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Step 1: Configure Basic Settings

Updated on 2025-01-27 GMT+08:00

Accessing the ECS Creation Page

  1. Log in to the management console.
  2. Under Computing, click Elastic Cloud Server.
  3. Click Create ECS.

    The page for creating ECSs is displayed.

Basic Settings

  1. Confirm the region.

    If the region is incorrect, click in the upper left corner of the page to select your region.

  2. Select an AZ.

    An AZ is a physical location that uses independent power supply and networks. AZs in the same region can communicate with each other over an intranet.

    • To enhance application availability, create ECSs in different AZs.
    • To shorten network latency, create ECSs in the same AZ.
    NOTE:

    During the creation process, you can select a random AZ. The system will use a hash algorithm to select an AZ as the default AZ based on your universally unique identifier (UUID).

    The available ECS types and flavors vary depending on AZs. To view all supported ECS types and flavors on the cloud service platform, set AZ to Random. Then, the system automatically allocates an AZ according to your selected ECS flavor.

    For example, S3 ECSs are available only in AZ1; S1 ECSs are available for sale in AZ2 and AZ3 and have been sold out in AZ1. If you set AZ to Random, you can view both S3 and S1 ECSs. If you create an S3 ECS, the system automatically allocates it to AZ1. If you create an S1 ECS, the system randomly allocates it to AZ2 or AZ3.

  3. Set DeH.

    This configuration is optional. This parameter is available only when you click Create ECS on the Dedicated Host page. It is unavailable when you click Create ECS on the Elastic Cloud Server page.

    DeH refers to physical server resources dedicated for a specified user. You can deploy ECSs on DeHs for better isolation, security, and performance of your ECSs. You can continue using your existing server software licenses of ECSs on DeHs to reduce costs. For more details, see Dedicated Host User Guide.

  4. Set Specifications.

    The cloud platform provides various ECS types for different application scenarios. You can choose from existing ECS types and flavors in the list. Alternatively, you can enter a flavor or specify vCPUs and memory size to search for the flavor suited to your needs.

    NOTE:
    • Before selecting an ECS type, learn about various types of ECSs and their precautions. For details, see ECS Types.
    • When purchasing an ECS, sold-out vCPU and memory resources cannot be selected. You can select Hide sold-out specifications to hide specifications that have been sold out.
    • Local Disk: specifies the local storage of the physical server where the ECS is deployed. Only Hard Disk Driver (HDD) disks are supported. If the ECS of the selected type (such as Disk-intensive) uses local disks, the system automatically attaches the local disks to the ECS and displays the information of the local disks.

      For example, if Local Disk is 3x1800 GiB (HDD), three HDDs are attached to the ECS and the capacity of each HDD is 1800 GiB.

  5. Select an image.
    • Public image

      A public image is a standard, widely used image. It contains an OS and preinstalled public applications and is available to all users. You can configure the runtime environment or software in the public image as needed.

    • Private image

      A private image is an image available only to the user who created it. It contains an OS, preinstalled public applications, and the user's private applications. Using a customized private image, you can create ECSs tailored to your needs in batches.

      NOTE:
      • If you use a full-ECS image to create an ECS, the EVS disks associated with the full-ECS image do not support the function of creating disks using a data disk image.
      • If a full-ECS image is in Normal state and the system displays message "Available in AZx", the full-ECS image can be used to create ECSs in this AZ only, and the encryption attributes of the system and data disks of the created ECSs are the same as those of the system and data disks specified in the full-ECS image. Additionally, the SCSI, data encryption, and sharing attribute settings of the system and data disks cannot be modified during ECS creation.
      • If a full-ECS image is in Normal state but the system does not display message "Available in AZx", the full-ECS image can be used to create ECSs in the entire region, and the encryption attributes of the system and data disks of the created ECSs are the same as those of the system and data disks specified in the full-ECS image. Additionally, the SCSI, data encryption, and sharing attribute settings of data disks can be modified during ECS creation.
      • For more details about how to use CSBS backups to create images, see "Using Backups to Create Images" in Cloud Server Backup Service User Guide and "Creating a Full-ECS Image Using a CSBS Backup" in Image Management Service User Guide.
      • To ensure that NIC multi-queue is enabled on an ECS created using a private image, configure NIC multi-queue when creating such a private image. NIC multi-queue routes NIC interrupt requests among multiple vCPUs for higher network packets per second (PPS) and bandwidth.

        For details, see "How Do I Set NIC Multi-Queue Feature of an Image?"

    • Shared image

      A shared image is a private image shared by another user.

  6. (Optional) Set License Type.

    Specifies a license type for using an OS or software. This parameter is displayed only when the selected image is billed.

    • Using License from the System

      Allows you to use the license provided by the cloud service platform. Obtaining the authorization of such a license is billed.

    • Bring your own license (BYOL)

      Allows you to use your existing OS license. In such a case, you do not need to apply for a license again.

    For more information about license types, see License Types.

  7. Set System Disk and Data Disk if required.
    • System disk

      For details about the disk types supported by ECSs, see EVS Disks.

      • If the image based on which an ECS is created is not encrypted, the system disk of the ECS is not encrypted. If the image based on which an ECS is created is encrypted, the system disk of the ECS is automatically encrypted. For details, see (Optional) Encryption-related parameters.
      • Encryption: indicates that the system disk is encrypted if you select this option. For details, see (Optional) Encryption-related parameters.
    • Data disk

      You can create multiple data disks for an ECS and enable required functions for each data disk. During the creation process, you can add a maximum of 23 data disks for each ECS and customize the disk size as needed.

      Click Show and set the following functions if required:

      • SCSI: indicates that the device type of the data disk is SCSI if you select this option. For more information about SCSI disks and ECSs that can have SCSI disks attached, see EVS Disks.
      • Share: indicates that the EVS disk is sharable if you select this option. Such an EVS disk can be attached to multiple ECSs.
      • Encryption: indicates that the data disk is encrypted if you select this option. For details, see (Optional) Encryption-related parameters.
    • (Optional) Encryption-related parameters

      To enable encryption, click Create Xrole to assign KMS access permissions to EVS. If you have rights granting permissions, assign the KMS access permissions to EVS. If you do not have the required permissions, contact the user who has the Security Administrator permissions to assign the KMS access permissions.

      • Encryption: indicates that the EVS disk has been encrypted.
      • Create Xrole: assigns KMS access permissions to EVS to obtain KMS keys. After the permissions are assigned, follow-up operations do not require assigning permissions again.
      • Xrole Name: set to EVSAccessKMS, which means that permissions have been assigned to EVS to obtain KMS keys for encrypting or decrypting EVS disks.
      • KMS Key Name: specifies the name of the key used by the encrypted EVS disk. You can select an existing key, or click Create KMS Key and create a new one on the KMS console. The default value is evs/default.
      • KMS Key ID: specifies the ID of the key used by the encrypted data disk.
  8. Click Next: Configure Network.

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