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