Cluster scale-out
Cluster scale-out means to increase the number of CUs. You can scale out a cluster in the Stream Compute Service console as instructed in Scaling Out a Cluster. During cluster scale-out, you need to pay for the configuration adjustment according to the remaining validity period of the cluster. The calculation rule for the scale-out fees of monthly subscribed clusters is as follows: Scale-out fees = number of new CUs x monthly unit price of CU x number of scale-out days / (365 / 12)
Scale-out days = cluster expiration time - current time
Note
Scale-out doesn't affect the expiration time of the cluster.
You can increase a maximum of 300 CUs in a single scale-out and perform scale-out multiple times.
By default, a single cluster supports a maximum of 800 CUs to ensure machine performance. To support more CUs, contact us. Cluster scale-in
When you scale in a cluster, the system will calculate the price difference according to the following formula:
Refund = residual value of original configuration - purchase price of new configuration
The details are as follows:
Residual value of original configuration: Effective order amount of original configuration - used value of original configuration.
Effective order amount of original configuration: The amount paid for the currently effective order, excluding discounts and vouchers.
Used value of original configuration: Fees will be deducted by month for the full months elapsed as of the date of scale-in and by day for the remaining part less than a month. The use time is accurate to seconds.
Purchase price of new configuration: Current official price of the new configuration x remaining validity period.
Note
Discounts and vouchers are not refundable.
The refund will be credited to your account at the ratio of cash to free credit paid upon purchase.
If the refund amount is less than or equal to 0, it will be calculated as 0.