This post is mostly for myself. I’m just putting my Sunday morning thoughts down for later review and consideration.
When Selecting replacements batteries for my Eaton 5PX UPS (5PX2200RT & 5PXEBM48RT), I began to think about: when the power goes off, why can’t I keep using my laptop?
Usually, I still have an Internet connection: the ISP isn’t going offline.
Why not turn off the two servers in the basement, and anything else not needed to keep me online? I might get an hour or two out of that.
This is my part of my network diagram.
First idea – power off main switch
At present, the gateway/router/firewall is connected into the us-16-xg switch on the left. The theory being: most of the traffic flows between hosts on that switch: the two main servers and my office.
If I move:
* the firewall (not shown) to the usw-24-poe
* the usw-8-150w (top of diagram) to the usw-24-poe
When the power goes off, I can power off the us-16-xg.
Second idea
Leave the network topology as it is now. See how much power stuff uses. Perhaps power them off as needed when the power goes off.
LibreNMS, via snmp, already has graphs, like this, pulled from the PDU:
Must do
I must tidy up the rack cabling. Especially the power cables. At present, I do not know what outlets on the Eaton PDU power what. Once I have that properly documented (again), I’ll be able to choose what items to power off.
