Create and add a new ASM disk to the DATA diskgroup

Hello all,

I have a two nodes Oracle 11gR2 RAC system in production and I need to create and add a new ASM disk to the DATA diskgroup, as DATA_FG1_SRV_3 and DATA_FG2_SRV_3.

The question that I have is about which physical disk I have to take, based on the oracleasm listdisks and the fdisk output.

Here a general overview of the system:

# uname -rp

2.6.32-504.el6.x86_64 x86_64

# rpm -qa | grep oracleasm

kmod-oracleasm-2.0.8-4.el6_6.x86_64

oracleasm-support-2.1.8-1.el6.x86_64

oracleasmlib-2.0.4-1.el6.x86_64

$ oracleasm listdisks

DATA_FG1_SRV_0

DATA_FG1_SRV_1

DATA_FG1_SRV_2

DATA_FG2_SRV_0