[Samba] How to setup mirroring

[Saravanan]

Dear All,

Can you pls help me how to setup up mirroring.

I have Adaptech 39320 SCSI CARD and 2 nos of IBM HITACHI 143 GB HDD, Iam 
using REDHAT ENTERPRISE LINUX 4 AS, now the things is
i want to setup mirroring, what ever  i have on disk1 should 
automatically done disk2, including all file system and other things.

If any problem with disk1 just by changing the disk2 to disk1 or 
changing the boot sequence i have to do from disk2.

It is very urgent pls help me.

Thanks & regards,

Saravanan