Sequential write of random workload in mirrored performance pool environments

A computer program product for writing data to a mirrored storage system comprising a system controller comprising at least one processor, one or more memories, one or more computer readable storage media, a first storage system comprising a primary controller and a first storage and a second storage system comprising a secondary controller and a second storage, wherein the second storage contains an image of data stored in the first storage, the computer program product comprising a non-transitory machine-readable storage medium having program instructions embodied therewith, the program instructions executable by the system controller to perform a method comprising:

• sending, by the system controller, the data to the primary controller of the first storage system and to the secondary controller of the second storage system;
• instructing, by the system controller, the primary controller to write the data to the first storage of the first storage system in an ordered manner;
• instructing, by the system controller, the secondary controller to write the data sequentially to a data area on the second storage of the second storage system;
• reorganizing, by the system controller, the sequentially written data in the data area of the second storage system into the image on the second storage;
• and
• the system controller instructing the secondary controller to erase a location of the data being written sequentially and mark the erased location.

A computer system for writing data to a mirrored storage system comprising a system controller comprising a computer comprising at least one processor, one or more memories, one or more computer readable storage media having program instructions, a first storage system comprising a primary controller and a first storage and a second storage system comprising a secondary controller and a second storage, wherein the second storage contains an image of data stored in the first storage, the program instructions of the computer system executable by the computer comprising:

• sending, by the system controller, the data to the primary controller of the first storage system and to the secondary controller of the second storage system;
• instructing, by the system controller, the primary controller to write the data to the first storage of the first storage system in an ordered manner;
• instructing, by the system controller, the secondary controller to write the data sequentially to a data area on the second storage of the second storage system;
• reorganizing, by the system controller, the sequentially written data in the data area of the second storage system into the image on the second storage;
• and
• the system controller instructing the secondary controller to erase a location of the data being written sequentially and mark the erased location.