3. Parity : As explained above, mirroring involves high cost, so to protect the data new technique is used with striping called parity. This is reliable and low cost solution for data protection. In this method and additional HDD or disk is added to the stripe width to hold parity bit.
For mounting bracket used on some firearms, see Picatinny rail. The Picatinny Arsenal (/ËpÉªkÉtÉªni/ or /ËpÉªkÉËtÉªni/) is an American military research and manufacturing facility located on 6,400 acres (26 km2) of land in Jefferson Township and Rockaway Township in Morris County, New Jersey, United States, encompassing Picatinny Lake and Lake Denmark.
These were the M16A2 and the M4 modified with new upper receivers where rails replaced hand guards. The rail is named after the Picatinny Arsenal in New Jersey, USA. The Picatinny Arsenal's role with the rail was to test/evaluate it and to create a military standard for it. This was Mil-STD-1913, dated February 3, 1995.