* HP Proliant is a good choice
Now , I assume it's a server with 8 discs.
Best practice ,
* first 2-disk
"Raid1" structure will suffice as you would think for the system ( of course we will monitor the warning LEDs and ILOM
)
* for the other 6 disks , the most suitable raid config is
"Raid 5" ( if your database was production enviroment then maybe 1 disk spare can be considered but not needed for develop )
* and your hp tools ( smart storage admin / smart array ) forwards to you for creating raid pools and and advices for some details ( stripe size , raid conf and some defaults... )
good luck
regards
ygemici