Abstract: The present embodiments relate to a PMR write head with a trailing shield that comprises a FeCoNiM composition. The FeCoNiM composition can be formed via an electroplating process by adding Fe2+, Co2+, Ni2+ and a transition metal salt to an aqueous solution comprised of other additives in an electroplating cell that has an Ni or Co as the anode. The plated HD magnetic material as the trailing shield in a PMR writer can minimize a wide area track erasure (WATE). Further, a high moment high damping shield can lower bit error rate (BER) and increase aerial density capability (ADC) of the write head.

Abstract: The method delivers a storage system for Big Data usage. The system contains a matrix of unreliable physical data devices and data in this reliable big capacity storage system is protected by the triple protection so the method and system can protect storage system from more than 2 fault data devices. In some cases, the system can still deliver data when system has many failed data devices at the same. Floating Parity technology can also avoid heavily writing data to some device surfaces, due to parity update, which cause data device to be failed before expected device life time.

Abstract: The method delivers a storage system for Big Data usage. The system contains a matrix of unreliable physical data devices and data in this reliable big capacity storage system is protected by the triple protection so the method and system can protect storage system from more than 2 fault data devices. In some cases, the system can still deliver data when system has many failed data devices at the same. Floating Parity technology can also avoid heavily writing data to some device surfaces, due to parity update, which cause data device to be failed before expected device life time.