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.
The spacing of slot centers is 0.394 in (10.01 mm) and the slot depth is 0.118 in (3.00 mm). The only significant difference between the Picatinny rail and the similar Weaver rail are the size and shapes of the slots, where the Picatinny rail has square-bottomed slots while Weaver rails have rounded slots.