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Recommended mount options for high performance data transfer e.g. databases, mediation devices, file servers.

  • NFS mount options for ORACLE
  • NFS mount options for PostgreSQL
  • NFS mount options for Mediation Devices, HP IUM, Oracle Golden Gate
OS Options
Solaris rw,bg,hard,nointr,rsize=1048576,wsize=1048576,proto=tcp,noac,forcedirectio,vers=3,suid
HP-UX rw,bg,vers=3,proto=tcp,noac,forcedirectio,hard,nointr,timeo=600,rsize=1048576,wsize=1048576,suid
Linux rw,bg,hard,nointr,rsize=1048576,wsize=1048576,tcp,actimeo=0,vers=3,timeo=600
AIX cio,rw,bg,hard,nointr,rsize=1048576,wsize=1048576,proto=tcp,noac,vers=3,timeo=600

OS Settings


Increase rpc slot count up to 64 or 128. For Rhel5 add this option to /etc/modprobe.conf

# cat /etc/modprobe.d/sunrpc.conf
options sunrpc tcp_slot_table_entries=64

Tune network stack

net.core.rmem_max = 16777216
net.core.wmem_max = 16777216
net.ipv4.tcp_rmem = 32768 262144 16777216
net.ipv4.tcp_wmem = 32768 262144 16777216
net.ipv4.tcp_window_scaling = 1
net.ipv4.tcp_sack = 1
net.ipv4.tcp_timestamps = 0

Increase HW buffer sizes, ex:

options be2net rx_frag_size=8192

Linux nfsv3 datapath

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