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A NAS mid-write during a power cut is one of the more reliable ways to end up with a corrupted filesystem or a degraded RAID array – not because the drives failed, but because power dropped at the worst possible moment. A UPS doesn’t need to run your whole rack for hours; it just needs enough runtime to either ride out a short blip or trigger a clean, automatic shutdown before the battery runs out. Here are three options across the range most home labs actually need.
Higher Capacity: Best for a NAS Plus Networking Gear
If a UPS needs to cover a NAS, a switch, and a router together, capacity matters more than anything else – more connected load means less runtime per outlet.
- Up to 68 minutes of runtime at a 100W load – enough to cover a NAS, switch, and router through most outages
- 10 outlets total: 5 battery-backed plus 5 surge-only, with coaxial and Ethernet surge protection built in
- Automatic Voltage Regulation corrects brownouts and minor surges without draining the battery
Compact: Best for a Single NAS or Router
Not every setup needs a full rack’s worth of backup power. For a single NAS, modem, and router, a smaller UPS is cheaper and takes up a fraction of the desk or shelf space.
- 23 minutes of runtime at 100W – enough to maintain internet connectivity through a short outage or trigger a safe shutdown
- 5 battery-backed outlets plus 2 surge-only outlets for less critical peripherals
- Built-in USB port keeps a phone charged during longer outages
Lithium Battery: Best for Longevity
Standard UPS units use lead-acid batteries that typically need replacing every 3–5 years. A LiFePO4 (lithium iron phosphate) UPS costs more upfront but lasts significantly longer, which matters for a device meant to sit untouched in a closet for years.
- LiFePO4 battery rated for 10+ years and 3,000+ charge cycles – well beyond a typical lead-acid UPS battery’s lifespan
- Communication port for automatic, safe shutdown signaling to a connected NAS or PC
- Compact and wall-mountable, with USB-C and USB-A charging ports built in
The Feature That Actually Matters Most
Runtime is useful, but the feature worth prioritizing is automatic shutdown signaling – most NAS platforms (Synology, QNAP, TrueNAS) support USB or network-based communication with a UPS to trigger a clean shutdown before the battery dies. A UPS with a longer runtime but no shutdown integration is less useful than a smaller one that reliably tells your NAS to power down safely.
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