RE: UPS setup

["Andy Nolen-Parkhouse" <aparkhouse@xxxxxxxxx>]

Mike,

Yes these appear to be the right messages.  The first indicates that the
UPS is no longer receiving power.  The second indicates that power to the
UPS was restored.

When you drop an iSeries by removing its power, you should expect that
the following IPL will be abnormal.

As far as your delay time is concerned, I would suggest relying upon your
experience with your local power.  My experience suggests that I can get
short drops of less than a minute (usually a second or two), or I can get
extended outages which would last for longer than twenty minutes.  Rarely
would I get a ten-minute outage.  Because of this I would set my own
delay time at about two minutes, and then begin an orderly shutdown.

Bear in mind that if you set your delay for 8 minutes, if you get a
seven-minute outage followed by a minute of power followed by another
seven-minute outage, you're toast.  You would probably be better off with
a shorter delay.

Are you writing your own monitoring program or just dropping the system?
Domino does appreciate an orderly shutdown and won't get it if you just
power down on short notice.

Regards,
Andy Nolen-Parkhouse

> On Behalf Of Wills, Mike N. (TC)
> Subject: UPS setup
> 
> I know this topic has been discussed a thousand times, but I need some
> clarification.
> 
> We are setting up a new UPS. In testing the new cable and get the
> following
> messages:
> System utility power failed at 030131101828.
> System utility power restored at 030131102018.
> Are these the right messages? Or do these messages have the same
> glamour as
> most IBM messages.
> 
> Also why does it take so long to realize that the power is back on? As
> soon
> as the message came on we turned power back on. There is a span there
> of
> over 1 min.
> 
> In our testing we accidentally brought it down twice in our testing
> (oops).
> However it is just a domino server for one application so not a HUGE
> deal.
> When it came up it did an abnormal IPL. Is this right? How does the
> system
> get shut down?
> 
> Also, I am looking for experience here. Our new UPS will last for 12
> mins at
> max load, now obviously we aren't near max load. What would you suggest
> for
> delay time? I was thinking about 8 mins or so. Thoughts?
> 
> Thanks for your help
> 
> Mike Wills