RE: HA without fallback-CBUS

["Phil Harris" <phil@xxxxxxxxxxx>]

Surely the answer to this is that pretty much any system can be installed
with a failure backup/redundancy of whatever level the customer wants *AND
IS WILLING TO PAY FOR*.

The problem is that for most people there isn't really a *NEED* for backup
systems as the primary systems aren't generally mission critical (on the
whole it isn't going to cause death or injury around the home if the lights
go out) and so the cost of implementing those failover systems usually ends
up being spent on prettier switches or a big telly...

Phil

> -----Original Message-----
> From: ukha_d@xxxxxxx [mailto:ukha_d@xxxxxxx] On Behalf Of
> Neil Ball
> Sent: 14 January 2006 19:27
> To: ukha_d@xxxxxxx
> Subject: RE: [ukha_d] HA without fallback-CBUS
>
> Depends on the risk I suppose, most lighting controls I've dealt with
have
> no graceful failure - if the thing crashes then the lights can do
almost
> anything! If it's a hardware failure then again it could fail on or
off.
> In
> terms of programmable BMS systems then it is most unlikely that there
is
> graceful shutdown unless it has been specifically coded by a competent
> commissioning engineer - the basic firmware has no way of knowing what
> application it will be installed for or what strategies will be
loaded.
> With
> the pre-programmed systems it is more likely to have protection
against
> certain kinds of failure but again this usually depends on the risks
> involved and the applications being controlled.
>
>
>
> Neil B.
>
>
>
>   _____
>
> From: ukha_d@xxxxxxx [mailto:ukha_d@xxxxxxx] On Behalf Of
> Chris Hunter
> Sent: 14 January 2006 12:43
> To: ukha_d@xxxxxxx
> Subject: Re: [ukha_d] HA without fallback-CBUS
>
>
>
> C-Bus, surely, must have good failure strategies built-in, to ensure
> graceful degradation in case of failures ... I'm beginning to wonder !
>
> EIB too ... ?
>
> Chris
>
>
>
> [Non-text portions of this message have been removed]
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