Abstract: An apparatus, system, and process are disclosed for maintaining data in an electronic storage array during multiple, concurrent drive failures. A first drive failure is recognized and the storage system controller subsequently enters a first operating mode. The storage system controller then recognizes a second drive failure and enters a second operating mode, which is different from the first operating mode, in response to the second drive failure. The second operating mode allows the storage system controller and a recovery module to access the data of the second failed drive in a controlled manner in order to attempt to recover the data on the first failed drive. Also, a pinned data module may allow write data to be written to a pinned data drive, instead of a failed drive, while the storage system controller is operating in the second operating mode.

Abstract: A cored wire electrode with a sheath and a multiplex powder composite for use in a thermal spray or welding apparatus. The composite comprises micron-sized particles and sub-micron sized particles, including nano-scale particles, the particles mechanically cooperating to promote smooth powder flow, which facilitates compaction of the cored wire electrode. The invention also includes a method of manufacture of the cored wire electrode and its method of use.

Abstract: A thermal spray or welding apparatus including a cored wire electrode with a sheath and a multiplex powder composite. The composite comprises micron-sized particles and sub-micron sized particles, including nano-scale particles, the particles mechanically cooperating to promote smooth powder flow, which facilitates compaction of the cored wire electrode. The invention also includes a method of manufacture of the apparatus including the cored wire electrode and its method of use to deposit a low porosity coating with high levels of alloyed refractory elements that is adherent and low in oxide content.

Abstract: The present invention is directed to a system in method implemented in a data storage system that provides a status corresponding to a command initiated by a host server to the host server within a guaranteed maximum command response time. In one aspect, the system and method of the present invention accomplish this by associating a time stamp with the command before it is distributed to a number of data storage devices to be executed. The progress of the command's execution is monitored at an interval less than the maximum command response time. If the present invention determines that the command will not complete within the maximum command response time, the system method of the present invention sends a corresponding status to the host server.

Abstract: The present invention ensures system configuration data structure coherency across multiple controllers in a data storage system. To accomplish this, a controller that detects any change in the system configuration of the data storage system, must first reserve a predetermined device before it can modify its own system configuration data structure, and before it can notify any other controllers of the change, such that they can modify their respective system configuration data structures. After such modifications the detecting controller will release the reservation of the predetermined device. In this manner, updates to each respective controller's system configuration data structure are synchronized, ensuring system configuration data structure coherency across multiple controllers in the data storage system.

Abstract: A multiplex powder composite for use in a cored wire electrode to be deployed in a thermal spray or welding apparatus. The composite comprises micron-sized particles and sub-micron-sized particles, including nano-scale particles, the particles mechanically cooperating to promote smooth powder flow, which facilitates compaction of the cored wire electrode.