Open-E v6 from 32-bit to 64-bit

I had 10TB data. I cannot recreate it. I want to convert 32-bit os to 64-bit os?
please help

There is not a conversion from 32bit to 64bit.
You will need to back up your data, and recreate the Volume group in 64bit mode.

You will have to go back to 32bit mode and copy your data somewhere as you cannot change from 32bit to 64bit and have the volumes there.