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    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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