migration – Storcli – migrate from RAID1 to RAID10

I have a system with two hard drives configured in RAID1. I bought two more – same model / size, etc. – and now I want to reconfigure them in RAID10.

I have storcli installed in VMWare and works, but I can't find anything on the conversion to raid10, just raid5 / 6 …

I only found how to create raid10 from scratch:
storcli -CfgSpanAdd -r10 -Array0[64:0,64:1] -Array1[64:2,64:3] -a0

But nothing on how to migrate the existing array from two disks to four.

Of course, I would like to keep the existing data.

Ideas?