Notes and Constraints on Using FlexusL Instances

FlexusL

• By default, you can create a maximum of 100 FlexusL instances in total in a region. To increase the quota, submit a service ticket.
• The number of FlexusL instances you can purchase may not reach 100 because of the quota limits of resources (EIPs, cloud servers, and vCPUs). To increase quotas of resources, submit a service ticket as prompted on the console.

ICP filing

You can apply for up to five ICP filings for a FlexusL instance.

Renewal/Unsubscription

A FlexusL instance is actually a package of resources. Resources in the package are unsubscribed and renewed together. The EVS disk, backup vault, HSS, and data package included in the package cannot be unsubscribed separately.

Resource configuration

A FlexusL instance package can have only one data disk, one CBR vault, and one HSS.

Package expansion

Currently, only data disks can be separately purchased and added to FlexusL instances. The system disk, CBR vaults, HSS, and data packages cannot be separately purchased and added to the package.

Package reduction

The EVS disk, CBR vault, HSS, and data package included in a FlexusL instance package cannot be disassociated or unsubscribed separately.

Specification changes

The capacity of the data disk and CBR vault packaged in a FlexusL instance can be expanded separately, but the vCPUs, memory, peak bandwidth, and data package of a FlexusL instance cannot be expanded or reduced separately.

Region

A FlexusL instance must use a private image that is in the same region as the instance, or the image cannot be selected.

Cloud server architecture

Only x86 is supported.

Image type

Only system disk private images are supported. Data disk private images and full-server private images are not supported.

• Linux system disk images only support the following image sources: free Huawei Cloud public Linux images, images created from FlexusL instances that are created using application images, and third-party private images you have imported. Other billed Linux images created from KooGallery images are not supported.
• Windows system disk images with the Bring Your Own License (BYOL) are supported.

Password reset plug-in

If a private image is created from a server on another cloud platform or downloaded from a third party, the private image may fail to be used to create a FlexusL instance or change the OS of an instance because the password reset plug-in is not installed on the image or the onekey_resetpasswd tag is missing. For details, see What Should I Do If a Private Image Cannot Be Used to Create a FlexusL Instance or Change the OS of an Instance Because the Password Reset Plug-in Is Not Installed on the Image or the onekey_resetpasswd Tag Is Missing?

Public network

• By default, an EIP is assigned for a FlexusL instance. It cannot be changed and will not be retained after the instance is released.
• FlexusL instances do not support IPv6 addresses.
• The peak bandwidth cannot be upgraded separately.
• Data packages cannot be purchased or upgraded separately.

  If the data package in a FlexusL instance does not meet your service requirements, you can buy a shared data package to reduce traffic costs. (Compared with the pay-per-use billing mode, a shared data package is more cost-effective.) For details, Can I Purchase a Data Package Separately?.

Private network

• The VPC cannot be changed after a FlexusL instance is created.
• By default, a private IP address is assigned for a FlexusL instance. The assigned private IP address cannot be changed and will not be retained after the instance is released.

System disk

• Only General Purpose SSD disks are supported.
• System disks cannot be added.
• An existing system disk cannot be attached.
• System disks cannot be expanded separately. You can expand the system disk capacity by upgrading the instance specifications. For details, see Upgrading a FlexusL Instance.
• System disks in FlexusL instances cannot be detached.

Data disk

• Only General Purpose SSD V2 disks are supported.
• Only one data disk can be added.
• Existing data disks cannot be attached to FlexusL instances.
• The capacity of data disks only can be expanded. It cannot be reduced.
• Data disks in FlexusL instances cannot be detached.

CBR

FlexusL instances only support server backup vaults.

Snapshot

FlexusL instance data cannot be rolled back using EVS disk snapshots on the FlexusL console. To back up and restore server data, use CBR. For details, see Backing Up and Restoring a FlexusL Instance.