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On 06/14/2016 11:23 AM, Russell Reiter via talk wrote:<br>
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<pre wrap="">On 6/14/16, D. Hugh Redelmeier via talk <a class="moz-txt-link-rfc2396E" href="mailto:talk@gtalug.org"><talk@gtalug.org></a> wrote:
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<pre wrap="">We have a computer that started doing random and frequent restarts on the
weekend. We don't know why.
Any suggestions?
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You don't mention whether or not the system is protected by UPS.
I live in an area with somewhat spotty electrical service, an older
building near the exhibition grounds. When they liven up the CNE
grounds in the spring, I experience brown-outs quite often.
Most recently the city has replaced the streetcar overhead wires and
de-energized and re-energized the system, both times I had spontaneous
reboots. One of the TTC engineers told me the new streetcars require
more voltage and they are replacing the wires with heavier gauge ones
throughout the city.
Are you near streetcar tracks where they may be replacing wiring or
perhaps near one of the transformers which convert AC to DC?
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As a note I have been burned by lower cost UPSs and heavily loaded
servers with no hold time in the power supplies.<br>
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A lot of UPSs switch from the mains to battery once the power drops
and that delay can be enough to cause some power supplies to lose
enough power to fail.<br>
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<pre class="moz-signature" cols="72">--
Alvin Starr || voice: (905)513-7688
Netvel Inc. || Cell: (416)806-0133
<a class="moz-txt-link-abbreviated" href="mailto:alvin@netvel.net">alvin@netvel.net</a> ||
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