2010-09-13 01:19 AM
Please could someone explain how the two controllers within the same chassis (3140) would be connected togther to provide a HA pair? - I have read in the "haconfig guide" that most systems with two controllers in the same chassis are connected via an internal interconnect, except the 31xx....
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2010-09-13 01:39 AM
FAS3140 controllers are connected via the backplane, indeed.
You are probably referring to back-end disk shelf cabling, called multipath HA (MP-HA), which provides increased resiliency when attaching DS14 shelves (e.g. a cable failure doesn't trigger unnecessary controller failover).
See attached picture (ignore interconnect cables, as they are replaced by backplane in 31x0)
2010-09-13 02:18 AM
Defiantly the HA connection – Page 25 of the DOT8.0 7-Mode High Availability Configuration Guide – See below:
Note: In the case of systems with two controller modules in a single chassis (except the 31xx
systems), both nodes of the HA pair are located in the same chassis and have an internal
2010-09-13 03:02 AM
Old 30x0 & 60x0 - but none of them has two controllers in a single chassis.
Have a look at this:
and then page 2 & the difference between 60x0 & 31x0 diagrams.