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Use Limits
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Last updated: 2024-05-16 10:55:46
Use Limits
Last updated: 2024-05-16 10:55:46
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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

The purchase limit of pay-as-you-go CVM instances for each user in each AZ is between 30 and 60.
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 indicates the maximum number allowed. The EIP quota is not provided based on this upper limit but based on 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
4
4
-
6
-
-
-
8
8
Standard Storage Optimized S5se
-
-
4
-
6
-
-
-
8
8
Standard SA2
2
4
4
-
6
-
-
-
8
8
Standard S4
2
4
4
-
6
-
-
-
8
8
Standard Network-optimized SN3ne
2
4
4
-
6
-
8
-
8
8
Standard S3
2
4
4
-
6
-
8
-
8
8
Standard SA1
2
2
4
-
6
-
-
-
8
8
Standard S2
2
4
4
-
6
-
8
-
8
8
Standard S1
2
4
4
-
6
-
8
-
8
8
High IO
High IO IT5
-
-
-
-
-
-
-
-
8
8
High IO IT3
-
-
-
-
-
-
-
-
8
8
Memory Optimized
Memory Optimized M5
2
4
4
-
6
-
8
-
8
8
Memory Optimized M4
2
4
4
-
6
-
8
-
8
8
Memory Optimized M3
2
4
4
-
6
-
8
-
8
8
Memory Optimized M2
2
4
4
-
6
-
8
-
8
8
Memory Optimized M1
2
4
4
-
6
-
8
-
8
8
Compute
Compute Optimized C4
-
-
4
-
6
-
-
-
8
8
Compute Network-optimized CN3
-
-
4
-
6
-
-
-
8
8
Compute C3
-
-
4
-
6
-
-
-
8
8
Compute C2
-
-
4
-
6
-
-
-
8
8
GPU-based
GPU Compute GN6
-
-
-
-
-
-
-
-
-
8
GPU Compute GN6S
-
-
4
-
6
-
-
-
-
-
GPU Compute GN7
-
-
4
-
6
-
-
-
-
8
GPU Compute GN8
-
-
-
4
-
-
-
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
CPM
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: 1016 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
CPM
Not supported


Bandwidth Limits

Maximum outbound bandwidth (downstream bandwidth)
The following rules apply to instances created after 00:00, February 24, 2020:
Network Billing Method
Instance
Maximum Bandwidth Range (Mbps)
Instance Billing Method
Instance Configuration
Bill-by-traffic
Pay-as-you-go instances
All
0-100
Bill-by-bandwidth
Pay-as-you-go instances
All
0-100
Bandwidth package
All
0-2000
The following rules apply to instances created before 00:00, February 24, 2020:
Network Billing Method
Instance
Range of Bandwidth Cap (Mbps)
Instance Billing Method
Instance Configuration
Bill-by-traffic
Pay-as-you-go instances
All
0-100
Bill-by-bandwidth
Pay-as-you-go instances
All
0-100
Bandwidth package
All
0-2000
Maximum inbound bandwidth (upstream bandwidth)
Purchased fixed bandwidth > 10 Mbps:Tencent Cloud will assign a public network inbound bandwidth equals to the purchased bandwidth.
Purchased fixed bandwidth < 10 Mbps, Tencent Cloud will assign 10-Mbps public network inbound bandwidth.

Disk Limits

Limitations
Description
Elastic cloud disk capability
Starting from May 2018, all data disks purchased with CVM instances are elastic cloud disks, which can be unmounted from and remounted to CVM instances. This feature is supported in all availability zones.
Cloud disk performance
I/O specification applies to both input and output performance at the same time.For example, if a 1-TB SSD has a maximum random IOPS of 26,000, it means that both its read and write performance can reach this value. Due to performance limits, if the block size in this example is 4 KB or 8 KB, the maximum IOPS can be reached. If the block size is 16 KB, the maximum IOPS cannot be reached (throughput has already reached the limit of 260 MB/s).
Elastic cloud disks per CVM
A maximum of 20
Snapshots per region
64 + Number of cloud disks in the region x 64
Attaching cloud disks to a CVM
The CVM instance and cloud disks must be in the same availability zone.
Snapshot rollback
Snapshot data can only be rolled back to the cloud disk where the snapshot was created.
Creating cloud disks using snapshot - Type limit
Only snapshots of data disks can be used to create new elastic cloud disks.
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
VPCs per region per account
20
Subnets per VPC
100
Classic network-based CVMs associated with each VPC
100
Route tables per VPC
10
Route tables associated with each subnet
1
Routes per route table
50
HAVIPs per VPC
10

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