Sunday, September 26, 2021

Re: CARP Cold Spare

On 2021-09-25, leonard <leonard@zaifman.ca> wrote:
> What is the power draw? I use a 1500 VA apc backups with 6 outlets on ups and 5 on surge protection. As long as your total draw is less than 1200 VA, for < $200 canadian you have a cheap simple solution. Just put on on the ups side and the other on the surge suppressor side. Or buy 2.leonard@on the road

Then, when the UPS is depleted and auto shutdown either failed or
wasn't setup in the first place, you can have two machines failing to
start due to fsck failures, not just one!

> > They experience multi-hour blackouts what seems like once a month;

If they aren't spending the money on lower power servers, the chance
of spending the money on a UPS and battery chain (or more likely,
ATS and generator) capable of surviving multi-hour blackouts is slim.

Seems to me the "cold spare" idea makes complete sense for the
situation described. I would not bother with pfsync for this use.
However, if the network config allows, I _would_ try to get some
low power box (rpi or whatever) connected to serial console
on both routers.

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