Dell EqualLogic PS6100 series Configuration Manual page 111

Table 44 M-Series I/O module Stack(s) to Non-Stacked external switch infrastructure
M-Series I/O module Stack(s) to Non-Stacked external switch infrastructure
•
Each M-Series I/O module stack can be updated independently
without bringing SAN down.
•
SAN Array-to-array traffic is isolated outside of the M1000e
enclosures
•
Fixed hops between hosts and array volumes regardless of
number of M1000e enclosures
•
Supports ability to scale arrays
•
Supports ability to scale host.
•
Supports sharing SAN with non-M1000e servers.
•
Fewer "switches" to manage since each stack is managed as a
single switch
•
If available, use 10Gb links between M-series I/O modules and external switches
•
M-series I/O module stacks do not need to be interconnected since no arrays are attached
directly to M-series I/O modules.
•
Additional M1000e enclosures are added in similar fashion to diagram above. Enclosure
scalability is greater if 10Gb links are used between M-series I/O module stacks and the external
stack
•
This strategy works for a single fabric or dual fabric M-Series I/O module configuration (See
Section 9.1 for details)
March 2013
Advantages
Other Notes
Dell EqualLogic Configuration Guide v14.1
Concerns
•
Firmware updates on
external stack requires
scheduled downtime
•
Limited scalability of
LAG bandwidth.
•
Spanning Tree may
block some links if a
loop is created.
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