
High IO IT3
-
-
-
-
-
-
-
-
30
30
Memory Optimized
Memory Optimized M5
6
10
10
-
20
-
30
-
30
30
Memory Optimized M4
6
10
10
-
20
-
30
-
30
30
Memory Optimized M3
6
10
10
-
20
-
30
-
30
30
Memory Optimized M2
6
10
10
-
20
-
30
-
30
30
Memory Optimized M1
6
10
10
-
20
-
30
-
30
30
Compute
Compute Optimized C4
-
-
10
-
20
-
-
-
30
30
Compute Network-optimized CN3
-
-
10
-
20
-
-
-
30
30
Compute C3
-
-
10
-
20
-
-
-
30
30
Compute C2
-
-
10
-
20
-
-
-
30
30
GPU-based
GPU Compute GN2
-
-
-
-
-
-
-
-
-
30
GPU Compute GN6
-
-
-
-
-
-
-
-
-
30
GPU Compute GN6S
-
-
10
-
20
-
-
-
-
-
GPU Compute GN7
-
-
10
-
20
-
-
-
-
30
GPU Compute GN8
-
-
-
10
-
-
-
30
-
30
GPU Compute GN10X
-
-
-
-
20
-
-
-
-
30
GPU Compute GN10Xp
-
-
-
-
-
20
-
-
-
30
FPGA-based
FPGA Accelerated FX4
-
-
-
-
-
20
-
-
-
30
Big Data
Big Data D3
-
-
-
-
20
-
-
-
30
30
Big Data D2
-
-
-
-
20
-
-
-
30
30
Big Data D1
-
-
-
-
20
-
-
-
-
30
Cloud Bare Metal
ENI binding not supported.


Batas Bandwidth

Public Network Outbound Bandwidth Cap (Downstream Bandwidth)

The following rules apply to instances created after 00:00, February 24, 2020:
Network Billing Method
CVM Instance
Range of Bandwidth Cap (Mbps)
Instance Billing Method
Instance Configuration
Bill-by-traffic
Pay-as-you-go instances
All
0–200 (inclusive)
Yearly/Monthly Subscription Instances
All
By hourly bandwidth
Pay-as-you-go instances
All
0–2000 (inclusive)
Yearly/Monthly subscription
Yearly/Monthly Subscription Instances
All
0–2000 (inclusive)
BWP
All
0–2000 (inclusive)
The following rules apply to instances created before 00:00, February 24, 2020:
Network Billing Method
CVM Instance
Range of Bandwidth Cap (Mbps)
Instance Billing Method
Instance Configuration
Bill-by-traffic
Pay-as-you-go instances
All
0–200 (inclusive)
Yearly/Monthly Subscription Instances
Number of cores ≤ 8 cores
0–200 (inclusive)
8 cores < Number of cores < 24 cores
0–400 (inclusive)
Number of cores ≥ 24 cores
0–400 (inclusive) or no speed limit
Hourly bandwidth billing
Pay-as-you-go instances
All
0–2000 (inclusive)
Yearly/Monthly subscription
Yearly/Monthly Subscription Instances
All
0–2000 (inclusive)
BWP
All
0–1000 (inclusive)

Public Network Inbound Bandwidth Cap (Upstream Bandwidth)

Public network inbound bandwidth refers to the bandwidth flowing into a CVM instance.
Public IP addresses billed by traffic and billed by fixed bandwidth (including billing by hourly bandwidth and monthly bandwidth subscription):
If the bandwidth you purchased is less than or equals to 10 Mbps, Tencent Cloud will assign 10 Mbps public network inbound bandwidth.
If the bandwidth you purchased is greater than 10 Mbps, Tencent Cloud will assign a public network inbound bandwidth equals to the purchased bandwidth.
Public IP addresses billed by BWP:
Tencent Cloud will assign a public network inbound bandwidth equals to the purchased bandwidth.

Limitations on cloud disks

Limitations
Description
Elastic cloud disks per CVM
A maximum of 20
Attaching cloud disks to a CVM
The CVM instance and cloud disks must be in the same availability zone.
Snapshot quantity per CBS
A maximum of 1,000.
Snapshot rollback
Snapshot data can only be rolled back to the source CBS from which the snapshot was created. To create a new CBS from an existing snapshot, see Creating a CBS from a Snapshot.
Creating cloud disks using snapshot - Type limit
Only data disk snapshots can be used to create new elastic cloud disks, while system disk snapshots can only be used to create custom images.
Creating cloud disks using snapshot - Size limit
The capacity of new cloud disk must be larger than the source disk of the snapshot.

Security Group Limits

Security groups are region-specific. A CVM instance can only be bound to security groups in the same region.
Security groups are applicable to CVM instances in any network environment.
Each user can configure a maximum of 50 security groups for each project in a region.
A maximum of 100 inbound or outbound rules can be configured for a security group.
One CVM instance can be associated with multiple security groups, and a security group can be associated with multiple CVM instances.
Security groups associated with CVM instances on the classic networkcannot filter packets from or to TencentDB (MySQL, MariaDB, SQL Server, or PostgreSQL) and NoSQL (Redis or Memcached) databases. Instead, you can use iptables or purchase CFW to filter traffic for such instances.
The quotas are as shown below:
Item
Limit
Security groups
50 per region
Rules in a security group
100 for inbound rules and 100 for outbound rules
CVM instances associated with a security group
2,000
Security groups associated with a CVM instance
5
Security groups referenced by a security group
10

VPC Limits

Resource
Limit
Number of VPCs per account in each region
20
Number of subnets in each VPC
100
Number of basic network CVMs that can be associated with each VPC
100
Number of route tables in each VPC
10
Number of route tables associated with each subnet
1
Number of routing policies for each route table
50
Default HAVIP quota in each VPC
10


Previous Topic: Operation Guide OverviewNext Topic: Instance Overview

Help and Support

Was this page helpful?

Help us improve! Rate your documentation experience in 5 mins.

Feedback

Search
    Enter keywords to search documentation