sentences:  Suppose we would like to distribute our data over formula_1 chunks.Our goal is to define two parity values formula_2 and formula_3, known as "syndromes", resulting in a system of formula_4 physical drives that is resilient to the loss of any two of them.In order to generate more than a single independent syndrome, we will need to perform our parity calculations on data chunks of size formula_5 A typical choice in practice is a chunk size formula_6, i.e.