I would agree with you. Both redundant and diverse should ensure that a failure to anyone component shouldn’t have affected both supplies.
Sent from my iPhone > On 17 Oct 2018, at 11:34, Paul Civati <[email protected]> wrote: > >> On 17 Oct 2018, at 11:10 am, Robert Williams <[email protected]> wrote: >> >> Thus, the overall claim that our dual feed racks have “Redundant Diverse >> Power” is, IMHO, false. > > Unfortunately as I found out to my own cost, DC providers are vague on these > things and get > away with it. If you walk into a facility that looks the part, and they talk > the talk, you can be fooled > into believing things are redundant or even up to spec when they aren't. > > The simple fact is that you have to get it all nailed down in writing or all > the talk of redundancy > is finger in the air stuff. > > Even then, asking for N+1 power feeds, and N+1 UPS, you almost need a > schematic of how > it’s all connected to be fully aware of the failure modes. > > Too much of all this stuff is marketing BS in my experience. > > Finally, a lot of SLAs are so weak that they find ways of getting around > them, or even if you > make an SLA claim, the payout in no way compensates for the level pain you > will incur during > down time. > > -Paul- > >
