one nice thing about the apc ups' is their ability to respond to snmp
queries. I wrote some scripts (and a job) that monitor an apc ups from a
3000. as long as all is well....the monitor job quietly does it's little
thing. it's when <something> 'interesting' happens that things liven up.
in particular, when the monitor detects that power has switched to the ups,
it's starts sending alerts (including emailing folks). there is also the
notion of a threshold in the script -- primarily its for when battery life
is getting low. when the threshold is crossed, the scripts streams a
shutdown job and then calls the shutdown command (that is ever so cleverly
wrapped in a udc that's available on jazz ;-). with this in place, the
system will/can gracefully shut itself down without intervention.
if want the scripts, let me know offline....
if you want to craft your own solution, here are the mibs I use in the
scripts:
setvar _um_mib_prefix ".1.3.6.1.4.1.318."
setvar _um_battery_status "Battery Status,1.1.1.2.1.1.0"
setvar _um_battery_replace "Battery Replacement Indicator,1.1.1.2.2.4.0"
setvar _um_pct_left "Pct Battery Capacity Left,1.1.1.2.2.1.0"
setvar _um_basic_status "Basic Status,1.1.1.4.1.1.0"
setvar _um_basic_output "Basic Output State,1.1.1.11.1.1.0"
setvar _um_time_left "Battery Time Remaining,1.1.1.2.2.3.0"
- d
---
Donna Hofmeister
Allegro Consultants, Inc.
408-252-2330
> -----Original Message-----
> From: HP-3000 Systems Discussion [mailto:[log in to unmask]] On
> Behalf Of James B. Byrne
> Sent: Thursday, July 31, 2008 12:13 PM
> To: [log in to unmask]
> Subject: Re: [HP3000-L] 3KVA UPS units.
>
> On Thu, July 31, 2008 09:34, Chris Bartram wrote:
>
> > FWIW I go with APC units in all my data centers. They've been highly
> > reliable, their management capabilities are superb, they have
> > serial-connect, USB-connect, and network-connected shutdown agents
> > available
> > for a wide variety of Oses (not MPE though), and their support has
> been
> > superb. I've used nearly every model they support, from small 200-
> 1400watt
> > units at home to a pool of redundant/parallel 120kw Silcon UPSes in
> one of
> > the data centers I manage.
>
> OK. I will look into APC. I use their gear on all of our workstations
> and
> for our pbx. The HP PowerTrust units came with the equipment cabinets
> when
> we moved to the HP3000-918LX and we have used them ever since. I do
> recall that we seem to have had much more trouble with the PT UPS units
> than we have had with the 918.
>
> >
> > Keep in mind that nothing but the old/obsolete Powertrust units will
> > "speak" via a serial interface so that a 3000 can do the auto-
> shutdown
> > stuff built into MPE/iX,
>
> I never managed to get this to work. I kept getting some obscure error
> in
> the HP3000 configuration and despite begin given assistance here on the
> list I never did get it working. So, no loss there in any case.
>
> > You may have also discovered the hard way (as we did) that PowerTrust
> > units REALLY don't like to receive power from other (upstream) UPSes.
>
> Both units are in separate cabinets and both plug directly into the
> mains.
> As a matter of practice arising from some bad experiences in the mid
> 1990s
> I do not daisy chain UPS units. For some vendors, a sine wave turned
> out
> to be more of a metaphor than a reality.
>
> Thanks for the help.
>
>
> --
> *** E-Mail is NOT a SECURE channel ***
> James B. Byrne mailto:[log in to unmask]
> Harte & Lyne Limited http://www.harte-lyne.ca
> 9 Brockley Drive vox: +1 905 561 1241
> Hamilton, Ontario fax: +1 905 561 0757
> Canada L8E 3C3
>
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