Speculative data mirroring apparatus method and system

An apparatus for bidirectional speculative data mirroring, the apparatus comprising:

• a first storage control module configured to conduct synchronous storage operations including lock operations on a first storage volume;
• a second storage control module configured to conduct synchronous storage operations including lock operations on a second storage volume;
• a first mirror control module configured to initiate a lock operation on a storage region within the second storage volume, the first mirror control module further configured to send data corresponding to at least one write operation to the first storage volume without waiting for feedback regarding the lock operation on the second storage volume;
• and
• a second mirror control module configured to initiate a lock operation on a storage region within the first storage volume, the second mirror control module further configured to send data corresponding to at least one write operation to the second storage volume without waiting for feedback regarding the lock operation on the first storage volume.

A method for speculative data mirroring, the method comprising:

• inserting data into a rollback log, the data corresponding to a write operation to a storage region within a source volume;
• initiating a synchronous operation on a corresponding storage region within a target volume;
• and
• sending the data corresponding to the write operation to the target volume without waiting for feedback regarding the synchronous operation.

An apparatus for speculative data mirroring, the apparatus comprising:

• receiving means configured to receive data corresponding to a write operation to a storage region within a source volume;
• initiating means configured to initiate a synchronous operation on a corresponding storage region within a target volume;
• and
• messaging means configured to send the data corresponding to the write operation to the target volume without waiting for feedback regarding the synchronous operation.

A system for speculative data mirroring, the system comprising:

• a source storage controller operably connected to a source volume;
• a target storage controller operably connected to a target volume;
• a rollback log configured to recieve data corresponding to a write operation to a storage region within the source volume;
• a storage control operably connected to the target storage controller, the storage control module configured to initiate a synchronous operation on a corresponding storage region within the target volume, the synchronous operation comprising a lock operation;
• and
• a mirror control module operably connected to the source storage controller, the mirror control module configured to send the data corresponding to the write operation to the target volume prior to recieving acknowledgement of the lock operation;
• where the synchronous operation comprises a lock operation and further comprising a mirror control module operably connected to the source storage controller, the mirror control module configured to send the data corresponding to the write operation to the target volume prior to receiving acknowledgement of the lock operation.

A computer readable storage medium comprising computer readable program code for conducting a method of speculative data mirroring, method comprising:

• receiving into a rollback log data corresponding to a write operation, the write operation directed to a storage region within a source volume;
• initiating a synchronous operation on a corresponding storage region within a target volume;
• and
• sending the data corresponding to the write operation to the target volume prior to receiving acknowledgement of the synchronous operation.