[linux-lvm] partitioning enterprise Linux 4 one or more partitions?

[Aubin, Jean-Francois]

Hi,

I have two server with 2 xeon cpu dual core, 8gb of memmory, 2 x 73gb in
raid hardware for mirror OS and a FC card Qlogic 4GB for connect many
Lun with a EMC san. It's for install Oracle Rac and redhat enterprise
Linux 4. My question is about partitioning Linux rhel4 os with a lvm
partition. Which is the best partitioning for my configuration? I have 3
choice: 
1-
RHEL 4 with ACL SELinux activated for more secure server, monitoring and
backuping this server. 
Swap partition with ext3
/boot with ext3 partition
/ Root in a LVM partition for the rest of system files

2-
RHEL 4 with no SELinux. 
/boot with ext3 partition
/ Root with ext3 partition
Swap partition in a LVM partition
/tmp in a LVM partition
/var in a LVM partition
/usr in a LVM partition
/home in a LVM partition
/opt in a LVM partition

3-
RHEL 4 with no SELinux. 
Swap partition with ext3 partition
/boot with ext3 partition
/ Root in a LVM partition
/home in a LVM partition

Thanks a lot in advance.