Dell PS4100 Technical Information download pdf (Page 90)

June 2012 Dell EqualLogic Configuration Guide v13.2 84

Figure 31 Connection Paths for FS7500 Client LAN

Figure 32 below shows the iSCSI SAN, IPMI and node interconnect paths. Pay careful attention to how

the controller ports alternate between redundant switch paths.

Note: With the exception of the IPMI connection paths,

corresponding ports on each controller

node must connect to the same SAN switch

. This connection pattern is shown in Figure 32.

Sizing the iSCSI SAN Inter-Switch Connection for FS7500

The inter-switch connection sizing guidelines provided in Section 4.3.2 also apply to FS7500 SAN

design. The FS7500 mirrors the write cache between controller nodes. To accomplish this, all write

operations are transmitted across the controller interconnect. Thus, it is very important that you follow

connection pattern shown in Figure 32 to ensure corresponding ports are connected to the same

switch. This connection pattern prevents controller interconnect traffic from crossing the inter-switch

connection.

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Dell PS4100 Technical Information Page 90