State Databases and RAID0 Question
 

I have an existing Solaris 10 system with a single 500GB SATA drive. Right now there is a 450GB slice that is mounted to /export. The owner of the system has purchased two additional internal 1TB SATA drives and would like them set up in a RAID 0 stripe so that he has a total of 2TB in a single volume and then used for /export.

My first question is about state databases. I have read that there should be a minimum of 3 state databases, but I'm not sure where I should locate them. Two on each new drive for a total of four? One on each new drive and one on the old drive (even though it's not a part of the stripe)? or something else?

My second question is about moving the current /export (while keeping data) to something else (maybe /export-old) and then having the new stripe (let's say /dev/md/rdsk/d0) become the new /export. How would I do that correctly in /etc/vfstab? The line for /export currently looks like this, and there isn't an entry for d0 yet:

Tron

Why aren't you considering ZFS ?