Something

# metastat
d70: Mirror
    Submirror 0: d71
      State: Okay         
    Submirror 1: d72
      State: Okay         
    Pass: 1
    Read option: roundrobin (default)
    Write option: parallel (default)
    Size: 84613440 blocks (40 GB)

d71: Submirror of d70
    State: Okay         
    Size: 84613440 blocks (40 GB)
    Stripe 0:
        Device     Start Block  Dbase        State Reloc Hot Spare
        c1t0d0s7          0     No            Okay   Yes 


d72: Submirror of d70
    State: Okay         
    Size: 84613440 blocks (40 GB)
    Stripe 0:
        Device     Start Block  Dbase        State Reloc Hot Spare
        c1t1d0s7          0     No            Okay   Yes 


d50: Mirror
    Submirror 0: d51
      State: Okay         
    Submirror 1: d52
      State: Okay         
    Pass: 1
    Read option: roundrobin (default)
    Write option: parallel (default)
    Size: 33560448 blocks (16 GB)

d51: Submirror of d50
    State: Okay         
    Size: 33560448 blocks (16 GB)
    Stripe 0:
        Device     Start Block  Dbase        State Reloc Hot Spare
        c1t0d0s5          0     No            Okay   Yes 


d52: Submirror of d50
    State: Okay         
    Size: 33560448 blocks (16 GB)
    Stripe 0:
        Device     Start Block  Dbase        State Reloc Hot Spare
        c1t1d0s5          0     No            Okay   Yes 


d0: Mirror
    Submirror 0: d1
      State: Okay         
    Submirror 1: d2
      State: Okay         
    Pass: 1
    Read option: roundrobin (default)
    Write option: parallel (default)
    Size: 16780224 blocks (8.0 GB)

d1: Submirror of d0
    State: Okay         
    Size: 16780224 blocks (8.0 GB)
    Stripe 0:
        Device     Start Block  Dbase        State Reloc Hot Spare
        c1t0d0s0          0     No            Okay   Yes 


d2: Submirror of d0
    State: Okay         
    Size: 16780224 blocks (8.0 GB)
    Stripe 0:
        Device     Start Block  Dbase        State Reloc Hot Spare
        c1t1d0s0          0     No            Okay   Yes 


d10: Mirror
    Submirror 0: d11
      State: Okay         
    Submirror 1: d12
      State: Okay         
    Pass: 1
    Read option: roundrobin (default)
    Write option: parallel (default)
    Size: 8293440 blocks (4.0 GB)

d11: Submirror of d10
    State: Okay         
    Size: 8293440 blocks (4.0 GB)
    Stripe 0:
        Device     Start Block  Dbase        State Reloc Hot Spare
        c1t0d0s1          0     No            Okay   Yes 


d12: Submirror of d10
    State: Okay         
    Size: 8293440 blocks (4.0 GB)
    Stripe 0:
        Device     Start Block  Dbase        State Reloc Hot Spare
        c1t1d0s1          0     No            Okay   Yes 


Device Relocation Information:
Device   Reloc  Device ID
c1t1d0   Yes    id1,sd@SSEAGATE_ST373207LSUN72G_0433Y7NE____________3KT3Y7NE
c1t0d0   Yes    id1,sd@SSEAGATE_ST373207LSUN72G_0533W8EE____________3KT3W8EE