Dell EqualLogic PS6210XV PS6210 Installation and Setup Guide - Page 18

Minimum and Recommended Cable Configurations, Recommended Network Configurations

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PS6210 Install and Setup Guide 3 Connecting the Array Cables Recommendation For replication, a reliable, adequately sized network link Use of spanning-tree protocol VLANs DCB Description For effective and predictable replication, the network link between the primary and secondary groups must be reliable and provide sufficient bandwidth for copying data. If possible, do not use Spanning Tree Protocol (STP) on switch ports that connect end nodes (iSCSI initiators or array network interfaces). If you must use STP or RSTP (STP is preferable), enable the port settings (available on some switches) that let the port immediately transition into STP forwarding state upon link up. This functionality can reduce network interruptions that occur when devices restart, and should be enabled only on switch ports that connect end nodes. You can use STP for a single-cable connection between switches and trunking for multicable connections between switches. To use DCB (Data Center Bridging), configure switches to use VLANs to separate iSCSI SAN traffic from other network traffic. You must have VLANs enabled. Refer to the Dell EqualLogic Group Manager Administrator's Manual, and the Dell EqualLogic Group Manager CLI Reference Guide for more information about DCB. Minimum and Recommended Cable Configurations For a dual control module array, the recommended configuration is to connect network cables to Ethernet 0 on both control modules, and connect each control module to a network switch. For high performance and availability, distribute the connections across multiple network switches. The switches must be connected with interswitch links that have sufficient bandwidth to handle the iSCSI traffic, or by stacking capability. Dell recommends using stacking configurations wherever possible. Figure 5 illustrates the recommended network configuration alternatives. Note: Dell does not recommend connecting both the SFP+ and 10GBASE-T Ethernet ports at the same time. Figure 5: Recommended Network Configurations 10

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PS6210 Install and Setup Guide
3 Connecting the Array Cables
Recommendation
Description
For replication, a
reliable, adequately
sized network link
For effective and predictable replication, the network link between the primary and
secondary groups must be reliable and provide sufficient bandwidth for copying data.
Use of spanning-tree
protocol
If possible, do not use Spanning Tree Protocol (STP) on switch ports that connect end nodes
(iSCSI initiators or array network interfaces).
If you must use STP or RSTP (STP is preferable), enable the port settings (available on some
switches) that let the port immediately transition into STP forwarding state upon link up.
This functionality can reduce network interruptions that occur when devices restart, and
should be enabled only on switch ports that connect end nodes.
You can use STP for a single-cable connection between switches and trunking for
multicable connections between switches.
VLANs
To use DCB (Data Center Bridging), configure switches to use VLANs to separate iSCSI
SAN traffic from other network traffic.
DCB
You must have VLANs enabled. Refer to the
Dell EqualLogic Group Manager
Administrator's Manual
, and the
Dell EqualLogic Group Manager CLI Reference Guide
for
more information about DCB.
Minimum and Recommended Cable Configurations
For a dual control module array, the recommended configuration is to connect network cables to Ethernet 0 on
both control modules, and connect each control module to a network switch.
For high performance and availability, distribute the connections across multiple network switches.
The switches must be connected with interswitch links that have sufficient bandwidth to handle the iSCSI traffic,
or by stacking capability. Dell recommends using stacking configurations wherever possible.
Figure 5
illustrates the recommended network configuration alternatives.
Note:
Dell does not recommend connecting both the SFP+ and 10GBASE-T Ethernet ports at the same time.
Figure 5: Recommended Network Configurations
10