Patent ID: 8930744
Filing Date: 2015-01-06
Classification: G06F,H04L

Abstract:
1. A method, in a data processing system comprising a storage system controller and a secondary storage system, for controlling access to storage volumes on the secondary storage system, comprising: determining, by the storage system controller, whether a first site computing device has sent a notification of a failure condition of a first site; in response to a determination that the notification of the failure condition of the first site has not been received, permitting, by the storage system controller, local workloads of a second site computing device to access storage volumes on the secondary storage system; and in response to a determination that the notification of the failure condition of the first site has been received, modifying, by the storage system controller, a mode of operation of the second site from a normal mode of operation to a failure mode of operation, wherein in the failure mode of operation, the storage system controller of the second site blocks at least a portion of requests from local workloads of the second site computing device to the secondary storage system.