Log in to the TDSQL Purchase Page to purchase an instance. You can purchase up to 64 shards at a time, and if you need more, please submit a ticket.
Initialization is required for the purchased instance to function normally.
An instance upgrade operation will upgrade the current TDSQL instance to a higher specification; however, as a distributed database is composed of multiple shards, instance upgrade schemes actually include "adding new shards" and "scaling up shards". During upgrade, the service will not be interrupted, but some shards may become read-only for just seconds, so you are recommended to upgrade your instance during off-hours.
Log in to the TDSQL Console. In the instance list, click an instance name or Manage in the "Operation" column to go to the instance management page.
Select the Shard Management tab, click Add Shard in the "Operation" column.
In the pop-up dialog box, select specifications for the new shard.
This operation upgrades a single shard to a higher specification without adding new shards.
Go to the instance management page, select the Shard Management tab, and click Adjust Shard Configuration in the "Operation" column.
Upgrade fee = (unit price of target specification - unit price of original specification) x remaining validity period