< Previous  | TOC | Index | Next  >

Taking over from an original Primary

The takeover procedure involves transferring the Primary role from an original Primary to a Secondary. When the original Primary fails or is destroyed because of a disaster, the takeover procedure enables you to convert a consistent Secondary to a Primary. The takeover of a Primary role by a Secondary is useful when the Primary experiences unscheduled downtimes or is destroyed because of a disaster.

Use the Takeover task to transfer the Primary role from an original Primary to a Secondary. The Takeover task must be performed on the Secondary host. The Takeover task fails when performed on a Primary host.

The Takeover task performs the following functions on the RDS to which the original Primary belongs:

• Converts the Secondary RVG to a Primary RVG.
• Removes the original Primary from the RDS.
• Enables the fast-failback feature on the new Primary depending on the failback option that you select from the Takeover task. For information on failing back, see Failing back to the original Primary.

For details on taking over from the original Primary, refer to Transferring the Primary role.