[c-nsp] Cisco RPS

[Ian MacKinnon]

Seth Mattinen wrote:
> Ian MacKinnon wrote:
>> Hi All,
>>
>> I have a Cisco RPS 600W, which according the manual will connect to 3550
>> switches.
>> Can it also work for 3560?
>> The 3560 installation guide says use the 675W model
>> The 3560 I have are not PEO models and only 24 port
>>
> 
> The two units are completely different; the 675 is a small 1U single AC 
> device that can only provide power to one of its six outputs at a time. 
> The RPS connectors are also physically incompatible.
> 
> http://www.cisco.com/en/US/products/hw/switches/ps628/products_data_sheet09186a0080150e31.html
> 
> It also has a nasty "feature" of not letting the connected device fall 
> back to its internal power supply, so you can't use it to provide dual 
> AC inputs and run a device from RPS-only like you can with the 600. 
> (Although someone said if you pull the plug on it rather than press the 
> button on the front that it will, but I haven't tried that with mine.) 
> It's purely a standby power source.
> 
Is it just me, or are the redundant power options totally confusing?
This is for a data centre, every rack has 2 AC feeds, from separate
sources/ups etc.
All I need is for everything to stay working if I lose one supply.
How much is a 675? I need to support a number of switches, the 600 would
support 4 devices at the same time.

Any other suggestions?


thanks

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