10 Best Rackmount Ups 2025 in the United States

The APC Smart-UPS RT 6000VA Rack-Mountable UPS is designed for users needing reliable backup power in a rackmount form, making it suitable for small to medium server rooms or network closets. With a power capacity of 6000VA/4200W, it can handle substantial electrical loads, which is great for protecting multiple devices or critical equipment. The runtime at full load is relatively short—about 4.4 minutes—so this UPS is ideal for short power interruptions or allowing safe shutdown rather than extended backup use.

Its sealed lead-acid battery type is common and user-replaceable, but these batteries typically require replacement every few years and add weight, as reflected in its 123-pound mass. On the connectivity side, it offers a decent range of outlets including two heavy-duty NEMA outlets and four standard ones, catering to a variety of devices. Surge protection and filtering are built-in, helping prevent damage from power spikes. The unit's charging time is fairly quick at 2.5 hours, which is helpful for readiness between outages.

This UPS is a solid choice for those needing a powerful, rackmount solution with reliable basic features, but it may not suit users needing longer runtimes or more modern battery technology.

The APC Smart-UPS 3000VA Lithium Ion is a strong choice for anyone needing reliable rackmount UPS power protection, especially in small to medium data centers or critical IT setups. It delivers a solid 3000VA / 2700W capacity, which means it can handle quite a few devices at once without struggling. The 2U short-depth form factor makes it suitable for racks where space is limited. Its lithium-ion battery is a big plus—it tends to last longer and be lighter than traditional batteries, plus it reduces maintenance and replacement frequency.

The UPS provides 10 outlets (eight standard 15A and two 20A), which covers a variety of equipment connections. The pure sine wave output ensures clean and stable power, ideal for sensitive electronics. The built-in LCD console makes it easy to monitor the UPS status, and the included Network Management card along with APC’s SmartConnect service allows for convenient remote monitoring and alerts, which is helpful for managing uptime without being physically present.

This unit is feature-rich but comes with a relatively high weight (around 78 pounds), which might make installation a bit challenging, especially for those handling it alone. Additionally, the SmartConnect service is free for only six months after purchase, so ongoing remote support might require a subscription. This UPS is well-suited for users looking for a robust, easy-to-manage rackmount solution with modern battery technology and network features, though its size and potential ongoing costs for remote services should be considered.

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.