Hi Marco, just to tell you that I've forwarded your question to the Eaton software support, so that they answer or route to the right people since I won't have much time in the coming weeks...
so that you don't end up thinking that we've missed you ;-) cheers, Arnaud 2008/12/10 Marco Chiappero <[email protected]>: > Arnaud Quette ha scritto: >> >> [a quick walk through the ml, still from the UDS/Googleplex...] >> >> Hi Marco, > > Hi Arnaud, good to read you! > >>> A digression about the fan: it's really annoying not just because it's >>> louder than my 100W computer with 4 fans running (yes, it is), but also >>> because there's no need to keep it spinning all the time in a *small*, >>> *650* UPS generating just a *few* watts during normal use (measured with >>> a watt-meter and both the metal cage and the exhaust air are indeed >>> cold). Replacing it with a quieter fan, although fine for the UPS, means >>> void warranty. I'd like to have a little more attention on this aspect, >>> maybe using a thermoregulated fan, when paying 300 euro. >>> But I should address these critics to MGE rather than the NUT mailing >>> list, I know. However, beyond this issues, the UPS has proven to be a >>> good product, good-looking too :) >> >> you've been heard ;-) >> the point you might be missing is that the evolution range is a line >> interactive one, but more for small servers. >> and these are generally in some server rooms. >> for something more SOHO focused (and so less noisy), you should have >> opted out for Ellipse MAX (still line interactive, with 2 outlets >> groups too) > > Well, I knew about the Ellipse MAX but I preferred the Evolution, which > is pure sine wave. Beyond this you are right, but the basic idea is not > to cool something that don't need to be cooled. For example the APC > Smart-UPSs (really similar to the Evolution line, line-interactive, sine > wave) 750VA and 1000VA are totally fanless. I'm sure that the Evolution > 850 and 650 models can run fanless too, at least during normal use > (9-12W don't require an always spinning fan or a fan at all). Moreover I > suppose that nowadays low power UPSs are widespread in offices as much > as in server rooms, expecially the tower versions. > I can now ask you why the Evolution is using two different fan speed if > it supposed to stay in a server room? And, about the heat, where is the > difference, when not running on batteries, beetwen the Ellipse MAX and > the Evolution, fan excluded? Why is the first one fanless while doing > the same thing, with the same tecnology? ;) > Now, let's stop thinking of the fan, I love my Evolution and I like your > presence here. One more reason to prefer MGE. :) > >> can I possibly contact you next week, when I'm back to MGE, to get >> some more feedback? > > Sure! > >> now about the Powershare, these are things that I should have done for >> years... >> but since I've taken over the project leadership, there are far too >> many things I've not been able to give time to. >> now, the situation has evolved since my Eaton'isation. I'll have more >> and more time, and possibly somebody to work with me (but the crisis >> might void this point in the short run though). > > (I know, in these weeks many projects are being delayed or stopped) > I have a couple of questions for you. > 1) It's not clear to me whether the UPS is going to reboot or not when > mains is back again, if it has not been shutted down. Let's consider the > VoIP phone example, if I drain as much as I can my batteries (with the > deep discharge protection on) and the UPS is not shutted down by any > computer before it stops, is it going to reboot when power is restored? > I suppose it's not going to reboot in case the power is restored before > the UPS is dead, right? > 2) The NUT documentation states that, usually, the event triggering the > computer(s) shutdown is the "low battery" state (or a timer when using > upssched). Now I see in psp (for windows, since there is no psp amd64 > for linux :P) that it is possible to call the system shutdown on the > basis of (3) differen criteria. Moreover the "battery charge" criteria > seems not to be related with the low battery precentage (the one > activating the low battery alarm). Is this right? If so, why under NUT > is the "low battery" state the only one setting/criteria triggering the > system shutdown? It would be comfortable to start the power down > procedure when a certain battery charge is reached (not necessarily the > low battery percentage) or when there are still X seconds of runtime > available. The good thing is that the same method can be applied to the > switchable outles. For example I can set the UPS to cut the power on the > outlet.1 when the batteries are at 55% and have NUT starting the > shutdown procedure when the charge is lower than 70%. Or I can start the > system shutdown at 70% and before halting set outlet.1.delay.shutdown. > Unfortunately this require the system(s) to be aware of the outlet it(they) > are using, and is going to complicate the NUT architecture, but such > behaviour would make it *really* powerful! The "low battery" state can be > still useful, to make systems shutdown as fast as they can, > eventually calling the UPS shutdown too. Maybe it can be used as event > for the last computer running, the one controlling the UPS, for example. > However I don't know if this can be achived easly, but maybe it sound > interesting and something can be done... just let me know your opinion! > Many thanks for your attention and thanks for this chat. > > Regards, > Marco _______________________________________________ Nut-upsuser mailing list [email protected] http://lists.alioth.debian.org/mailman/listinfo/nut-upsuser
