From Sigmon
RAID
data integrity check
md: data-check of RAID array md0
md: minimum _guaranteed_ speed: 1000 KB/sec/disk.
md: using maximum available idle IO bandwidth (but not more than 200000 KB/sec) for data-check.
md: using 128k window, over a total of 976762496 blocks.
Personalities : [raid6] [raid5] [raid4]
md0 : active raid5 sdb[0] sdf[4] sde[3] sdd[2] sdc[1]
3907049984 blocks level 5, 64k chunk, algorithm 2 [5/5] [UUUUU]
[============>........] check = 61.1% (597390100/976762496) finish=66.0min speed=95659K/sec