[vcf-midatlantic] UPS (Uninterruptible Power Supplies) was: How's Everyone Doing

[Jeffrey Brace]

I decided to make a new thread since there is a lot of interest in this
topic, etc.

@Dave Mcguire. Thanks for the tip on where to buy replacement batteries.

As far as I know APC is the most recommended brand.
I see others are using Panasonic.
I'm curious to know which brands everyone recommends or discourages?

On Fri, Apr 24, 2020 at 1:02 PM Mike Loewen via vcf-midatlantic <
vcf-midatlantic at lists.vcfed.org> wrote:

> On Fri, 24 Apr 2020, Ethan O'Toole via vcf-midatlantic wrote:
>
> > I used to work for a large music streaming provider and we had thousands
> and
> > thousand of servers. The data center would put out a notice that they're
> > going to do UPS maintenance or Switchgear maintenance... and usually
> that
> > night we would have maybe up to 20 servers have issues. Hard hang or
> maybe a
> > reboot. Meanwhile everything looked okay.
>
>     At one point, I had a production server in the data center, an IBM
> RS6000
> with redundant power supplies (2). The techs were moving systems to a
> different power bus and unplugged one of the supplies: my system promptly
> shut
> down. It turned out that my system required THREE power supplies before
> redundancy was in effect. Oops.
>
>
> Mike Loewen                             mloewen at cpumagic.scol.pa.us
> Old Technology                          http://q7.neurotica.com/Oldtech/
>


-- 
=========================================
Jeff Brace
Vice President & Board Member, VCF East Showrunner
Vintage Computer Federation
http://www.vcfed.org/
jeffrey at vcfed.org

-- 
=========================================
Jeff Brace
Vice President & Board Member, VCF East Showrunner
Vintage Computer Federation
http://www.vcfed.org/
jeffrey at vcfed.org