Server and fast fault recovery method for cache cluster

The invention provides a server and a fast fault recovery method for cache clusters. The server comprises a first cache cluster, a second cache cluster, a cluster fault management module and a cold backup transfer node, wherein the cluster fault management module is configured to monitor whether the first cache cluster has a preset fault or not; when a preset fault occurs, cloud storage volumes are unbound with the cold backup transfer node and bound with the second cache cluster, the cold backup transfer node is provided with a plurality of directories corresponding to the cloud storage volumes in a one-to-one mode, the number of the cloud storage volumes is the same as the number of instances of the first cache cluster; when when the cloud storage volumes are bound with the cold backup transfer node, backup data from the first cache cluster is stored, and the second cache cluster is provided with instances corresponding to the first cache cluster; a starting instruction is sent to the second cache cluster;