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Seagate 4TB SATA HDD front and side view
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Storage›4TB

Seagate 4TB - HDD 3.5" SATA Hard Drives - Ideal for 24/7 continuous recording

SKU: HDD-4TB-SEAGATE-3.5-R
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Bought with a recorder: this hard drive is only sold as part of an order that includes a DVR or NVR, which is why checkout looks for one in the same basket. In practice you can add a recorder now, or buy one of the recorder bundles, which come with the drive already included. Where the drive is meant for a recorder you own already, the route is a pricing request sent from your basket.

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Product Description

The Seagate ST4000NM0033 is a 4TB 3.5" SATA III hard drive built for continuous DVR/NVR recording, not just occasional desktop use. That distinction matters when specifying storage for a retail, warehouse or office CCTV install where the recorder runs 24/7.

Why it suits CCTV deployments

Surveillance recording is a sustained, sequential write workload — very different from the burst read/write pattern of a general PC drive. This drive's 7200 RPM spindle speed and 128MB cache keep write performance consistent under that kind of continuous load, and the SATA III interface (up to 600MB/s) means it won't bottleneck multi-channel systems writing several camera streams at once.

Compatibility

It's compatible with all DVR and NVR surveillance systems, so it drops into most existing kits without a system change. It also works in desktops, servers, NAS devices and external enclosures, which is useful if a site keeps a spare drive for swapping between the recorder and a backup enclosure.

Grading and installation

Drives are supplied Refurbished to Grade A standard and fully tested before dispatch. On CCTV kit or package orders, the drive arrives fully installed and ready to go — no separate fitting into the recorder needed on site.

Key specs

  • Capacity: 4TB
  • Form factor: 3.5" SATA
  • Speed: 7200 RPM
  • Cache: 128MB
  • Interface: SATA III, up to 600MB/s transfer
  • Condition: Refurbished Grade A, fully tested

Specifications

Capacity
4TB
Speed
7200 RPM
Form Factor
3.5 Inch
Interface
SATA 6Gb/s (SATA III)
Cache
128 MB
Data Transfer Rate
Up to 600 MB/s (SATA III)
Average Seek Time
< 8.5 ms (typical)
Acoustics
38 dBA
Height
26.1 mm (1.03 in)
Width
101.6 mm (5.79 in)
Depth
146.9 mm (5.79 in)
Target Use
Enterprise data storage, bulk data applications
Brand
Seagate

Technical Specifications

Manufacturer part numberST4000NM0033
Also listed asGR-HDD-4TB-SEAGATE-3.5-R-FA · GR-HDD-4TB-SEAGATE-3.5-R-LN
SKUHDD-4TB-SEAGATE-3.5-R

Frequently Asked Questions

Is this drive suitable for continuous 24/7 CCTV recording?

Yes, it's specified as ideal for 24/7 continuous recording and data storage, with a 7200 RPM speed and 128MB cache to sustain steady write performance.

Will this work with the DVR or NVR I already have?

It's listed as compatible with all DVR and NVR surveillance systems, as well as desktops, servers, NAS devices and external enclosures.

What condition is the drive supplied in?

Each unit is restored to Grade A condition and fully checked before it leaves us.

Does it come pre-installed if ordered with a CCTV kit?

When bought with a CCTV kit or package, the drive is fully installed and ready to go before dispatch.

Reviews from customers

There are no reviews of Seagate 4TB - HDD 3.5" SATA Hard Drives - Ideal for 24/7 continuous recording yet. Only customers who have bought the item can review it, and the reason is practical: we ask for a review only after an order has been dispatched, which means every rating you see comes from a verified purchase.