# Ups

Published articles for Ups.

This is one page of public article previews, not the complete archive. Follow Next page to continue. Summaries are not the original full articles.

## OpenNMC is an open replacement for expensive APC management cards

DevFeed: [OpenNMC is an open replacement for expensive APC management cards](<https://devfeed.tech/articles/opennmc-is-an-open-replacement-for-expensive-apc-management-cards-10474.md>)

Original publisher: [Read original article](<https://www.jeffgeerling.com/blog/2026/opennmc-apc-ups-replacement-card/>)

Author: jeff@jeffgeerling.com (Jeff Geerling)

Published: 2026-09-08T16:00:00Z

Content type: article

Language: en

Sources: [Jeff Geerling](<https://devfeed.tech/sources/jeff-geerling.md>)

Topics: [Opennmc](<https://devfeed.tech/topics/opennmc.md>), [Homelab](<https://devfeed.tech/topics/homelab.md>), [Hardware](<https://devfeed.tech/topics/hardware.md>), [Open Source](<https://devfeed.tech/topics/open-source.md>), [GitLab](<https://devfeed.tech/topics/gitlab.md>), [Ethernet](<https://devfeed.tech/topics/ethernet.md>), [USB](<https://devfeed.tech/topics/usb.md>), [Crowd Supply](<https://devfeed.tech/topics/crowd-supply.md>), [Reddit](<https://devfeed.tech/topics/reddit.md>)

Tags: [apc](<https://devfeed.tech/tags/apc.md>), [ethernet](<https://devfeed.tech/tags/ethernet.md>), [firmware](<https://devfeed.tech/tags/firmware.md>), [gitlab](<https://devfeed.tech/tags/gitlab.md>), [hardware](<https://devfeed.tech/tags/hardware.md>), [homelab](<https://devfeed.tech/tags/homelab.md>), [open-source](<https://devfeed.tech/tags/open-source.md>), [opennmc](<https://devfeed.tech/tags/opennmc.md>), [sponsored](<https://devfeed.tech/tags/sponsored.md>), [ups](<https://devfeed.tech/tags/ups.md>), [usb](<https://devfeed.tech/tags/usb.md>)

### AI overview

The article tests OpenNMC, an open-source replacement for proprietary APC UPS management cards. It describes hot-pluggable installation, built-in NUT server support, Ethernet and wireless connectivity, and an initial USB-C serial setup.

### Source excerpt

UPSes are typically the most boring part of your homelab, but they're important. One of their main jobs is to give servers time to shut down safely if the power goes out. Another job is to condition your power so your servers can run smoothly. To do both of those things well, you need a smart interface. And at least with APC, there are tons of older UPSes that use Network Management Cards. The one pictured below is the NMC 2, and I pulled out of my old APC Smart-UPS 2200 XL (pictured above).

## What N, N+1, 2N, and 2(N+1) Mean in a Data Center

DevFeed: [What N, N+1, 2N, and 2(N+1) Mean in a Data Center](<https://devfeed.tech/articles/what-n-n-1-2n-and-2-n-1-mean-in-a-data-center-40160.md>)

Original publisher: [Read original article](<https://blog.j2sw.com/netops/data-center-redundancy-n-n1-2n/>)

Author: j2sw

Published: 2026-08-27T13:59:08Z

Content type: tutorial

Language: en

Sources: [Justin Wilson (j2sw)](<https://devfeed.tech/sources/justin-wilson-j2sw.md>)

Topics: [datacenter](<https://devfeed.tech/topics/datacenter.md>), [data](<https://devfeed.tech/topics/data.md>)

Tags: [2n-redundancy](<https://devfeed.tech/tags/2n-redundancy.md>), [capacity](<https://devfeed.tech/tags/capacity.md>), [colocation](<https://devfeed.tech/tags/colocation.md>), [components](<https://devfeed.tech/tags/components.md>), [cooling](<https://devfeed.tech/tags/cooling.md>), [data-center](<https://devfeed.tech/tags/data-center.md>), [data-center-power](<https://devfeed.tech/tags/data-center-power.md>), [equipment](<https://devfeed.tech/tags/equipment.md>), [internet-architecture](<https://devfeed.tech/tags/internet-architecture.md>), [maintenance](<https://devfeed.tech/tags/maintenance.md>), [n-plus-1-redundancy](<https://devfeed.tech/tags/n-plus-1-redundancy.md>), [network-operations](<https://devfeed.tech/tags/network-operations.md>), [power-distribution](<https://devfeed.tech/tags/power-distribution.md>), [system](<https://devfeed.tech/tags/system.md>), [ups](<https://devfeed.tech/tags/ups.md>)

### AI overview

This article explains what data center redundancy ratings N, N+1, N+2, 2N, and 2(N+1) indicate about component capacity, failures, maintenance, cooling, and alternate paths.

