Equallogic Iscsi San Design; Redundant San Configuration - Dell PS4000 Configuration Manual

4.5 EqualLogic iSCSI SAN Design

This section will combine all of the SAN components and information provided so far and bring them
together to configure a redundant EqualLogic PS Series SAN configuration. We also include a series of
examples illustrating partially redundant and non-redundant SAN configurations.
The information provided here will not be able to address all of the possible variations in a customer
network environment. All information is presented using a set of basic reference designs that make
the following assumptions:

The SAN network is physically isolated from all other network traffic

All best practices recommendations will be used to derive all examples

Unless otherwise stated, all reference designs will promote end-to-end host to volume
redundant paths

A minimal number of switches will be illustrated that allows the design concept to be
understood. Actual implementations will vary depending on customer's actual network
infrastructure.

If sharing physical switches with other, non-SAN traffic, assume all switches can represent
a VLAN rather than physical switches.
4.5.1

Redundant SAN Configuration

A redundant iSCSI SAN that utilizes an EqualLogic array is illustrated in Figure 13. In this SAN design,
each component of the SAN infrastructure has a redundant connection or path.
Note: For a production environment, this configuration shown in Figure 13 will protect your access to
data and is the ONLY type of configuration recommended by Dell.
Figure 13 Redundant SAN
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