mdadm --detail /dev/md0
/dev/md0:
Version : 0.90
Creation Time : Sun Dec 19 18:32:25 2010
Raid Level : raid1
Array Size : 241264064 (230.09 GiB 247.05 GB)
Used Dev Size : 241264064 (230.09 GiB 247.05 GB)
Raid Devices : 2
Total Devices : 1
Preferred Minor : 0
Persistence : Superblock is persistent
Update Time : Sun Feb 3 14:21:23 2013
State : clean, degraded
Active Devices : 1
Working Devices : 1
Failed Devices : 0
Spare Devices : 0
UUID : 5ecd5946:1bd74e72:e1cbcd4c:602336b4
Events : 0.20821424
Number Major Mi