This page lists the resource quotas and feature constraints for Alibaba Cloud Edge Node Service (ENS). For adjustable limits, submit a ticket or contact your account manager to request a quota increase.
Images
| Feature | Limit | Adjustable |
|---|
| Custom images per user | 10 | Yes |
| Create a custom image from an instance | Available only for: x86-based computing instance, x86-based physical machine, x86-based bare metal instance, ARM-based computing instance, heterogeneous VM, and heterogeneous bare metal instance | No |
| Create a custom image by using an image builder | Available only for x86-based computing instance families | No |
| Delete a custom image | The image must not be in use by any instances | No |
Instances
| Feature | Limit | Adjustable |
|---|
| Create instances | Real-name verification must be complete | No |
| Network interface controllers (NICs) per instance | 16 | No |
| Instances purchasable at a time | 100 | No |
| Default maximum performance | See Instance overview | Yes |
| Unsubscribe from or release an instance | Disks created with the instance must not have snapshots | No |
Instance family support matrix
Several instance-level features are available only for specific instance families. The following table summarizes compatibility.
| Feature | x86 computing | x86 physical machine | x86 bare metal | ARM computing | Heterogeneous VM | Heterogeneous bare metal |
|---|
| Reset the system disk | Yes | No | No | No | No | No |
| Reset an instance | Yes | Yes | Yes | Yes | Yes | Yes |
| Support public NICs | Yes | Yes | No | Yes | No | No |
| Modify the hostname | Yes | No | No | No | Yes | No |
| Custom data (Linux) | Yes | Yes | Yes | Yes | No | Yes |
| Custom data (Windows) | No | No | No | No | Yes | No |
| Virtual Network Computing (VNC) connections | Yes | Partial* | Yes | Yes | No | Yes |
| Change bandwidth | Yes | No | No | No | No | No |
*Some x86-based physical machine and bare metal instance models do not support VNC connections.
Public bandwidth
| Feature | Limit | Adjustable |
|---|
| Peak pay-as-you-go bandwidth per node | 5 Gbps | Yes |
| Peak bandwidth per instance | See Instance overview | Yes |
SSH key pairs
| Feature | Limit | Adjustable |
|---|
| Supported images | Linux images only | No |
| Supported instance families | x86-based computing instance, heterogeneous VM, and ARM-based computing instance | No |
| Delete a key pair | The key pair must not be in use by any instances | No |
Disks
| Feature | Limit | Adjustable |
|---|
| System disks per instance | 1 | No |
| Data disks per instance | 15 | No |
| System disk capacity | 20 GB–25 TB | No |
| Ultra disk capacity | 20 GB–32 TB | No |
| All-flash disk capacity | 20 GB–25 TB | No |
| Expand disks | Available only for separately purchased pay-as-you-go disks | No |
Security groups
| Feature | Limit | Adjustable |
|---|
| Supported instance families | x86-based computing instance and ARM-based computing instance | No |
Snapshots
| Feature | Limit | Adjustable |
|---|
| Create a snapshot | Available only for instances that use cloud disks | No |
ELB (Edge Load Balancer)
| Feature | Limit | Adjustable |
|---|
| Connections per instance | 500,000 | No |
EIP
| Feature | Limit | Adjustable |
|---|
| Elastic IP addresses (EIPs) per user | 10 | Yes |
| Public bandwidth per EIP | 10 Gbps | No |
NAT gateway
| Feature | Limit | Adjustable |
|---|
| NAT gateways per user per node | 3 | Yes |
| Source Network Address Translation (SNAT) rules per instance | 256 | No |
| Destination Network Address Translation (DNAT) rules per instance | 200 | No |
VPC
| Feature | Limit | Adjustable |
|---|
| Virtual private clouds (VPCs) per user per node | 2 | Yes |
| vSwitches per user per node | 3 | Yes |
Network ACL
| Feature | Limit | Adjustable |
|---|
| Rules per instance | 400 | No |
NAS Collaborative Storage
| Feature | Limit | Adjustable |
|---|
| File systems per user per node | 2 | No |
| Mount points per file system | 1 | No |