Dell EqualLogic Configuration Guide v11.3
30
Figure 10 Using a LAG to Interconnect Switch Stacks
4.3.2
Sizing Inter-Switch Connections
Use the guidelines in Table 16 as a starting point for estimating Inter-switch connection sizes.
Connection Speeds
Interconnection Guidelines
1GbE
switches attached to
1GbE
array controllers
1-5 arrays:
1Gb of IST bandwidth per active array
controller port (up to the aggregated maximum
bandwidth of the IST.
6+ arrays:
Use 1-5 array rule, then add 1Gb of additional
bandwidth for each array added
10GbE
switches attached to
10GbE
array controllers
1-5 arrays
: 20 – 30Gb of IST bandwidth between each
switch
6+ arrays:
At least 6Gb of IST bandwidth per array
between each switch
1GbE
switches connecting to
10GbE
switches in a mixed speed SAN
Actual requirements will vary. For more details see Section
4.6,
Integrating 1GbE and 10GbE SANs
Table 16: Switch Interconnect Design Guidelines
Note:
A multi-stack SAN infrastructure as described in this section may provide added
reliability to the SAN environment. But, it may also introduce additional latency and the
potential for lower throughput. The SAN designer will have to carefully consider the
performance and reliability implications.
Summary of Contents for EqualLogic PS4000
Page 1: ...Dell EqualLogic Configuration Guide Dell EqualLogic Storage Infrastructure and Solutions ...
Page 11: ...Dell EqualLogic Configuration Guide v11 3 6 Figure 1 Partially Connected Controller Failover ...
Page 44: ...Dell EqualLogic Configuration Guide v11 3 39 Figure 14 Mixed Speed Redundant SAN ...
