4 ms·

What a stupid article. It doesn't tell you anything beyond "no, buy our products instead". WHY is it bad? HOW does it fail? I mean, it's possible that I don't

by lucumo 2y ago

What a stupid article. It doesn't tell you anything beyond "no, buy our products instead". WHY is it bad? HOW does it fail? I mean, it's possible that I don't know enough about UPSes to understand the finer details and all this would be obvious to someone who does. But presumably they already know why it's a bad idea, and don't need this particular article to explain them. The amount of scare words and the lack of detail honestly make me believe it probably IS okay to do, and Eaton just wants to scam some extra money out of people. It's just the posts in this thread that make me take it slightly more seriously.

tssge 2y ago
>Eaton just wants to scam some extra money out of people Seems quite improbable that would be the purpose of the article. The article is basically saying "buy a single UPS instead of buying two to daisy chain them expecting to get better results". If anything, such advice would lead to people buying less devices. Of course if one had two UPSes laying around for nothing, then I guess daisy chaining might come to mind to get better capacity or something for no extra price. However, generally people don't randomly have UPSs laying around for no reason, so it would make sense to buy higher capacity UPS than two lower capacity UPSs to daisy chain them anyways (and for probably quite similar total cost of ownership).
- nixpulvis 2y ago
  Let’s say I do have two UPSs lying around though, and a soldering iron.
pixl97 2y ago
>make me believe it probably IS okay to do Yea, as someone that ran their own micro ISP for a while, and worked for larger ISPs, no it's not ok to do at all. APC brand was the absolute worst about immediately tripping when plugged into another UPS. Eaton online UPS' actually handled it ok in comparison, but they are typically pretty expensive units. This is definitely a case of the vendor attempting to save you money. Get an ATS on anything that doesn't accept dual power.
- tssge 2y ago
  >APC brand was the absolute worst about immediately tripping when plugged into another UPS. At least from my experience of owning multiple APC UPS devices, they have a customizable acceptable power quality setting. In such cases setting them to accept the absolute worst quality of power could probably stop them from tripping on bad power input. No idea if this affects the end devices, however there's probably a reason other than simply extra profit for the default power quality tolerance setting on those devices. Generally they are set to rather low tolerance threshold as the expected usage scenario is servers and other relatively sensitive equipment. The models I own aren't really the most expensive either, some of the lower end tower models and they still have configurable acceptable power input settings available. Regarding them tripping on bad input and being "absolute worst", I consider this tripping a feature more than an anti-feature, especially as it is user configurable. EDIT: Also wanted to add that it is actually _preferable_ for UPS to trip as immediately as possible on bad power input. That is the only purpose of such product after all: to protect the devices attached to it from bad or otherwise inadequate power input.

by lucumo 2y ago

tssge 2y ago

>Eaton just wants to scam some extra money out of people Seems quite improbable that would be the purpose of the article. The article is basically saying "buy a single UPS instead of buying two to daisy chain them expecting to get better results". If anything, such advice would lead to people buying less devices. Of course if one had two UPSes laying around for nothing, then I guess daisy chaining might come to mind to get better capacity or something for no extra price. However, generally people don't randomly have UPSs laying around for no reason, so it would make sense to buy higher capacity UPS than two lower capacity UPSs to daisy chain them anyways (and for probably quite similar total cost of ownership).

nixpulvis 2y ago
Let’s say I do have two UPSs lying around though, and a soldering iron.

pixl97 2y ago

>make me believe it probably IS okay to do Yea, as someone that ran their own micro ISP for a while, and worked for larger ISPs, no it's not ok to do at all. APC brand was the absolute worst about immediately tripping when plugged into another UPS. Eaton online UPS' actually handled it ok in comparison, but they are typically pretty expensive units. This is definitely a case of the vendor attempting to save you money. Get an ATS on anything that doesn't accept dual power.

tssge 2y ago
>APC brand was the absolute worst about immediately tripping when plugged into another UPS. At least from my experience of owning multiple APC UPS devices, they have a customizable acceptable power quality setting. In such cases setting them to accept the absolute worst quality of power could probably stop them from tripping on bad power input. No idea if this affects the end devices, however there's probably a reason other than simply extra profit for the default power quality tolerance setting on those devices. Generally they are set to rather low tolerance threshold as the expected usage scenario is servers and other relatively sensitive equipment. The models I own aren't really the most expensive either, some of the lower end tower models and they still have configurable acceptable power input settings available. Regarding them tripping on bad input and being "absolute worst", I consider this tripping a feature more than an anti-feature, especially as it is user configurable. EDIT: Also wanted to add that it is actually _preferable_ for UPS to trip as immediately as possible on bad power input. That is the only purpose of such product after all: to protect the devices attached to it from bad or otherwise inadequate power input.