### Source excerpt

Have you ever looked at a data center marketing slick and wondered what N, N+1, 2N, and 2(N+1) actually mean? The main thing they tell you is how many components can fail before the system drops below the capacity needed to support the load. When I evaluate a data center, I want to know what ... Read more The post What N, N+1, 2N, and 2(N+1) Mean in a Data Center appeared first on Justin Wilson (j2sw).

## The Mini Rack Accessories You Didn't Know You Needed

DevFeed: [The Mini Rack Accessories You Didn't Know You Needed](<https://devfeed.tech/articles/the-mini-rack-accessories-you-didn-t-know-you-needed-10604.md>)

Original publisher: [Read original article](<https://technotim.com/posts/minirack-accessories/>)

Author: Techno Tim

Published: 2026-07-28T13:00:00Z

Content type: article

Language: en

Sources: [Techno Tim](<https://devfeed.tech/sources/techno-tim.md>)

Topics: [Homelab](<https://devfeed.tech/topics/homelab.md>), [Hardware](<https://devfeed.tech/topics/hardware.md>), [Network](<https://devfeed.tech/topics/network.md>)

Tags: [3d](<https://devfeed.tech/tags/3d.md>), [accessories](<https://devfeed.tech/tags/accessories.md>), [building](<https://devfeed.tech/tags/building.md>), [hardware](<https://devfeed.tech/tags/hardware.md>), [homelab](<https://devfeed.tech/tags/homelab.md>), [kvm](<https://devfeed.tech/tags/kvm.md>), [lighting](<https://devfeed.tech/tags/lighting.md>), [network](<https://devfeed.tech/tags/network.md>), [products](<https://devfeed.tech/tags/products.md>), [remote](<https://devfeed.tech/tags/remote.md>), [storage](<https://devfeed.tech/tags/storage.md>), [testing](<https://devfeed.tech/tags/testing.md>), [ups](<https://devfeed.tech/tags/ups.md>)

### AI overview

This article evaluates accessories for building a 10-inch mini rack, covering shelves, cooling, patch panels, lighting, displays, power accessories, a compact UPS, and a four-port network KVM. The author installs the equipment in a 12U DeskPi RackMate T2 and discusses its design, usability, and hardware limitations.

### Source excerpt

The easy part of building a mini rack is deciding what goes inside it. You probably already know which switch, mini PC, or storage device you want. Everything after this is the hard part. How do you power everything without filling the rack with adapters? Where does the UPS go? How do you handle cooling, cables, patching, remote access, and a local display without using up every rack unit? T...

## My 2026 Homelab Tour (Rack + Servers + Network + Storage)

DevFeed: [My 2026 Homelab Tour (Rack + Servers + Network + Storage)](<https://devfeed.tech/articles/my-2026-homelab-tour-rack-servers-network-storage-10559.md>)

Original publisher: [Read original article](<https://technotim.com/posts/homelab-hardware-tour-2026/>)

Author: Techno Tim

Published: 2026-02-26T13:00:00Z

Content type: article

Language: en

Sources: [Techno Tim](<https://devfeed.tech/sources/techno-tim.md>)

Topics: [Homelab](<https://devfeed.tech/topics/homelab.md>), [Network](<https://devfeed.tech/topics/network.md>), [Server](<https://devfeed.tech/topics/server.md>), [5G](<https://devfeed.tech/topics/5g.md>), [Ansible](<https://devfeed.tech/topics/ansible.md>), [Pi-hole](<https://devfeed.tech/topics/pihole.md>), [USB](<https://devfeed.tech/topics/usb.md>), [ssh](<https://devfeed.tech/topics/ssh.md>)

Tags: [2026](<https://devfeed.tech/tags/2026.md>), [5g](<https://devfeed.tech/tags/5g.md>), [ansible](<https://devfeed.tech/tags/ansible.md>), [backup](<https://devfeed.tech/tags/backup.md>), [dns](<https://devfeed.tech/tags/dns.md>), [homelab](<https://devfeed.tech/tags/homelab.md>), [hosting](<https://devfeed.tech/tags/hosting.md>), [house](<https://devfeed.tech/tags/house.md>), [hub](<https://devfeed.tech/tags/hub.md>), [internet](<https://devfeed.tech/tags/internet.md>), [network](<https://devfeed.tech/tags/network.md>), [poe](<https://devfeed.tech/tags/poe.md>), [raspberry-pi](<https://devfeed.tech/tags/raspberry-pi.md>), [self-hosting](<https://devfeed.tech/tags/self-hosting.md>), [server](<https://devfeed.tech/tags/server.md>), [servers](<https://devfeed.tech/tags/servers.md>), [ssh](<https://devfeed.tech/tags/ssh.md>), [storage](<https://devfeed.tech/tags/storage.md>), [testing](<https://devfeed.tech/tags/testing.md>), [ups](<https://devfeed.tech/tags/ups.md>)

### AI overview

A 2026 tour of a homelab covering network connectivity, backup 5G internet, whole-home wiring, PoE equipment, Raspberry Pi systems, UPS coordination, NUT Server, Pi-hole, and Ansible-based SSH key rotation.

