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PS5000 Hardware Maintenance

Table 3-3: Network Recommendations (Continued)

Recommendation Description

Unicast storm

control disabled on

switches

Jumbo Frames

enabled on switches

and NICs

VLANs

Connecting Network Cables

A PS5000 array must have at least one and can have up to three active network

connections at one time. Multiple network connections are recommended for

performance and availability.

Connect cables to network interfaces as follows:

•

For copper-based networks, use Category 5E or Category 6 cables with RJ45

connectors. Use Category 5 cables if they meet the TIA/EIA TSB95 standard.

•

Connect interfaces in this order: Ethernet 0, Ethernet 1, and Ethernet 2.

•

Connect interfaces to different network switches.

•

In a dual control module array, to ensure connectivity if a control module

fails, connect a cable to the interface port on each control module. For

example, connect a cable to Ethernet 0 on CM0 and Ethernet 0 on CM1.

For a single control module array, the minimum network configuration is one

network connection to Ethernet 0. However, the single network connection is a

potential point of failure and limits bandwidth. Therefore, it is recommended that

you connect multiple network interfaces to different network switches.

For example, if you connect cables as shown in Figure 3-2, and Ethernet 0 fails,

initiators can be redirected to another functioning interface. This configuration

provides the maximum network bandwidth.

3–6

Disable unicast storm control on each switch that handles iSCSI

traffic, if the switch provides this feature. However, the use of

broadcast and multicast storm control is encouraged on switches.

Enable Jumbo Frames on each switch and NIC that handles iSCSI

traffic to obtain any performance benefit and ensure consistent

behavior.

Configure switches to use VLANs in order to separate iSCSI SAN

traffic from other network traffic.

Maintaining Control Modules