$ saconfig /dev/ciss4 

******************** SmartArray RAID Controller /dev/ciss4 ********************

---------- PHYSICAL DRIVES ----------

Location       Ch   ID   Size           Status

External       1    0    72.8 GB        OK
External       1    1    72.8 GB        OK
External       1    2    72.8 GB        OK
External       1    3    72.8 GB        OK
External       1    4    72.8 GB        OK
External       1    5    72.8 GB        OK
External       1    8    72.8 GB        SPARE
External       2    0    72.8 GB        OK
External       2    1    72.8 GB        OK
External       2    2    72.8 GB        OK
External       2    3    72.8 GB        OK
External       2    4    72.8 GB        OK
External       2    5    72.8 GB        OK
External       2    8    72.8 GB        SPARE

---------- LOGICAL DRIVE 0 ----------

RAID Level      = 1+0
Size            = 277835 MB
Stripe Size     = 128 KB
Status          = OK

Participating Physical Drive(s):

Ch   ID   

1    0    
1    1    
1    2    
1    3    
2    0    
2    1    
2    2    
2    3    

Participating Spare Drive(s):

Ch   ID   

1    8    
2    8    

---------- LOGICAL DRIVE 1 ----------

RAID Level      = 1+0
Size            = 138920 MB
Stripe Size     = 128 KB
Status          = OK

Participating Physical Drive(s):

Ch   ID   

1    4    
1    5    
2    4    
2    5    

Participating Spare Drive(s):

None