---
product_id: 136068324
title: "WD Red Pro 12 TB 3.5 Inch NAS Internal Hard Drive - 7200 RPM - WD121KFBX"
brand: "western digital"
price: "€ 1115.71"
currency: EUR
in_stock: true
reviews_count: 7
category: "Western Digital"
url: https://www.desertcart.com.cy/products/136068324-wd-red-pro-12-tb-3-5-inch-nas-internal
store_origin: CY
region: Cyprus
---

# 12 TB massive storage 7200 RPM high-speed performance 5-year limited warranty & vibration protection WD Red Pro 12 TB 3.5 Inch NAS Internal Hard Drive - 7200 RPM - WD121KFBX

**Brand:** western digital
**Price:** € 1115.71
**Availability:** ✅ In Stock

## Summary

> 🚀 Elevate your NAS game with unstoppable speed and storage!

## Quick Answers

- **What is this?** WD Red Pro 12 TB 3.5 Inch NAS Internal Hard Drive - 7200 RPM - WD121KFBX by western digital
- **How much does it cost?** € 1115.71 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.com.cy](https://www.desertcart.com.cy/products/136068324-wd-red-pro-12-tb-3-5-inch-nas-internal)

## Best For

- western digital enthusiasts

## Why This Product

- Trusted western digital brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **7200 RPM Speed:** Blazing fast data access for seamless multitasking and streaming.
- • **3D Active Balance Plus:** Advanced vibration & shock protection for uninterrupted 24/7 operation.
- • **Massive 12 TB Capacity:** Store your entire digital universe without compromise.
- • **NASware 3.0 Technology:** Optimized for 1-24 bay NAS systems ensuring rock-solid reliability.
- • **5-Year Limited Warranty:** Confidence backed by industry-leading long-term support.

## Overview

The WD Red Pro 12 TB 3.5-inch NAS Internal Hard Drive delivers enterprise-grade performance with 7200 RPM speed, NASware 3.0 technology for enhanced reliability, and 3D Active Balance Plus for vibration protection. Designed for 1-24 bay NAS systems, it offers massive 12 TB capacity and a 5-year limited warranty, making it the go-to choice for professionals demanding continuous, high-capacity storage.

## Description

Buy

Review: Excellent and as described - Excellent and as described
Review: A good reliable drive. - Purchased two of these to use in a Synology NAS system. This is the third pair I have bought. The first 4 drives have been funning 24/7 for 3 years.

## Features

- Available in large capacities with support for 1-24 Bays
- Enhanced reliability with 3D active Balance Plus technology and error recovery controls with NASware 3. 0 technology
- Extended drive testing to ensure each drive is tested for extended reliable operation
- Vibration & shock protection
- 5-Year Limited warranty
- Interface Transfer Rate (max) Internal Transfer Rate : 240 Mega Byte per sencond

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B07RTMPWD8 |
| Are Batteries Included | No |
| Batteries | 1 AAAA batteries required. |
| Best Sellers Rank | 134,318 in Computers & Accessories ( See Top 100 in Computers & Accessories ) 99 in Network Attached Storage (NAS) Devices |
| Brand | Western Digital |
| Colour | Red |
| Customer Reviews | 4.2 4.2 out of 5 stars (472) |
| Date First Available | 29 May 2019 |
| Form Factor | 3.5-inch |
| Guaranteed software updates until | unknown |
| Hard Disk Description | Mechanical Hard Disk |
| Hard Disk Rotational Speed | 7200 RPM |
| Hard Drive Interface | Serial ATA |
| Hard Drive Size | 12 TB |
| Hardware Platform | Mac, PC |
| Item Weight | 660 g |
| Item model number | WD121KFBX |
| Lithium Battery Energy Content | 2.6 Watt Hours |
| Lithium Battery Packaging | Batteries contained in equipment |
| Lithium Battery Weight | 5 Grams |
| Manufacturer | Western Digital |
| Number Of Lithium Ion Cells | 4 |
| Product Dimensions | 14.7 x 10.16 x 2.61 cm; 660 g |
| Series | WD Red Pro |

## Product Details

- **Brand:** Western Digital
- **Colour:** Red
- **Compatible devices:** Laptop, Desktop
- **Connectivity technology:** SATA
- **Digital storage capacity:** 12 TB
- **Hard disk description:** Mechanical Hard Disk
- **Hard disk form factor:** 3.5 Inches
- **Hard disk interface:** Serial ATA
- **Installation type:** Internal Hard Drive
- **Special feature:** [POSSIBLE_VALUES: High Capacity, Fast Rotational Speed, NAS Product Line]

