Maximizing Use of Storage in a Data Replication Environment

摘要

Mechanisms for controlling access to storage volumes on the secondary storage system is provided. A determination is made as to 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, secondary workloads of a second site computing device are permitted to access storage volumes on the secondary storage system. In response to a determination that the notification of the failure condition of the first site has been received, a mode of operation of the second site is modified from a normal mode of operation to a failure mode of operation. In the failure mode of operation, the storage system controller of the second site blocks at least a portion of access requests from secondary workloads of the second site computing device.

主权项

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:
associating, by the storage system controller, priority values with a plurality of logical volumes in the secondary storage system, wherein each logical volume has an associated volume attribute specifying whether the corresponding logical volume may be accessed by local workloads during the normal mode of operation; determining, by the storage system controller, whether a first site computing device has sent a notification of a failure condition of a first site; and 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 a subset of the storage volumes on the secondary storage system based on the priority values of the plurality of logical volumes in the secondary storage system.