Elastic Compute Service:Create a disk

Procedure

1. Log on to the ECS console.

2. In the left-side navigation pane, choose Storage & Snapshots > Block Storage (Disks) .

3. In the upper-left corner of the Disks page, click Create Disk.

4. On the disk buy page that appears, configure the parameters described in the following table.

   Parameter	Description
   Attach	Specify whether to attach the disks that you want to create to an ECS instance. Not Attach: creates disks without attaching them to ECS instances. If you select Not Attach, only pay-as-you-go disks can be created. The disks and the ECS instances to which you want to attach the disks must reside in the same zone. Proceed with caution when you specify the Region and Zone parameter. Note If you want to partition a disk in the ECS console after the disk is created, select Not Attach. After the disk is created, you can partition the disk when you attach the disk to a Linux instance. For more information, see Attach a data disk. Attach to ECS Instance: creates disks and attaches the disks to a specific ECS instance. If you select Attach to ECS Instance, you must specify the ECS Instance parameter by selecting a destination region and an ECS instance.
   Billing Method	Specify the billing method of the disks. Pay-as-you-go: Pay-as-you-go disks can be attached to subscription or pay-as-you-go ECS instances. Subscription: Subscription disks must be attached to subscription ECS instances.
   Storage	Select a disk category and specify the capacity per disk. Configure the following parameters based on your business requirements: Performance Level: You can specify performance levels only for enhanced SSDs (ESSDs). You can select a performance level based on the capacity of an ESSD. The performance of an ESSD varies with the capacity and performance level of the ESSD. For more information, see ESSDs. Create from Snapshot: Select a snapshot to create disks. After you configure this parameter, the created disks contain data from the snapshot. For more information, see Create a disk from a snapshot. Multi-attach: You can select this option to enable the multi-attach feature for ESSDs. This way, you can attach each created ESSD to multiple ECS instances in the same zone. For more information, see Enable multi-attach. Disk Encryption: Disk encryption is applicable to scenarios that require data security and regulatory compliance. If you select this option, data stored on the created disks is automatically encrypted.
   Quantity	Specify the number of disks that you want to create. Note You can attach up to 64 data disks to an ECS instance. The maximum number of disks that can be attached to an ECS instance varies based on the instance type. For more information, see Overview of instance families. When you create disks, pay attention to the number of disks to prevent resource waste. Disks have capacity quotas. The total capacity of the disks that you want to create cannot exceed your remaining capacity quota. Use the following formula to calculate the total disk capacity: Total disk capacity = Capacity per disk × Number of disks. After you select a disk category, the purchased capacity and the remaining capacity quota of the disk category are displayed on the disk buy page. You can go to the Quota Center to view and adjust your disk capacity quotas. For more information, see Manage quotas.
   Release	Specify whether to delete the automatic snapshots of the disks when the disks are released or whether to release the disks when the ECS instance to which they are attached is released. This parameter is available only if you set the Attach parameter to Attach to ECS Instance and the Billing Method parameter to Pay-as-you-go.
   Terms of Service	Read and select ECS Terms of Service.
   Others (Optional)	Specify the Disk Name, Description, Tags, and Resource Group parameters for easy search and management.

5. Confirm the configurations and fees, click Preview, and then proceed as prompted to create the disks.

   After the disks are created, you can view the disks on the Disks page. However, the disks cannot be directly used on ECS instances. You must perform specific operations before you can use the disks on ECS instances.