### Source excerpt

My homelab has changed again... 2026. This year turned into a full evolution: network upgrades, compute refreshes, storage testing, and a bunch of power/UPS changes that change how I run (and recover) everything. Self-hosting guide next - subscribe for the follow up. Watch the video The wall of tech (everything that doesn't fit the rack) Before we even touch the rack, let's start with th...

## HomeLab Hardware Tour! (Late 2023)

DevFeed: [HomeLab Hardware Tour! (Late 2023)](<https://devfeed.tech/articles/homelab-hardware-tour-late-2023-10557.md>)

Original publisher: [Read original article](<https://technotim.com/posts/homelab-hardware-tour-2023/>)

Author: Techno Tim

Published: 2023-12-08T13:00:00Z

Content type: article

Language: en

Sources: [Techno Tim](<https://devfeed.tech/sources/techno-tim.md>)

Topics: [Homelab](<https://devfeed.tech/topics/homelab.md>), [Hardware](<https://devfeed.tech/topics/hardware.md>), [Server](<https://devfeed.tech/topics/server.md>), [networking](<https://devfeed.tech/topics/networking.md>)

Tags: [hardware](<https://devfeed.tech/tags/hardware.md>), [homelab](<https://devfeed.tech/tags/homelab.md>), [jellyfin](<https://devfeed.tech/tags/jellyfin.md>), [networking](<https://devfeed.tech/tags/networking.md>), [nvme](<https://devfeed.tech/tags/nvme.md>), [power-management](<https://devfeed.tech/tags/power-management.md>), [server](<https://devfeed.tech/tags/server.md>), [ssd](<https://devfeed.tech/tags/ssd.md>), [unifi](<https://devfeed.tech/tags/unifi.md>), [ups](<https://devfeed.tech/tags/ups.md>)

### AI overview

A late-2023 tour of a home lab and server rack, covering servers, networking equipment, UPS units, power management, storage, lighting, TV gear, and an Intel NUC mini cluster.

### Source excerpt

Well, here it is! My Late 2023 Server Rack and HomeLab tour! I've upgraded, replaced, added, and consolidated quite a bit since my last tour! New servers, new networking, UPS, cabling, power management, and more new tech on the wall! 📺 Watch Video In case you missed it, check out my HomeLab Services Tour (2024)! Join the conversation It's time of year again! Time for my Server Rack...

## Techno Tim HomeLab Server Room Tour! (Late 2022)

DevFeed: [Techno Tim HomeLab Server Room Tour! (Late 2022)](<https://devfeed.tech/articles/techno-tim-homelab-server-room-tour-late-2022-10569.md>)

Original publisher: [Read original article](<https://technotim.com/posts/homelab-tour-2022/>)

Author: Techno Tim

Published: 2022-12-24T14:00:00Z

Content type: article

Language: en

Sources: [Techno Tim](<https://devfeed.tech/sources/techno-tim.md>)

Topics: [Homelab](<https://devfeed.tech/topics/homelab.md>), [Server](<https://devfeed.tech/topics/server.md>), [networking](<https://devfeed.tech/topics/networking.md>), [Automation](<https://devfeed.tech/topics/automation.md>), [Internet of things](<https://devfeed.tech/topics/iot.md>)

Tags: [apc](<https://devfeed.tech/tags/apc.md>), [automation](<https://devfeed.tech/tags/automation.md>), [homelab](<https://devfeed.tech/tags/homelab.md>), [iot](<https://devfeed.tech/tags/iot.md>), [networking](<https://devfeed.tech/tags/networking.md>), [power-management](<https://devfeed.tech/tags/power-management.md>), [server](<https://devfeed.tech/tags/server.md>), [unifi](<https://devfeed.tech/tags/unifi.md>), [ups](<https://devfeed.tech/tags/ups.md>), [zigbee](<https://devfeed.tech/tags/zigbee.md>)

### AI overview

A late-2022 tour of Techno Tim's revamped home lab and server racks, covering upgraded servers, networking equipment, UPS units, power management, automation, IoT devices, storage, cable management, and rack lighting.

### Source excerpt

Well, here it is! My Late 2022 Server Rack and HomeLab tour! This is a special one because I just revamped my entire rack.I've upgraded, replaced, added, and consolidated quite a bit since my last tour! New servers, new networking, new UPS, new power management, and even a whole entire wall of tech gear.I also added lots of automation and IoT devices! Join me as we walk through my server rac...