migrating to new drive

I am having a alienware m18x r2 with 256x2 SSD configured with raid 0. i am planning to upgrade the hard driver capacity to 512x2 or 1tb x 2 i was wondering how i restore all the OS and other data to my new hdd can anyone help me with the steps in details on how to do this. also please include...

Ok, I'm thinking about migrating my desktop and laptop to the SSD drive and I have a few questions. 1) After doing some research I've noticed that most SSD drives are SATA III. Will there be a significant performance loss or data bottleneck if I attach this to a SATA II system? 2) I've also...