UPS For mesh network

[Sw1ft]

Hello Everyone

Would like some advice on getting a ups/s for my mesh network
Current setup
2x UniFi UAP-AC-LR 802.11ac Long-Range (currently using poe injectors)
1x HP PS1810-8G Ethernet Switch

I would like to get an idea how to power this.

would the following be able to supply the ap's and switch with power for 3 hours:
- D-Link DGS-1008P 8 Port poe 10/100/1000 (replace my hp switch with the d-link poe switch)
- Gizzu 8800mAh Mini UPS Dual DC (for the poe switch and ap's)

OR
- Gizzu 8800mAh Mini UPS Dual DC (for the switch)
- 2x UltraLAN Micro UPS (DC & PoE) - 45W 8.8AH (for the ap's)

my biggest worry is the ups/s is too small

​

 

[Switch]

- D-Link DGS-1008P 8 Port poe 10/100/1000 (replace my hp switch with the d-link poe switch)
- Gizzu 8800mAh Mini UPS Dual DC (for the poe switch and ap's)

This is the better approach imo, centralised power supply that is easy to scale up to bigger/more power if needed.

 

[zenzan]

Hello Everyone

Would like some advice on getting a ups/s for my mesh network
Current setup
2x UniFi UAP-AC-LR 802.11ac Long-Range (currently using poe injectors)
1x HP PS1810-8G Ethernet Switch

I would like to get an idea how to power this.

would the following be able to supply the ap's and switch with power for 3 hours:
- D-Link DGS-1008P 8 Port poe 10/100/1000 (replace my hp switch with the d-link poe switch)
- Gizzu 8800mAh Mini UPS Dual DC (for the poe switch and ap's)

OR
- Gizzu 8800mAh Mini UPS Dual DC (for the switch)
- 2x UltraLAN Micro UPS (DC & PoE) - 45W 8.8AH (for the ap's)

my biggest worry is the ups/s is too small

​

So welcome to the /spit "fun" of vendors breaking standard PoE and doing this stupid-ass 24V thing because that is what's forcing you to use those 24V PoE injectors instead of just feeding them straight off a PoE switch the way you should be.

That said, Mikrotik (the other clowns that do this) have the most magic little box that takes standard 802.3 PoE in and converts it down to the 24V that your APs are using. I ran Ubiquiti IP cameras (720p, we got them waaay back) on them for years and never once had an issue, despite changing the source PoE switch around a few times (yay lightning).

I work in the Randburg area and this topic is within my scope, PM if you want to take it further.

This would then concentrate your power concern down to just the switch* : you have 2x PoE, and 2 in hand for future expansion. So then, to protected (id est off small UPS) power to the switch: your "too small" concern is another way of saying "last long enough" (I would guess for load shedding) so, what kind of uptime are you aiming at? Because that is your path to choosing which small/lithium UPS to use.

* kudos on selecting DC-powered, it makes getting backup power to it easier.

 

[Sw1ft]

So welcome to the /spit "fun" of vendors breaking standard PoE and doing this stupid-ass 24V thing because that is what's forcing you to use those 24V PoE injectors instead of just feeding them straight off a PoE switch the way you should be.

That said, Mikrotik (the other clowns that do this) have the most magic little box that takes standard 802.3 PoE in and converts it down to the 24V that your APs are using. I ran Ubiquiti IP cameras (720p, we got them waaay back) on them for years and never once had an issue, despite changing the source PoE switch around a few times (yay lightning).

I work in the Randburg area and this topic is within my scope, PM if you want to take it further.

This would then concentrate your power concern down to just the switch* : you have 2x PoE, and 2 in hand for future expansion. So then, to protected (id est off small UPS) power to the switch: your "too small" concern is another way of saying "last long enough" (I would guess for load shedding) so, what kind of uptime are you aiming at? Because that is your path to choosing which small/lithium UPS to use.

* kudos on selecting DC-powered, it makes getting backup power to it easier.

so im looking at 4 hours, in the end I actually used a 12v switch (had one lying around) and 3 mini ups's thanks to @GadgetGremlin.