nfs

firewall stop

sudo /etc/init.d/iptables stop

check hosts

cat /etc/hosts.allow
cat /etc/hosts.deny

sudo vim /etc/exports #open /mnt/sdb

/mnt/sdb/ 192.168.0.*(rw) #into network
/mnt/sdb/ localhost(rw) # me

nfs install and execute

sudo yum install nfs-utils
sudo /etc/init.d/nfs start

try mount

sudo mount -t nfs localhost:/mnt/sdb /mnd/disk

refer to

http://linuxos.blog102.fc2.com/blog-entry-40.html
http://www.stackasterisk.jp/tech/systemConstruction/nfs01_01.jsp