Efficient mirroring of data across storage controllers

A method comprising:

• multicasting an I/O data associated with a host computing device through a multicast device associated with a storage controller coupled to another storage controller through an appropriate bus in a redundant configuration;
• generating, through the multicasting, a data set and another data set associated with the I/O data, the data set and the another data set having identical data content but differing control information, and the control information including a routing information associated with at least one of the data set and the another data set;
• writing the identical data content of the data set to the storage controller;
• routing the another data set to the another storage controller through the bus;
• and
• writing the identical data content of the another data set to the another storage controller.

A storage system comprising:

• a host computing device to generate I/O data;
• a first storage controller including a multicast device associated therewith to multicast the I/O data therethrough;
• a bus;
• a second storage controller coupled to the first storage controller through the bus such that the multicast I/O data is configured to be mirrored across the first storage controller and the second storage controller, the first storage controller and the second storage controller including memories associated therewith to store the mirrored I/O data thereat;
• and
• a storage device associated with both the first storage controller and the second storage controller,
• wherein at least one of the first storage controller and the second storage controller is configured to transmit an early write status message back to the host computing device following the successful minoring of the I/O data prior to the I/O data being written to the storage device through one of the first storage controller and the second storage controller.