Method for testing implicit beamforming performance of a multiple-input multiple-output radio frequency data packet signal transceiver device under test. The spinal cannula includes a fluid delivery line operably connected to the proximal end portion of the deployable cannula member, and a fluid delivery line including a second lumen in fluid communication with the first lumen. The first write operation is a change to a first data location. Upon determining that the requested data block is not currently cached in the cloud controller, the cloud controller sends a peer cache request for the requested data block to a peer cloud controller in the distributed filesystem.