10 Best Rackmount Ups 2025 in the United States

The Liebert GXT4-10000RT208 UPS is a powerful rackmount uninterruptible power supply designed to keep critical equipment running smoothly during power outages. With a strong power capacity of 10,000 VA (9,000 watts), it can support high-demand devices commonly found in data centers or server rooms. It uses online double-conversion technology, which means it constantly cleans and stabilizes the power, helping extend the life of the connected equipment and its own batteries. The unit includes lead-acid, hot-swappable batteries that provide about 5 minutes of backup time at full load, which can be extended by adding up to six external battery cabinets if longer runtimes are needed. This makes it suitable for preventing immediate shutdowns and giving time for safe equipment shutdown or power restoration.

The UPS comes in a rackmount form factor but can also be used as a tower, offering flexibility for different setups. It operates at 208 volts and includes a network communication card, enabling remote monitoring and management via a user-friendly app, which is helpful for keeping an eye on power status without being onsite. The UPS is quite heavy (over 200 pounds), so installation may require some planning.

This model is being phased out and replaced by an updated version, the GXT5-10KMVRT6UXLN, so availability might be limited. If you need a robust, reliable UPS with good remote management and the option to expand battery backup time, this unit fits the bill well. For those interested in the latest features, the replacement model should be considered. This UPS is best suited for business environments where maintaining power to critical equipment is essential.

The APC Smart-UPS 1500VA Lithium Ion UPS is designed for those needing reliable power backup in a rackmount format, making it ideal for small to medium-sized businesses and home office setups. With a power capacity of 1500VA and 1350W, it provides sufficient backup for essential equipment, ensuring smooth operation during outages.

A key feature is its pure sine wave output, which is crucial for sensitive electronics, providing stable and clean power. The UPS's runtime depends on the load, but its lithium-ion battery offers faster charging and longer life compared to traditional lead-acid batteries. It also comes with a multi-function LCD that gives real-time status updates and alerts, which is user-friendly and helpful for monitoring.

Connectivity is well-thought-out, featuring six output outlets and an installed network management card for remote monitoring through APC’s SmartConnect. This feature streamlines updates and notifications, though the six-month trial period for SmartConnect after purchase may limit long-term users unless they opt for continued service. In terms of form factor, the 3U rackmount design is compact enough to fit in standard server racks, though its weight (50 pounds) means installation may require two people. The warranty of five years is a strong positive, providing reassurance regarding product longevity and support.

On the downside, some users may find the initial cost to be higher than other UPS options, especially if budget constraints are a concern. Additionally, while the lithium-ion battery offers advantages, it may pose a challenge for those used to replacing lead-acid batteries during maintenance. Moreover, the reliance on SmartConnect for some advanced management features could be seen as a drawback for those who prefer standalone operations.

The APC Smart-UPS 1500VA is a solid choice for users seeking reliable power backup with modern features, though it comes with considerations regarding pricing and maintenance compatibility.

The Tripp Lite SU3000RTXL3U is a robust rackmount UPS designed for environments that need reliable, continuous power protection, such as small to medium server rooms or network closets. It offers a solid power capacity of 3000VA/2400W, which is enough to support multiple critical devices. Its 3U form factor fits into standard rack spaces without taking up too much room. The UPS provides true online operation with a pure sine wave output, ensuring clean and stable power ideal for sensitive equipment. The sealed lead-acid battery type is reliable but, being older technology, may require careful management and eventual replacement. Battery runtime can be expanded to suit different backup needs. It includes nine AC outlets, two of which can be controlled individually, adding convenience for managing different devices.

For connectivity, the UPS features USB and DB9 ports plus a slot for an SNMP web card, which helps with remote monitoring and management. It also protects telephone and Ethernet lines from surges, which is a valuable addition. The unit weighs 75 pounds, reflecting its sturdy build. With a two-year warranty and an impressive $250,000 lifetime insurance, the UPS offers good peace of mind.

Although this model has been discontinued, it remains a dependable choice for those seeking a reliable online UPS for rackmount setups. While newer models may offer more energy-efficient batteries or advanced features, this unit continues to provide strong specifications and solid performance when found in good condition.