Doing this in a unit with 2 PSUs will give you PSU redundancy, should
one fail. It will also give you breaker/fuse redundancy, should one
pop. However it won't give you power source redundancy. You still need
a B feed connected to a PSU to get redundancy for the power source.
http://www.cisco.com/en/US/docs/switches/metro/me3400/hardware/installation/guide/HGDCPWR.html
In my experience you're more likely to lose a power source than a PSU.
When it doubt wire the device as indicated with A & B to both PSUs.
Though I would never wire a device this way, figure C-7 give you an
option for daisy-chaining 2 power feeds through both PSUs.
Justin
Dan Armstrong wrote:
The power supplies on the ME3400s have 2 inputs, for "breaker"
redundancy.. some models have to physical power supplies, some have only
one - in all cases, each supply has 2 inputs. If your model has 2 power
supplies, you can hookup just the A side of each unit, and you'll be fine.
Dave Weis wrote:
Do I need to supply both power supplies with an A&B side for
redundancy or will I have redundancy if I have the A side of PS1 and
PS2 connected?
Thanks
dave
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