It's a bit of an emergency. I m in Fortune IT mall doing some shopping and I realize it would be a good idea to upgrade my UPS. The problem is I m not good at this kind of calculation. What do I need to plug in :

A small computer

A NAS (4 x 4 TB)

A switch router

A 8 ports switch

A 8 ports PoE switch to power 5 IP cameras

Roughly what kind of UPS am I looking for ?

Thanks

JJ

Just to add confusion, I would have two, one for the PC and NAS, the other to run the network kit and cameras.

Say, 2 x 1000 VA units would to the trick.

Although 1000 VA is way oversize for the network kit that should keep it and the cameras going for at least a couple of hours.

Without doingany calcilations the cameras and switches would probably add no more than 50 watts to your computer consumption, but my advice for a UPS would always be buy the biggest you can afford and fit in your tech room.

The main difference is the battery size and those speced for higher power will last longer with lower power consumption

buy the biggest you can afford and fit in your tech room.

This.

Just to add confusion, I would have two, one for the PC and NAS, the other to run the network kit and cameras.

Say, 2 x 1000 VA units would to the trick.

Although 1000 VA is way oversize for the network kit that should keep it and the cameras going for at least a couple of hours.

That's what I did. I would eventually need more UPS for other systems in the house so it is not wasted money.

Question : Vendor asked me if the computer was an i5 or i7. Honestly, what does it change ? Is it really a big difference in electricity consumption between the two or is it just a trick to push for a more expensive UPS ?

Just to add confusion, I would have two, one for the PC and NAS, the other to run the network kit and cameras.

Say, 2 x 1000 VA units would to the trick.

Although 1000 VA is way oversize for the network kit that should keep it and the cameras going for at least a couple of hours.

That's what I did. I would eventually need more UPS for other systems in the house so it is not wasted money.

Question : Vendor asked me if the computer was an i5 or i7. Honestly, what does it change ? Is it really a big difference in electricity consumption between the two or is it just a trick to push for a more expensive UPS ?

An I7 would be more power hungry than an I5 of the same version (year) but the differecne would not be a lot. I would not be surprised to find that an older generation I5 would be more power hungry than a new I7 but I must admit I have not checked. The only other logic for asking about if you have an I7 or an I5 would be that somebody who went to the expence of buying an I5 would probably also install a high powered graphics card which would effect the power consumption a lot more.

Of more important ote is the fact that computer power supplies are usually rated in Watts and the UPS in VA which are NOT the same under many circumstances.

Depending on the quality of the com,puter power supply there can be as much as 20% difference so a 1000 VA (1KVA) UPS will only drive an 800 watt fully loaded (poor quality) computer powersupply for the advertised duration.

However as I said in my first post don't worry about all the calculations, if and buts, just by the biggest you can, which you appear to have done and I am sure will be more than enough for your needs.