# mdadm -D /dev/md0
/dev/md0:
Version : 1.2
Creation Time : Wed Jan 14 14:26:11 2015
Raid Level : raid0
Array Size : 878414724 (837.72 GiB 899.50 GB)
Raid Devices : 3
Total Devices : 3
Persistence : Superblock is persistent

Update Time : Wed Jan 14 14:26:11 2015
State : clean
Active Devices : 3
Working Devices : 3
Failed Devices : 0
Spare Devices : 0

Chunk Size : 12K

Name : xxx_xx_xxx_xxx:0
UUID : xxxxxxxx:xxxxxxxx:xxxxxxxx:xxxxxxxx
Events : 0

Number Major Minor RaidDevice State
0 104 16 0 active sync /dev/cciss/c0d1
1 104 32 1 active sync /dev/cciss/c0d2
2 104 48 2 active sync /dev/cciss/c0d3

# df -h
Filesystem Size Used Avail Use% Mounted on
/dev/cciss/c0d0p2 35G 15G 19G 44% /
tmpfs 5.9G 4.0K 5.9G 1% /dev/shm
/dev/cciss/c0d0p1 194M 80M 105M 44% /boot
/dev/md0 838G 2.8G 835G 1% /data/logs
# umount /dev/md0
# mdadm –stop /dev/md0

# fdisk /dev/cciss/c0d1
# fdisk /dev/cciss/c0d1
# fdisk /dev/cciss/c0d3

# mdadm -C /dev/md0 -n3 -l0 -c12 /dev/cciss/c0d[1,2,3]
# cat /etc/mdadm.conf
ARRAY /dev/md0 metadata=1.2 name=xxx_xx_xxx_xxx:0 UUID=xxxxxxxx:xxxxxxxx:xxxxxxxx:xxxxxxxx auto=yes
# mdadm -Ds > /etc/mdadm.conf
# mkfs.xfs -f /dev/md0