RAID5 conf printout:
 --- rd:4 wd:4 fd:0
 disk 0, o:1, dev:hda2
 disk 1, o:1, dev:hdc2
 disk 2, o:1, dev:hde2
 disk 3, o:1, dev:hdh2
md: syncing RAID array md1
md: minimum _guaranteed_ reconstruction speed: 1000 KB/sec/disc.
md: using maximum available idle IO bandwith (but not more than 200000 KB/sec) for reconstruction.
md: using 128k window, over a total of 292937152 blocks.