Overview

You can change the billing mode if it no longer meets your needs. Table 1 lists the changeable DRS billed items.

**Table 1** Changeable DRS billed items
Billed Item	Change Description	Reference
Configuration fee (mandatory)	DRS tasks can be changed from pay-per-use to yearly/monthly, but cannot be changed from yearly/monthly to pay-per-use. Migration tasks: Only the pay-per-use billing is supported. Synchronization tasks: Only single-AZ tasks that are not frozen and in the incremental state can be changed from pay-per-use to yearly/monthly. DR tasks: Only tasks that are not frozen and in the DR state can be changed from pay-per-use to yearly/monthly. For dual-active DR, the billing mode can be changed from pay-per-use to yearly/monthly only when both the forward and backward subtasks are in DR state.	Pay-per-Use to Yearly/Monthly
EIP fee (optional)	A yearly/monthly EIP can be changed to a pay-per-use EIP billed by bandwidth after the yearly/monthly subscription ends. A pay-per-use EIP billed by bandwidth can be changed to a yearly/monthly EIP. Pay-per-use EIPs billed by bandwidth can be changed to pay-per-use EIPs billed by traffic, and pay-per-use EIPs billed by traffic can be changed to pay-per-use EIPs billed by bandwidth. For details, see Figure 2.	For details the EIP fee, see EIP Billing.