[plug] UPS's with Linux support

[Andrew McMeikan]

Hi all,
	I can't believe $100
 This seems to make a hardware convertor aplicable probably less than $20
 If there is a demand for this give me some hard specs and I'll build it.

	cya,	Andrew...


On Fri, 12 Mar 1999, Paul Wilson wrote:

> If anyone's still interested in Alpha UPSs with Linux, here's the story so
> far.
> 
> * Linux software has been written and will be available in a couple of weeks
> (the CDs are being pressed/printed at the moment). It will cost about $100
> AU and won't be available in source form !  It should be interesting to see
> how well they handle the multitude of Linux kernel/hardware configurations.
> 
> * The low end Alphas are terribly simple minded creatures - Linux has to
> provide a signal to the UPS (via Tx I think), and if the mains disappears,
> the UPS switches the signal back to the server (using Rx).  That's it !
> 
> * This means that genpowerd can't be used in it's current state (it uses Tx
> to kill the inverter in the UPS and won't support other use of that line),
> but could be carved up to do the job.
> 
> * It looks like I'm going to have to produce some carefully crafted
> monitoring software specifically for the dumb Alphas (read hacked   :-)) if
> I can't find something on sunsite to do the job for me.
> 
> If anyone's still awake, I'll let you know what develops.
> 
> Paul
>