Logical volume migration in single server high availability environments

A method comprising:

• operating a Peripheral Component Interconnect Express interface of a Redundant Array of Independent Disks controller to access another Peripheral Component Interconnect Express interface at another Redundant Array of Independent Disks controller, wherein the controller is operable to communicate with the other controller via a Serial Attached Small Computer System Interface port;
• directing the interface to synchronize with Disk Data Format information from a Peripheral Component Interconnect Express Inbound Map of the other interface;
• detecting that the other controller has failed;
• and
• utilizing the Disk Data Format information to migrate a logical volume from the other controller to the controller.

A system comprising:

• a Redundant Array of Independent Disks controller comprising:
• a Peripheral Component Interconnect Express interface;
• a Serial Attached Small Computer System Interface port operable to communicate with another Redundant Array of Independent Disks controller;
• and
• a means for directing the interface to access another Peripheral Component Interconnect Express interface at the other controller, synchronizing with Disk Data Format information from a Peripheral Component Interconnect Express Inbound Map of the other interface, detecting that the other controller has failed, and utilizing the Disk Data Format information to migrate a logical volume from the other controller to the controller.