NVR & Local Storage Calculator

Plan the drive you need, or check how long a drive will record — for eufy PoE NVR, HomeBase, or any brand.

Plan storageI know my cameras → find the drive
Recording timeI know my drive → how long it records
eufy PoE NVR S4Wired, 24/7
eufy HomeBase 3Battery, event-based
Generic NVRAny brand
eufy cameraSets resolution & recording profile
ResolutionDrives the video bitrate
Number of cameras
Recording hours / day24 = round-the-clock
Motion events / day / camera
Avg clip length (seconds)
Retention daysHow long to keep footage
Codec
Bitrate (Mbps)per cam
Drive size to use (TB)
One HomeBase 3 supports up to 16 cameras, but it can decode only 4×4K live streams at once — extra 4K cameras are auto-downscaled for live view.
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Total storage needed for the period above
Recommended drive
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Drives needed
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Total drive size (TB)The disk inside your NVR
Your eufy PoE cameras
Camera
Resolution
Qty
Recording mode
Motion events / day / cam
Clip length (sec)
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How long this drive keeps recording before it overwrites
Storage used / day
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Total record bitrate
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