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Solaris : How to do a Raid 1 (mirror) on data disk?

Hello experts.

I have 4 disks on a Sun Fire V440 (solaris 11).
I have mirrored the root disk and I want to use the two other disks c2t2d0 & c2t3d0 as data disk.

I plan to mirror the data disk for a better data redundancy, but I don't know exactly how to partition them, and I am not sure how can I mirror data disk. Can you guide me  ?

bash-3.2# format               
Searching for disks...done


AVAILABLE DISK SELECTIONS:
       0. c2t0d0 <SUN72G cyl 14087 alt 2 hd 24 sec 424>
          /pci@1f,700000/scsi@2/sd@0,0
       1. c2t1d0 <SUN72G cyl 14087 alt 2 hd 24 sec 424>
          /pci@1f,700000/scsi@2/sd@1,0
       2. c2t2d0 <SUN72G cyl 14087 alt 2 hd 24 sec 424>
          /pci@1f,700000/scsi@2/sd@2,0
       3. c2t3d0 <SUN72G cyl 14087 alt 2 hd 24 sec 424>
          /pci@1f,700000/scsi@2/sd@3,0

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arnold
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