StorNext File System Tuning

The Distributed LAN (Disk Proxy) Networks

22 StorNext File System Tuning Guide

Network Configuration and Topology

For maximum throughput, SNFS distributed LAN can utilize multiple

NICs on both clients and servers. In order to take advantage of this

feature, each of the NICs on a given host must be on a different IP

subnetwork. (This is a requirement of TCP/IP routing, not of SNFS - TCP/

IP can't utilize multiple NICs on the same subnetwork.) An example of

this is shown in the following illustration.

Figure 1 Multi-NIC Hardware

and IP Configuration Diagram

In the diagram there are two subnetworks: the blue subnetwork

(10.0.0.x) and the red subnetwork (192.168.9.x). Servers such as S1 are

connected to both the blue and red subnetworks, and can each provide

up to

2 GByte/s of throughput to clients. (The three servers shown would thus

provide an aggregate of 6 GByte/s.)

Clients such as C1 are also connected to both the blue and red

subnetworks, and can each get up to 2 GByte/s of throughput. Clients

such as C2 are connected only to the blue subnetwork, and thus get a

Distributed
LAN
Client
C1
10.0.0.45
192.168.9.45
Distributed
LAN
Client
C1
10.0.0.44
192.168.9.44
Distributed
LAN
Server
S1
10.0.0.35
192.168.9.35
Distributed
LAN
Server
S1
10.0.0.34
192.168.9.34
Distributed
LAN
Client
C2
10.0.0.57
Distributed
LAN
Client
C2
10.0.0.56
Switch
A
10.0.0.x
Switch
B
192.168.9.x
Distributed
LAN
Server
S1
10.0.0.33
192.168.9.33
Distributed
LAN
Client
C1
10.0.0.43
192.168.9.43
Distributed
LAN
Client
C2
10.0.0.55
SAN