Mirroring SAN Solution

Hello all, I am trying to find out what hardware to use for a proposed SAN solution.

My client would like 1 SAN to store data on and a 2nd SAN to mirror that data and a 3rd SATA array that will archive this info. they would like the mirror to be a hardware solution so if there is any failure the data can be put into new hardware.

I tried doing this with HP hardware but I was told it is impossible. We are looking for some kind of duplexing of the fibrechannel cards.

Please help