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r/homelab on Reddit: Getting a VERTIV Liebert GXT5 working with Network UPS Tools (NUT)
August 23, 2025 -
I recently got a very good deal on a VERTIV Liebert GXT5-1500LVRT2UXL UPS. I am trying to get it setup with NUT so it can gracefully shutdown my equipment. This is my first time working with NUT. Before this I just let my UPS go until there is no more power and then cut power to my systems (Which is NOT good for them).
This device connects via USB to my NAS (Running Truenas Scale Community 25.04) which I would like to act as the master for NUT. The UPS is not being detected by NUT but is visible in lsusb.
I have tried to use the usbhid-ups driver and have manually set the port to /dev/hidraw0 (Where the UPS is mounted) with no success.
Any advice on anything else I can try to get this UPS working?
UPDATE 1: I just found this comment from about a year ago which indicates the NUT support for this brand is a ongoing issue. I also agree that even though this UPS is very nice the fan noise is a issue for a office environment. Given this brand does not have many records in the NUT Hardware compatibility list I suspect supporting NUT is not a priority for VERTIV Liebert.
UPDATE 2: u/Outrageous_Ad_3438 gave some good solutions that I am going to take a look at for my setup. I am going to mark this as solved.
Main takeaway from this is this UPS does NOT support NUT but can be used with the Vertiv Power Assist software running on a different computer and using a script or custom software on that system pretend to be a NUT master and shutdown the NAS.
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when you setup nut, it's you're working the USB device and bus number not the /dev. have a look the following. Although written with Proxmox in mind, the basics are NUT which ever OS you're using. It's the guide I used when setting up my UPS (although it's an APC). Tieing it with TrueNAS is a higher level. https://www.kreaweb.be/diy-home-server-2021-software-proxmox-ups/
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UPDATE 1: I just found this comment from about a year ago which indicates the NUT support for this brand is a ongoing issue. I also agree that even though this UPS is very nice the fan noise is a issue for a office environment. Given this brand does not have many records in the NUT Hardware compatibility list I suspect supporting NUT is not a priority for VERTIV Liebert.
Vertiv
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Do you need/want a cloud management portal, or can you manage them individually and monitor them using your SNMP monitoring tool? I'm very happy with our growing family of Eaton devices. I have years of experience with APC/Schneider too, but we're moving towards Eaton. More on reddit.com
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March 23, 2024'unsafe' Vertiv UPS firmware
To what degice firmware you mean? If you mean on Liebert IntelliSlot Unity Communications Cards than I update it without any problem from about 7 years. More on reddit.com
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April 6, 2025Vertiv Power Assist Headless Alternative?
I've got a vertiv rack mount UPS and wanted to set up the monitoring software for it. It seems the official software only supports a gui version and… More on reddit.com
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November 6, 2023any experiences with a Vertiv Liebert PDX & IntelliSlot Unity Card?
We just installed a new PDX chiller. Here are some of the notes to getting it online and readable via SNMP Support #800-222-5877, option 2 for software Initial IP addressing was done from the panel. Changes can be made through the Web UI. Click on Communications > Configuration > Network > IPv4 Once changes are made, the network card needs to be restarted under Support > Commands - Enable > Restart Enable SNMP Protocol under Communications > Protocols Ensure v1/v2c are enabled under SNMP Configure SNMP values under SNMPv1/v2c Access (There are 20 slots, PRTG server is setup in slot 1) Once changes are made, the network card needs to be restarted under Support > Commands - Enable > Restart More on reddit.com
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September 15, 2023Is Vertiv better than APC for remote monitoring?
Neither is universally better. They are both mature ecosystems. Vertiv RDU101 IS-UNITY is simpler to deploy and supports BACnet/IP and Modbus TCP for industrial integration. APC AP9641 NMC 3 has deeper integration with EcoStruxure IT and broader third-party monitoring support. For most Canadian IT teams running mostly Windows and VMware, APC's ecosystem fits better. For industrial / OT environments, Vertiv often wins.
upsplusbattery.ca
upsplusbattery.ca › home › the battery series › vertiv vs apc ups
Vertiv vs APC UPS: Remote Monitoring & Clean Shutdowns – ...
Which UPS is better for VMware clean shutdown — Vertiv or APC?
APC, by a clear margin. PowerChute Network Shutdown for vCenter / vSphere is the reference implementation. It understands DRS, can shut down VMs in dependency order, and has been the de facto standard for over a decade. Vertiv-aware shutdown plugins for VMware exist but are not as mature.
upsplusbattery.ca
upsplusbattery.ca › home › the battery series › vertiv vs apc ups
Vertiv vs APC UPS: Remote Monitoring & Clean Shutdowns – ...
Can I use SNMP shutdown with both Vertiv and APC?
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upsplusbattery.ca
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Vertiv vs APC UPS: Remote Monitoring & Clean Shutdowns – ...
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networkupstools.org › ups-protocols.html
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March 31, 2026 - HP/Compaq UPS MIB (TXT, 24 KB) Vertiv/Liebert Management Information Base: The MIB module used to register Liebert POWER related SNMP OIDs (TXT, 16 KB) lgpIdent - Liebert SNMP Agent Identification Group (TXT, 20 KB) lgpConditions - Liebert Conditions Registrations (TXT, 176 KB) lgpController - Liebert Controller Group (TXT, 4 KB) lgpEnvironmental - Liebert Environmental Registrations (TXT, 108 KB) lgpFlexible - Liebert Flexible Registrations (TXT, 16 KB) lgpFlexConditions - Liebert Conditions Registrations (TXT, 304 KB) lgpNotifications - Liebert Notifications Registrations (TXT, 16 KB) lgpPdu - Liebert Power Distribution Registrations (TXT, 144 KB) lgpPower - Liebert Power Registrations (TXT, 112 KB) lgpModuleReg - Liebert Module Identities (TXT, 68 KB) lgpSystem - Liebert System Groups (TXT, 20 KB) Offsite links ·
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upsplusbattery.ca › home › the battery series › vertiv vs apc ups
Vertiv vs APC UPS: Remote Monitoring & Clean Shutdowns – UPSPLUSBATTERY
January 12, 2026 - Vertiv-aware shutdown plugins for VMware exist but aren't as mature. ... Yes. Both AP9641 and RDU101 support SNMP v1/v2c/v3 and can send shutdown traps to any monitoring platform or custom daemon. Tools like NUT (Network UPS Tools) on Linux work with both vendors via SNMP.
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vertiv.com › home › products & services › uninterruptible power supplies (ups) › vertiv™ liebert® psi
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snapower.com › home › blog › vertiv ups: the game-changer in uninterrupted power supply
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Vertiv™ Power Assist is a free software used to gracefully shutdown an IT device when the UPS battery backup experiences a threatening condition. The software notifies users of an event, displays key metrics and logs historical data. It is easy to install and protects computers from damage ...