Patent ID: 11860719
Assignee: HUAWEI TECHNOLOGIES CO., LTD.
Field: Computer technology (Electrical engineering)
Classification: CPC G | IPC G

Claim 0:
1. A method for implementing storage service continuity by a front-end interface card in a storage system, wherein the method comprises:
detecting a status of a first storage controller that is in a plurality of storage controllers of the storage system;
selecting a second storage controller from the storage controllers for a host to process an access request when the first storage controller is in an abnormal state due to being offline, a power failure, an upgrade to the first storage controller, or unresponsiveness;
sending, to the host when the first storage controller is in the abnormal state, an access request error message reporting an error status of the access request; and
receiving, from the host and in response to the access request error message, the access request,
wherein the second storage controller is in the storage controllers and is different distinct from the first storage controller.