Questions about 3Ware 7506 controller

[Alvin Gunkel]

I'm running 4.7 Release on a colocated system without access to
bios/console.  This system currently has a Highpoint RocketRaid 100
controller driving four WD 60gb (WD600JB, 8mb cache) drives in a raid 0+1
config.  I had a drive fail and the controller kept the system up and
functioning, but something has prevented rebuild from occurring, even in
the bios util after replacing the failed drive.  As this is a most
inconvienent situation I'm considering replacing the raid controller with
a 3Ware 7506-4LP controller so I have more control from the OS level.

My two questions are:

-What driver/firmware should I use?  I have a 3Ware 6410 running in
another 4.7 system and am able to use the 3DM utils out of ports to
monitor it.  I don't know if those utils support the 7506.  3Ware has a
beta driver and command line utils for the 7506 and FreeBSD 4.8.  Which
way to go?

-Raid 10 or 5?  Compared to the 0+1 I have now, 10 would be a nice
improvement as loss of the one drive effectively took out two of my
drives.  Raid 5 would give me an extra 60gb to use, but I don't have any
idea what the performance differential would be.

Any thoughts or comments would be appreciated.

Thanks,

Alvin