図5 RAIDアレイの情報 # cat /proc/mdstat Personalities : [raid6] [raid5] [raid4] md0 : active raid6 sda1[0] sdd1[3] sdc1[2] sdb1[1] 3907020800 blocks super 1.2 level 6, 512k chunk, algorithm 2 [4/4] [UUUU] unused devices: # mdadm --detail /dev/md0 /dev/md0: Version : 1.2 Creation Time : Thu Sep 20 12:45:16 2012 Raid Level : raid6 Array Size : 3907020800 (3726.03 GiB 4000.79 GB) Used Dev Size : 1953510400