daunderground@ubuntu:~$ sudo mdadm --examine /dev/sd*
/dev/sda:
MBR Magic : aa55
Partition[0] : 497664 sectors at 2048 (type 83)
Partition[1] : 249567234 sectors at 501758 (type 05)
mdadm: No md superblock detected on /dev/sda1.
/dev/sda2:
MBR Magic : aa55
Partition[0] : 249567232 sectors at 2 (type 83)
mdadm: No md superblock detected on /dev/sda5.
/dev/sdb:
Magic : a92b4efc
Version : 1.2
Feature Map : 0x0
Array UUID : b3f3cede:76fa6c93:e503526e:aeb27721
Name : ubuntu:0
Creation Time : Thu Jan 31 12:48:57 2013
Raid Level : raid5
Raid Devices : 3
Avail Dev Size : 3906767024 (1862.89 GiB 2000.26 GB)
Array Size : 3906763776 (3725.78 GiB 4000.53 GB)
Used Dev Size : 3906763776 (1862.89 GiB 2000.26 GB)
Data Offset : 262144 sectors
Super Offset : 8 sectors
State : clean
Device UUID : 3436fd25:dc709fd6:9aedccb2:5c7c09f4
Update Time : Thu Feb 18 23:40:02 2016
Checksum : 66a137c0 - correct
Events : 1757
Layout : left-symmetric
Chunk Size : 512K
Device Role : Active device 0
Array State : A.. ('A' == active, '.' == missing)
/dev/sdc:
MBR Magic : aa55
Partition[0] : 3907027120 sectors at 2048 (type 83)
/dev/sdc1:
Magic : a92b4efc
Version : 1.2
Feature Map : 0x0
Array UUID : b3f3cede:76fa6c93:e503526e:aeb27721
Name : ubuntu:0
Creation Time : Thu Jan 31 12:48:57 2013
Raid Level : raid5
Raid Devices : 3
Avail Dev Size : 3906764976 (1862.89 GiB 2000.26 GB)
Array Size : 3906763776 (3725.78 GiB 4000.53 GB)
Used Dev Size : 3906763776 (1862.89 GiB 2000.26 GB)
Data Offset : 262144 sectors
Super Offset : 8 sectors
State : active
Device UUID : f497d019:d8a6f3ff:d982709b:69f78a64
Update Time : Thu Feb 18 02:36:15 2016
Checksum : dcf3b9c5 - correct
Events : 1579
Layout : left-symmetric
Chunk Size : 512K
Device Role : Active device 1
Array State : AAA ('A' == active, '.' == missing)
/dev/sdd:
MBR Magic : aa55
Partition[0] : 3907027120 sectors at 2048 (type 83)
/dev/sdd1:
Magic : a92b4efc
Version : 1.2
Feature Map : 0x0
Array UUID : b3f3cede:76fa6c93:e503526e:aeb27721
Name : ubuntu:0
Creation Time : Thu Jan 31 12:48:57 2013
Raid Level : raid5
Raid Devices : 3
Avail Dev Size : 3906764976 (1862.89 GiB 2000.26 GB)
Array Size : 3906763776 (3725.78 GiB 4000.53 GB)
Used Dev Size : 3906763776 (1862.89 GiB 2000.26 GB)
Data Offset : 262144 sectors
Super Offset : 8 sectors
State : active
Device UUID : 3c9e4456:3373a861:7a8de82f:cbe8b55f
Update Time : Thu Feb 18 02:36:15 2016
Checksum : abf7d85 - correct
Events : 1579
Layout : left-symmetric
Chunk Size : 512K
Device Role : Active device 2
Array State : AAA ('A' == active, '.' == missing)
/dev/sde:
MBR Magic : aa55
Partition[0] : 4294967295 sectors at 1 (type ee)
mdadm: No md superblock detected on /dev/sde1.