What Do I Do When My Lorex NVR Hard Drive Is Full?

Problem Description

Your Lorex NVR's hard drive is full, and you're unsure whether it will keep recording or whether you're losing footage. On a properly configured NVR, a full drive should auto-overwrite the oldest recordings and keep going - so if recording has stopped, overwrite is likely disabled. This guide covers enabling overwrite, understanding retention, and adding storage if you need to keep footage longer.

Why This Happens in Real Homes

A full NVR hard drive is usually a non-event, because surveillance recorders are designed to run in a loop: when the drive fills, auto-overwrite recycles the oldest footage to make room for new recordings, so the system keeps recording indefinitely and you always have the most recent history. If your NVR stopped recording when it filled up, the fix is simply enabling auto-overwrite - it's the intended behavior and is on by default on most systems, but it can get switched off. Once it's on, 'drive full' is just the normal steady state.

The real question a full drive raises is retention: how far back can you actually see? That's a function of capacity versus how much you're recording. Continuous 24/7 recording on many high-resolution cameras eats space fast, so if your history is shorter than you'd like, you have levers: switch lower-priority cameras to motion-only recording, reduce their resolution or bitrate, or add a larger surveillance-grade drive to extend how many days you retain. Match your expectations to capacity - a small drive with eight 4K cameras recording continuously simply can't hold weeks of footage. For anything you must keep permanently, archive it to USB or cloud before overwrite recycles it, since overwrite makes retention a rolling window, not permanent storage.

Symptoms

• NVR reports the hard drive is full
• Recording stopped once the drive filled
• Oldest footage disappearing (with overwrite on)
• Not enough retention for your needs
• Full-drive warning on screen
• Footage overwritten sooner than expected
• Want longer recording history
• Unsure if new events are still being saved

Recognize these? Here's what usually causes it.

Common Causes

• Auto-overwrite disabled, so recording stops when full
• Drive capacity too small for the number of cameras/resolution
• Continuous 24/7 recording filling the drive fast
• High resolution/bitrate consuming space quickly
• Too many cameras for the retention wanted
• Recording everything instead of motion-only
• No secondary/expanded storage
• Retention expectations exceeding capacity

Tools & Requirements

Step-by-Step Solution

1

Check current storage usage

On the NVR, go to Main Menu > Storage > HDD Manager. The screen shows total capacity, used space, and the percentage full. A 2TB drive recording 8 cameras at 4K continuously fills in about 7-10 days. A 4TB drive gives 14-20 days. When full, the NVR either stops recording or overwrites old footage depending on your settings.

2

Enable auto-overwrite to prevent recording stops

Go to Main Menu > Storage > General (or Record > General). Set HDD Full to Overwrite (Auto). This tells the NVR to delete the oldest recordings when the drive fills up, so recording never stops. Without overwrite, the NVR stops recording when the drive is full — you lose new footage while old footage sits untouched. Most security setups should always have overwrite enabled.

3

Switch to motion-only recording to extend storage

Continuous 24/7 recording fills drives fast. Switch some or all cameras to motion-only recording. Go to Main Menu > Storage > Schedule. For each camera, change from Continuous to Motion recording. Motion-only recording stores footage only when the camera detects movement — typically reducing storage usage by 70-90% compared to continuous recording. For cameras monitoring low-traffic areas (backyard, side yard), motion recording is usually sufficient.

4

Reduce resolution and bitrate for less critical cameras

Not every camera needs 4K recording. Go to Main Menu > Camera > Encode. For cameras monitoring secondary areas, reduce resolution from 4K to 1080p and lower the bitrate from 8000 kbps to 2000-4000 kbps. This reduces the storage per camera by 60-75%. Keep 4K for high-priority cameras (front door, driveway where license plates matter) and use lower resolution for supplementary coverage.

5

Upgrade to a larger hard drive

If you need longer retention with high-quality recording, install a larger hard drive. Lorex NVRs support drives up to 8TB or 16TB. Power off the NVR, swap the drive (standard 3.5-inch SATA), and initialize the new drive in the NVR menu. Use surveillance-rated drives (WD Purple or Seagate SkyHawk) — standard desktop drives are not designed for 24/7 continuous write operations and will fail sooner. A WD Purple 8TB drive costs approximately $150-200 and provides roughly 30-40 days of 8-camera 4K continuous recording.

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Quick Solutions

Still having issues? This is usually the deeper cause below.

Need More Help? Lorex Support

Note: The contact information below connects you directly to Lorex's official customer support team, not Trunetto. They can help with warranty claims, device replacements, and advanced technical issues.