Technical information

40 EqualLogic Configuration Guide | Version 15.2 | August 2014
Figure 5 Using a LAG to interconnect switch stacks
8.2.2 Sizing inter-switch connections
Use the guidelines in Table 15 as a starting point for estimating inter-switch connection sizes.
Table 15 Switch Interconnect Design Guidelines
Connection speeds
Interconnection guidelines
1GbE switches attached to
1GbE array controllers
1-5 arrays: 1Gb of inter-switch bandwidth per active
array controller port (up to the aggregated maximum
bandwidth of the inter switch links.
6+ arrays: Use 1-5 array rule, then add 1Gb of
additional bandwidth for each array added
10GbE switches attached to
10GbE array controllers
PS6010/PS6510 or PS4110/6110 (Random Small
Block Workloads):
1-5 arrays: 20 – 30Gb of inter-switch bandwidth
between each switch
6+ arrays: At least 6Gb of inter-switch bandwidth per
array between each switch
PS4110/PS6110 (Large Block Sequential Workloads):
1-5 arrays: 10Gb of bandwidth per active array
controller port (up to the aggregated maximum
bandwidth of the IST).
6+ arrays: Use 1-5 array rule, then add 10Gb of
additional bandwidth for each array added
8.2.3 Comparing inter-switch connection types
Table 16 provides details and recommendations for selecting interconnect options.