How Do Yearly/Monthly Resource Packages Function When I Have Bought More Than One?

Your resource package's capacities are accumulative but their validity periods are independent from each other.

Even though your purchased resource package is still valid, a newly bought resource package takes effect upon its purchase, instead of waiting until the earlier one expires. During the period in which the two resource packages are both valid, the capacity you enjoy is the capacity sum of the two.

For example, if a tenant has bought two one-month 100 GB resource packages at the same time, the tenant has 200 GB backup capacity for one month. Or, if the tenant has bought a one-month 100 GB resource package and then a two-month 100 GB resource package at the same day, the tenant has 200 GB backup capacity at the first month and 100 GB backup capacity for the second month.