After you add a host to an ApsaraDB MyBase dedicated cluster, you can change the host specifications if the host performance cannot meet your business requirements.

Prerequisites

Note

  • Host specifications cannot be downgraded.
  • If one of the following situations happens, you cannot upgrade the host specifications. The Upgrade button is dimmed.
    • An instance is being created on the host.
    • An instance that runs on the host is being migrated.
    • The host is locked because it expires.
  • The host specification before the upgrade and the host specification after the upgrade must correspond to the same host type. For more information about host specifications, see Instance types of hosts.
  • When you upgrade host specifications, you must increase both the CPU cores and the memory. You cannot increase only the CPU cores or the memory.
  • The minimum interval at which you upgrade the specifications of the same host is 10 minutes.
  • After you upgrade host specifications, the host and the instances that run on the host are restarted.
    Note
    • When the host is being restarted, the primary instance that runs on the host becomes a secondary instance. This may cause one or two transient connections.
    • The time that is required to restart the host varies based on the duration of the primary/secondary switchover.

Host specifications that can be upgraded

Host type Host series Host specification and storage Host specification code
General-purpose host that uses ESSDs g6 8 cores, 32 GB memory, ESSDs mssql.cluster.host.g2xlarge
16 cores, 64 GB memory, ESSDs mssql.cluster.host.g4xlarge
4 cores, 16 GB memory, ESSDs, no additional fees mssql.host.gxlarge
8 cores, 32 GB memory, ESSDs, no additional fees mssql.host.g2xlarge
16 cores, 64 GB memory, ESSDs, no additional fees mssql.host.g4xlarge
g5 64 cores, 256 GB memory, ESSDs mssql.cluster.host.g16xlarge
Memory optimized host that uses ESSDs r6 8 cores, 64 GB memory, ESSDs mssql.cluster.host.r2xlarge
16 cores, 128 GB memory, ESSDs mssql.cluster.host.r4xlarge
24 cores, 192 GB memory, ESSDs mssql.cluster.host.r6xlarge
32 cores, 256 GB memory, ESSDs mssql.cluster.host.r8xlarge
8 cores, 64 GB memory, ESSDs, no additional fees mssql.host.r2xlarge
16 cores, 128 GB memory, ESSDs, no additional fees mssql.host.r4xlarge
24 cores, 192 GB memory, ESSDs, no additional fees mssql.host.r6xlarge
32 cores, 256 GB memory, ESSDs, no additional fees mssql.host.r8xlarge
r5 64 cores, 512 GB memory, ESSDs mssql.cluster.host.r16xlarge
64 cores, 512 GB memory, ESSDs, no additional fees mssql.host.r16xlarge
Compute optimized host that uses ESSDs c6 8 cores, 16 GB memory, ESSDs mssql.cluster.host.c2xlarge
16 cores, 32 GB memory, ESSDs mssql.cluster.host.c4xlarge
32 cores, 64 GB memory, ESSDs mssql.cluster.host.c8xlarge
8 cores, 16 GB memory, ESSDs, no additional fees mssql.host.c2xlarge
16 cores, 32 GB memory, ESSDs, no additional fees mssql.host.c4xlarge
32 cores, 64 GB memory, ESSDs, no additional fees mssql.host.c8xlarge
Note You can view the host specifications on the Host Information tab in the console. For more information, see .

Pricing

The following formulas are used to calculate the fees for upgrading host specifications:

Upgrade fees = Total fees of the new specifications for the remaining subscription period - Total fees of the original specifications for the remaining subscription period. Total fees of the new specifications for the remaining subscription period = Monthly fees of the new specifications/30/24 x Unused hours. Total fees of the original specifications for the remaining subscription period = Monthly fees of the original specifications/30/24 x Unused hours.

For example, the monthly charges of the new specifications are USD 14,400, the monthly charges of the original specifications are USD 7,200, and the host is to expire 50 days later. In this case, the following equation is used to calculate the upgrade fees: (14400/30/24 x 50 x 24) - (7200/30/24 x 50 x 24) = 12000.

Procedure

  1. Log on to the ApsaraDB MyBase console.
  2. In the upper-left corner of the page, select the region where you want to create a dedicated cluster.
  3. In the left-side navigation pane, click Hosts.
  4. Find the host that you want to manage and choose More > Upgrade in the Actions column.
    s
  5. On the Upgrade/Downgrade page, configure Host Instance Type.
  6. Read and agree to the terms of the service. Then, click Buy Now and complete the payment.
    Note You can view the changed host specifications on the Host Information tab in the console.