Help Center> Elastic Volume Service> Service Overview> Billing> Billing for EVS Disks
Updated on 2024-06-18 GMT+08:00
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Billing for EVS Disks

Billing Items

EVS disks are billed based on the disk type, size, and usage duration. For details, see EVS Pricing Details.

  • Billing starts: You will be billed for the EVS disks right after you have purchased them, regardless of whether they are attached or not.
  • Billing stops:
    • For a yearly/monthly disk, the billing stops after the disk is successfully unsubscribed from, and the refund is calculated as follows: Refund = Your actual payment - Amount due - Handling fees. For more information, see How Do I View the Refund for My Resource Unsubscription?
    • For a pay-per-use disk, the billing stops after the disk is successfully deleted.

Billing Modes

EVS disks can be billed on a yearly/monthly or pay-per-use basis.

  • Yearly/Monthly is a prepaid payment method.
  • Pay-per-use is a postpaid payment model. Your disk is billed by the second, and you are billed for a minimum of 60 minutes each time. If the usage is less than an hour, you are billed based on the actual usage period consumed.

Billing Involved in Configuration Modifications

Item

Yearly/Monthly

Pay-per-Use

Capacity change
  • EVS does not support the reduction of disk capacities.
  • EVS supports the expansion of disk capacities. Additional capacities need to be paid.
    NOTE:

    The expiration time of the EVS disk remains unchanged after the capacity expansion.
  • EVS does not support the reduction of disk capacities.
  • EVS supports the expansion of disk capacities.

Multiple pieces of billing records will be generated within a billing cycle (an hour) when an expansion succeeded.

For example, if you expand the capacity of an EVS disk from 100 GiB to 200 GiB at 01:30:01, two billing records will be generated in the billing cycle from 01:00:00 to 02:00:00. One is the billing record generated for the 100 GiB from 01:00:00-01:30:00, and the other is the billing record generated for the 200 GiB from 01:30:01-02:00:00.

Performance change

Throughput and IOPS cannot be billed on a yearly/monthly basis.

For yearly/monthly disks that allow you to configure performance, their capacities are billed on a yearly/monthly basis, and their performance is billed pay per use. Pay-per-use pricing applies after a performance change.

Throughput and IOPS can be billed on a pay-per-use basis.

Pay-per-use pricing applies after a performance change.

Disk type change

You need to pay for the price difference incurred by a disk type change.

NOTE:

The expiration time of the EVS disk remains unchanged after a disk type change.

Pay-per-use pricing of the new disk type applies.

Billing mode change

EVS supports the billing mode change from pay-per-use to yearly/monthly.

For details, see From Pay-per-Use to Yearly/Monthly.

NOTE:

Non-shared, pay-per-use disks cannot be changed to yearly/monthly billing separately. They must be changed together with servers. After the change, they have the same expiration times as the servers.

EVS supports the billing mode change from yearly/monthly to pay-per-use.

For details, see From Yearly/Monthly to Pay-per-Use.

Expiration

Before a yearly/monthly disk expires, if you do not renew the disk or auto renewal is enabled but fails, the disk will enter the retention period after expiration. For details, see Impacts and Usage Suggestions on Yearly/Monthly Disks Before and After Expiration.

  • During the retention period, if you renew the disk, the disk will be unfrozen.
  • During the retention period, if you do not renew the disk, the disk will be released after the retention period ends.

Overdue Payment

If your account is not topped up after the account balance falls below zero, your account is in arrears and your pay-per-use disk will enter the retention period. For details, see Impacts and Usage Suggestions on Pay-per-Use Disks Before and After Account Arrears.

  • During the retention period, if you top up your account, the disk will be unfrozen.
  • During the retention period, if you do not top up your account, the disk will be released after the retention period ends.
Parent topic: Billing