## Images

![WD Red Pro 12 TB 3.5 Inch NAS Internal Hard Drive - 7200 RPM - WD121KFBX - Image 1](https://m.media-amazon.com/images/I/61Q9UzaW0ML.jpg)

## Questions & Answers

**Q: 4 of these drives good for 32tb 24/7 dlna nas server? Don’t want to beat a dead horse here... Really it’s just to stream my 10Bit 4K movies using DLNA**
A: It all depends on what size and what RAID configuration you are asking about.  Most people would be using RAID 5 or something like Synology's SHR (similar to RAID 5 but doesn't require equal size hard drives) for this purpose. If you are thinking that 4x8TB will give you 32TB of storage that is not correct in RAID 5 because of the overhead used for data protection.  It works like this for RAID 5, 4x8TB = 24TB storage, 4x10TB = 30TB storage, 4x12 = 36TB storage.  So first determine which RAID configuration works best for you and then find a RAID calculator available online to choose your RAID configuration and hard drive size.  If you just want speed, with no parity checking then you could go with 4x8TB or 2x16 TB (whichever is cheaper) in RAID 0 for 32TB of storage but file corruption could be an issue and there is a possibility that you can only do 2 hard drives in RAID depending on your hardware.
Having said all that, these drives will certainly stream 4k 10-bit HDR movies over DLNA.  Streaming 4k is just as much up to the software and hardware of your computer than it is the hard drives.  A nicely configured Windows machine, for example, may stream them fine however a less powerful NAS device may not.  There are a lot of moving parts but these drives will not be an issue.  There are also issues with playing the 265 codecs in Windows 10 Media Player but the same files that will not play in Media Player, will stream via DLNA to my LG TV just fine and play in full 2160p HDR with no problem.  These same files will show up fine in my 9 year old NAS but will not stream via DLNA on it but photos stream fine.  So it all depends on your exact configuration.  But the drives are fine.
If it all gets too hard then just get a fast (say 400 MB per second) USB stick and copy 10 movies at a time on to it and plug it into your TV.  The Samsung BAR Plus 256 GB works well for this in my experience.  You can also look into getting streaming server software on your computer and a client connected to your TV.

**Q: What is the difference between this and the WD Black drive?**
A: The Red is engineered for 24/7 usage.  The Black is not.

**Q: Is the red wd drives better for cctv/nvr in raid setup than the purple drives? i hear purple drives are not lasting long. both red and purple are 24/7**
A: I use my purple drives with 9 cameras 24 x 7 and have over three years without a single failure.  pretty good if you ask me.

**Q: Can I use this as an external storage for my desktop?**
A: I have four of the earlier 3tB versions of this drive in external USB3 enclosures and use them in rotation for critical full system backups. They have served very well in that capacity. I also have one of the 3tB drives in my main daily-driver computer now and it does that quite well although it isn't as fast as some but since it is used mostly for secondary data store it doesn't matter so much. The reason that I have so many of the older 3tB drives is that I upgraded all of the drives in my Drobo NAS to 6tB drives a while back. Those drives as well as five of the 8tB units in another NAS have worked perfectly so I can highly recommend them (for the proper use, of course).

## Customer Reviews

### ⭐⭐⭐⭐⭐ Excellent and as described
*by B***T on 16 January 2026*

Excellent and as described

### ⭐⭐⭐⭐⭐ A good reliable drive.
*by R***W on 6 August 2021*

Purchased two of these to use in a Synology NAS system. This is the third pair I have bought. The first 4 drives have been funning 24/7 for 3 years.

### ⭐⭐⭐⭐⭐ Review
*by J***K on 2 December 2023*

I bought this on Amazon. I'm upgrading my NAS from 6 to 10Tb. I don't think I'll ever need more. I have had no/zero problems with WD products. Pro is better than plus if only for the warranty (5 vs 3 years) and my Tb WD Red drives are past their prime and testing great. As for the purchase, its a good price but saving 32%? No. the Drive is 269 list. On this, the first of December 2023, its 239 at WD, shipped. I still go to Amazon first. They've got great prices, but sometimes the List is a bit "enhanced".

## Frequently Bought Together

- Western Digital 12TB WD Red Pro NAS Internal Hard Drive HDD - 7200 RPM, SATA 6 Gb/s, CMR, 256 MB Cache, 3.5" - WD121KFBX
- Synology 2-Bay DiskStation DS224+ (Diskless)

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*Product available on Desertcart Cyprus*
*Store origin: CY*
*Last updated: 2026-03-01*