Dynamically changing copy policy

A method for dynamically changing a copy policy associated with a cluster grid for tape storage virtualization, the method comprising:

• monitoring, by a tape volume cache (TVC) cluster which a client writes data to, one or more statuses of a plurality of clusters associated with the cluster grid, wherein one or more of the plurality of clusters are assigned one of a plurality of copy modes;
• detecting, by the TVC cluster, that at least one of the plurality of clusters having a Synchronous copy mode is unavailable;
• selecting, by the TVC cluster, an available second cluster of the plurality of clusters based on at least one of a data level of the available second cluster and a priority associated with a copy mode of the available second cluster;
• and
• changing, by the TVC cluster, the copy policy wherein the available second cluster is assigned the Synchronous copy mode.

A computer program product for dynamically changing a copy policy associated with a cluster grid for tape storage virtualization, the computer program product comprising:

• one or more computer readable storage media and program instructions stored on the one or more computer readable storage media, the program instructions comprising:
• program instructions to monitor one or more statuses of a plurality of clusters associated with the cluster grid, wherein one or more of the plurality of clusters are assigned one of a plurality of copy modes;
• program instructions to detect that at least one of the plurality of clusters, having a highest priority copy mode associated with the cluster grid, is unavailable;
• program instructions to select an available second cluster of the plurality of clusters;
• and
• program instructions to change the copy policy wherein the available second cluster is assigned the highest priority copy mode.

A computer program product for dynamically changing a copy policy associated with a cluster grid for tape storage virtualization, the computer program product comprising:

• one or more computer readable storage media and program instructions stored on the one or more computer readable storage media, the program instructions comprising:
• program instructions to monitor, by a tape volume cache (TVC) cluster which a client writes data to, one or more statuses of a plurality of clusters associated with the cluster grid, wherein one or more of the plurality of clusters are assigned one of a plurality of copy modes;
• program instructions to detect, by the TVC cluster, that at least one of the plurality of clusters having a Synchronous copy mode is unavailable;
• program instructions to select, by the TVC cluster, an available second cluster of the plurality of clusters based on at least one of a data level of the available second cluster and a priority associated with a copy mode of the available second cluster;
• and
• program instructions to change, by the TVC cluster, the copy policy wherein the available second cluster is assigned the Synchronous copy mode.

A computer system for dynamically changing a copy policy associated with a cluster grid for tape storage virtualization, the computer system comprising:

• one or more computer processors;
• one or more computer readable storage media;
• program instructions stored on the one or more computer readable storage media for execution by at least one of the one or more processors, the program instructions comprising:
• program instructions to monitor one or more statuses of a plurality of clusters associated with the cluster grid, wherein one or more of the plurality of clusters are assigned one of a plurality of copy modes;
• program instructions to detect that at least one of the plurality of clusters, having a highest priority copy mode associated with the cluster grid, is unavailable;
• program instructions to select an available second cluster of the plurality of clusters;
• and
• program instructions to change the copy policy wherein the available second cluster is assigned the highest priority copy mode.