$FreeBSD$
ccd3: 4 components (md90, md91, md92, md93), 1216 blocks concatenated
50ca80e7defff2928b09d9e6c22d14ff
a5f4fb6b17d948b83b8685b3adfe0926
a294e6900769b0a1cd744d01d5a5508d
14fe8b94bacd1cf53ea587bbac2b74e4
0 16 496
		496 16 240
				736 16 240
						976 16 240