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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