(Optional) Step 2: Buy a Data Disk

Buying a Data Disk

1. Query the data disk information.
   1. Log in to the console as the IAM administrator.
   2. Click in the upper left corner of the management console, select a region or project, click in the upper left corner of the page, and choose Storage > Elastic Volume Service.
   3. On the Disks tab, click the name of an EVS disk to go to tis details page.
   4. View the Name, AZ, Capacity (GiB), and Function of an EVS disk.
      Figure 1 Data disk information
      
   5. Check whether the data disk is in the same AZ as the existing ECS and whether the disk capacity is 100 GB or the above.
      • If yes, skip this step and go to (Optional) Step 3: Attach a Data Disk.
      • If no, go to 2 and purchase a data disk.

2. Return to the EVS page and click Buy Disk in the upper right corner of the page.
3. On the displayed page, set the disk purchase parameters.

   Table 1 Parameters for purchasing a disk

   Parameter	Description
   Region	Select the region the same as the one you specified for the ECS in (Optional) Step 1: Buy an ECS.
   AZ	Select the AZ you selected for the ECS you bought in (Optional) Step 1: Buy an ECS.
   Attach To Server	Select Now, click Select Server, and select the ECS purchased in (Optional) Step 1: Buy an ECS or other ECS you prepared, and click OK.
   Billing Mode	Select a billing mode based on your needs. You are advised to select the same billing mode for the data disk and the ECS it is used for.
   Data Source	Configure this parameter based on your needs.
   Disk Specifications	Disk type: Set it as required. Capacity (GiB): Minimum capacity for the data disk is 100 GiB. Select a data disk that meets the requirements.
   Selected Specifications	This area displays the configuration information of the selected disk. No configuration is required.
   Automatic Backup	Configure this parameter based on your needs.
   More	Configure this parameter based on your needs.
   Enterprise Project	Configure this parameter as required. If there is no special requirement, select the default enterprise project.
   Disk Name	Configure this parameter as required.
   Quantity	Configure this parameter as required.

4. Check the configurations and click Next.
5. Complete the purchase as prompted.
   CAUTION:

   You do not need to initialize the disk after the purchase. This will be done automatically during Network Connection Configuration.