I test UPS for NAS units to stop array corruption during outages. This guide helps you pick a battery backup that triggers a clean shutdown for your home…

By Evan Holt · Computing editor · Computing desk · Gadget Evaluator Lab

Evan's spec pass. A UPS for NAS prevents file system corruption by keeping power alive until the server completes a graceful shutdown. It protects your array from the data loss caused by sudden power cuts.

Your home server array is vulnerable to corruption if the power drops before the OS finishes writing logs. A UPS for NAS bridges that gap, holding the charge long enough for a clean shutdown sequence to complete without interrupting the disk heads.

Before you open the listing, check the product photo for the specific VA rating and the number of rear outlets. You need to see the connector type clearly to ensure it matches your server's power brick requirements.

01 APC UPS Battery Backup Bundle- (1) 850VA Backup Battery with 2 USB…

Kind	UPS for NAS
Stars	4.7
Price	$217.69
Page	Open the Amazon listing

This bundle pairs an 850VA unit with two USB charging ports and a 600VA supply with one, giving you a tiered power buffer for a primary NAS and a secondary router or switch. The split capacity allows you to prioritize the array's graceful shutdown while keeping network visibility alive during the outage.

Check the photo to confirm the physical outlet layout on both units, as the 600VA unit may have fewer AC sockets than the 850VA model. Verify that the USB port placement matches your cable reach, since a blocked port can prevent the NAS from receiving the shutdown signal in time.

02 CyberPower SL950U Standby UPS Battery Backup and Surge Protector

Kind	UPS for NAS
Stars	4.7
Price	$115.95
Page	Open the Amazon listing

The SL950U is a standby unit designed to bridge the gap between a power cut and your NAS's internal shutdown routine. Its 950VA capacity is sufficient for most single-bay or dual-bay arrays, providing enough runtime for the OS to flush write caches safely.

Look at the image to see if the unit includes a serial or USB cable in the box, as this connection is critical for the automatic shutdown software to communicate with your drive enclosure. If the photo shows a compact form factor, ensure it fits under your desk without blocking the rear ventilation slots.

03 CyberPower BRG1500AVRLCD2 Intelligent LCD UPS Battery Backup

Kind	UPS for NAS
Stars	4.7
Price	$289.95
Page	Open the Amazon listing

This 1500VA model features an intelligent LCD display, which is useful for monitoring battery health and load levels without opening a management interface. The higher VA rating supports larger arrays or additional peripherals like a UPS-protected monitor or router.

In the product photo, verify the position of the LCD screen relative to the outlets. If the display is on the front, you can check the status without moving the unit, but ensure the screen is visible from your typical seating position to catch low-battery warnings early.

04 CyberPower CP2000PFCRM2U PFC Sinewave UPS Battery Backup

Kind	UPS for NAS
Stars	4.7
Price	$449.95
Page	Open the Amazon listing

The CP2000PFCRM2U is a rack-mountable unit with pure sine wave output, which is essential for sensitive NAS hardware that may be sensitive to power quality fluctuations. The 2000VA capacity is robust enough for enterprise-grade arrays or multiple network devices.

Examine the photo to confirm the rack-mount ears are included, as this determines if you can integrate it into a server rack. Check the depth of the unit in the image to ensure it does not protrude too far into the rack space, which could interfere with cable management or airflow.

05 APC BE850G2 UPS Battery Backup & Surge Protector for Computer…

Kind	UPS for NAS
Stars	4.6
Price	$137.70
Page	Open the Amazon listing

The BE850G2 is explicitly listed for computers, routers, and NAS devices, indicating its power curve is tuned for these specific loads. The 850VA capacity is a standard choice for home office arrays that need reliable shutdown protection.

Look at the photo to identify the number of battery-backed outlets versus surge-only outlets. You must plug your NAS into a battery-backed outlet to ensure it receives power during an outage, so confirm the socket labeling is clear in the image.

06 CyberPower AVRG900LCD Intelligent LCD UPS Battery Backup

Kind	UPS for NAS
Stars	4.6
Price	$139.95
Page	Open the Amazon listing

The AVRG900LCD offers 900VA of backup power with an LCD display for real-time monitoring. This capacity is suitable for mid-sized NAS units that require a few minutes of runtime to complete a safe shutdown sequence.

Check the photo to see the placement of the USB and serial ports. If the ports are on the rear, ensure you have enough cable length to reach your NAS, as a short cable can prevent the shutdown signal from being transmitted during a power event.

07 CyberPower PR1500LCD Smart App Sinewave UPS Battery Backup

Kind	UPS for NAS
Stars	4.6
Price	$700.95
Page	Open the Amazon listing

This 1500VA pure sine wave UPS includes a smart app for remote monitoring, which is useful if you want to check your NAS's power status from a mobile device. The higher capacity supports larger arrays or multiple network devices.

In the photo, verify the inclusion of the USB cable and any software installation media. The smart app feature requires a connection, so ensure the photo shows the necessary ports and that the unit's form factor allows for easy cable routing to your NAS.

08 APC 1500VA UPS Battery Backup, Surge Protection – 600VA UPS Power…

Kind	UPS for NAS
Stars	4.6
Price	$269.98
Page	Open the Amazon listing

This bundle includes a 1500VA unit and a 600VA unit with seven outlets and a USB port. The dual-unit setup allows you to distribute the load, with the larger unit handling the NAS and the smaller unit protecting the router or switch.

Look at the photo to confirm the outlet count on the 1500VA unit, as the title mentions seven outlets for the 600VA unit but does not specify for the 1500VA. Ensure you have enough sockets for your NAS, router, and any other critical devices to avoid overloading a single unit.

09 CyberPower GX150C2-E Gaming UPS Battery Backup and Surge Protector

Kind	best UPS for NAS
Stars	4.6
Price	$299.99
Page	Open the Amazon listing

The GX150C2-E is a 1500VA gaming UPS, but its pure sine wave output and capacity make it suitable for NAS protection as well. The higher VA rating provides ample runtime for graceful shutdowns of larger arrays.

Check the photo to see the outlet configuration and any additional features like USB ports. Ensure the unit's design does not have obstructive elements that could block access to the rear ports where the NAS connection cable would be plugged in.

10 APC BE600M1 UPS Battery Backup & Surge Protector for Computer…

Kind	best UPS for NAS
Stars	4.5
Price	$79.99
Page	Open the Amazon listing

The BE600M1 is a 600VA unit designed for computers, routers, and NAS devices. Its lower capacity is best suited for smaller, single-bay NAS units that require minimal runtime for shutdown.

In the photo, verify the number of battery-backed outlets. With only 600VA, you may have limited sockets, so ensure your NAS and router can both be plugged into battery-backed outlets to guarantee power during an outage.