Account 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.
• You need to verify your identity. For more information, see Identity Verification Guide.
• 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).
• The public gateway CVM is available only in Linux operating system.

CVM Instance Purchase Limits

• The purchase limit of pay-as-you-go CVM instances for each user in each availability zone is between 30 and 60. Please see the CVM purchase page for the exact purchase limit.
• For more information, see Purchase Limits.

Image Limits

• Public images: no use limits.
• Custom images: each region supports a maximum of 10 custom images.
• Shared images: each custom image can be shared with a maximum of 50 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 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.

<th style="text-align:center;">CPU: 14 cores</th><th style="text-align:center;">CPU: 16 cores</th><th style="text-align:center;">CPU: &amp;dxgt;16 cores</th>

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		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

• Maximum inbound bandwidth (upstream bandwidth)
  • If the fixed bandwidth you purchased is greater than 10 Mbps, Tencent Cloud will assign a public network inbound bandwidth equals to the purchased bandwidth.
  • If the fixed bandwidth you purchased is less than 10 Mbps, Tencent Cloud will assign 10-Mbps public network inbound bandwidth.

Disk Limits

Security Group Limits

• Security groups are region-specific. A CVM 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 can be associated with multiple security groups, and a security group can be associated with multiple CVM instances.
• Security groups associated with CVMs on the classic network cannot 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
  Number of security groups	50 per region
  Number of rules in a security group	100 for inbound rules and 100 for outbound rules
  Number of CVM instances associated with a security group	2,000
  Number of security groups associated with a CVM instance	5
  Number of security groups that can be referenced by a security group	10

VPC Limits