segment size

The amount of data, in kilobytes (KB), that a controller writes on a single disk drive in a logical drive before writing data on the next disk drive. Data is stored in blocks, which are 512 bytes of data (the smallest units of storage). The size of a segment determines how many data blocks that the segment contains. For example, an 8-KB segment holds 16 data blocks. A 64-KB segment holds 128 data blocks.