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I bought a second hand UPS - 6KWh for not too much money on Ebay. It had
been part of an AS400 type installation and had new batteries.
It has been extremely good and runs 3 machines. FWIW, we had an extended
period (over months) recently where the power company supply was out of
tolerance (too many volts) for significant periods of time and the machine
ran in bypass mode without a glitch.
You might also have a look at Mark Brown's web site where he has a design
for a battery back up unit design. I haven't built this yet, nor am I an EE,
so can't say how it performs. Web site address and correspondence relating
to it are in the archives. good luck
----- Original Message -----
From: "Doug Tucker" <dougtucker@xxxxxxxxxxx>
To: <omega-list@xxxxxxxxxx>
Sent: Thursday, May 27, 2004 3:21 PM
Subject: data and hyperserver
> I finally got the data I was asking for yesterday. I had no luck with the
> hyperserver lite. I tried their history downloader and that worked great.
> All the data came in just fine, except for the S&P E-Mini. Seems like
there
> was an abreviated amount of ticks as my daily tick count was about half of
> average. It seems that the IQ site would have the same data as the
Satellite
> data. I only needed to fill in a hole of an hour, but it overwrote my
whole
> days data so I have a very compressed tick chart for yesterday. Has anyone
> experienced this and have any thoughts as to why?
> Also, I need to buy a battery backup. Any suggestions on what to get so I
> can power the PC, DTN box, on one monitor for at least long enough to shut
> down the global server so I don't lose a lot of data. Even with a one
minute
> power disruption I can lose an hour or two's worth of data and then I'm
down
> for the day.
> Thanks,
> Doug
>
>
>
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