18TB Hard Drives for Sale – CCTV and NAS Storage
3 products · prices include VAT
Pick the capacity by how many days of footage you want to keep, then check the drive is rated to run around the clock — an ordinary desktop drive is not built for that.
3 products
This range covers three 18TB internal hard drives in the 3.5" SATA (Serial ATA) format. They suit recorders and NAS (network attached storage) units that hold CCTV footage.
- Toshiba MG Series 18TB Enterprise, 7200RPM
- Toshiba N300 18TB NAS, 7200RPM
- Western Digital WD180EMFZ 18TB, 5400RPM
How to choose
Drive class. The MG Series is listed as an enterprise drive. The N300 is listed as a NAS drive. Match the class to the device it will sit in.
Spindle speed. RPM means revolutions per minute. Two drives here run at 7200RPM and one at 5400RPM. Faster platters generally read and write more quickly. Slower ones are often chosen where lower heat or noise matters, but that depends on the model.
What else you need.
- A 3.5" SATA bay in your recorder or NAS.
- Confirmation that the recorder accepts 18TB drives. Some older units cap the drive size.
- Enough bays if you plan to use several drives.
Check your recorder's manual for its maximum capacity per drive before you order.
18TB — frequently asked questions
Will an 18TB drive work in my CCTV recorder?
It needs a 3.5" SATA bay, and the recorder must support drives of that size. Check its maximum supported capacity in the manual.
What is the difference between 7200RPM and 5400RPM?
RPM is how fast the platters spin. Two drives in this range are 7200RPM and one is 5400RPM.
Which drives here are made for NAS use?
The Toshiba N300 is listed as a NAS hard drive. The Toshiba MG Series is listed as an enterprise drive.
Related guides
- How Much Storage Do I Need for CCTV? UK Guide 2026Each camera needs roughly its bitrate in Mbps × 10.8 GB per day of continuous recording.
- Best NVR Recorder UK 2026: Size, Storage and PoE GuideThe best NVR recorder is the one whose channel count, total bitrate ceiling and drive bays cover your cameras and your retention period with room to spare, so…