Buy the ARP T-Shirt! BIOS Optimization Guide Money Savers!

 23 December 2014
 Dr. Adrian Wong
 Discuss here !
Desktop Graphics Card Comparison Guide Rev. 33.0
Covering 628 desktop graphics cards, this comprehensive comparison allows you ... Read here
BIOS Option Of The Week - Virtualization Technology
Since 1999, we have been developing the BIOS Optimization Guide, affectionately known... Read here
Buy The BOG Book Subscribe To The BOG! Latest Money Savers!
Western Digital Red Pro (WD4001FFSX) 4 TB Hard Disk Drive Review Rev. 2.0
Digg! Reddit!Add to Reddit | Bookmark this article:

Western Digital Red Pro (WD4001FFSX) 4 TB Hard Disk Drive

The popularity of Network-Attached Storage (NAS) devices is rapidly ramping up in both small businesses and homes, fueled by their usefulness and their increasing affordability. This surge in interest has led Western Digital to add a NAS-specific family of hard disk drives - the WD Red family of NAS hard disk drives.

They have since extended that to a new line of NAS hard disk drives - the Western Digital Red Pro. Targeted at larger NAS systems that support 8-16 drives, the Red Pro drives are a refinement of the work Western Digital had previously done on their Red drives.

Today, we are going to take a look at the top-of-the-line 4 TB Western Digital Red Pro (WD4001FFSX) model. Here are its key features :

  • Exclusive NASware 3.0 Technology
  • Extensive NAS Testing
  • 3D Active Balance Plus
  • Vibration Protection
  • Enhanced Reliability
  • Enhanced Shock Protection
  • Extended Drive Testing
  • Premium Support
  • Longer Warranty Coverage

Now, let's take a closer look at the big daddy of the WD Red Pro family of hard disk drives!

For more details, read our Comprehensive Review!

To discuss about this review, head over to the forum thread!

If you like this article, please share it! ->

Lowest Price


Comprehensive Review


• WD4001FFSX

Formatted Capacity

• 4,000,787 MB

Guaranteed Sectors

• 7,814,037,168

Bytes Per Sector

• 512 bytes (Emulated)


• 5 Platters (800 GB per platter)

Read/Write Heads

• 10 Read/Write Heads

Spindle Speed

• 7,200 RPM



Internal Data Transfer Rate

• 171 MB/s

Average Seek

• NA

Average Latency

• NA

Drive Ready Time

• NA


• Serial ATA 6 Gb/s

Supported SATA Data Transfer Mode

• 6.0 Gbits/s
• 3.0 Gbits/s
• 1.5 Gbits/s

SATA Hotplug Capability

• Yes

Native Command Queuing

• Yes

Advanced Format Technology

• Yes

Maximum Height

• 26.1 mm (1.028 inches)

Maximum Width

• 101.6 mm (4.00 inches)

Maximum Length

• 147.0 mm (5.787 inches)

Maximum Weight

• 750 g (1.66 lbs)

Power Requirements

• +12V DC ± 10 %
• +5V DC ± 5 %

Power Consumption

• 8.6 W (Read / Write)
• 6.5 W (Idle)
• 0.6 W (Standby / Sleep)

Ambient Temperature

• 5 °C to 60 °C (Operating)
• -40 °C to 70 °C (Non-Operating)

Maximum Shock

• 65 G / 30 G @ 2 ms (Read / Write)
• 300 G @ 2 ms (Non-Operating)

Drive Acoustics

• 31 dBA average (Idle Mode)
• 34 dBA average (Quiet Seek Mode)

Non-Recoverable Read Errors

• 1 error per 1015 bits read

Load/Unload Cycles

• 600,000 minimum


• 1 million hours (in a 8-16 bay NAS)


• 5 Years Limited Warranty


Our Review System

Tech ARP is committed to developing new ways to improve your experience with us. As part of our continuous efforts to improve the value of our reviews to you, we are implementing a multi-tier review system.

This review system is designed to allow you to quickly receive information on the latest hardware or software. This new system also allows you to quickly get the gist of the review without reading through it. This can be very useful, especially in situations where you need to make a quick purchase decision.

In this new system, we start with a Product Overview whenever a company sends us a press release about their latest product. We shift through extraneous PR-talk to create a straightforward summary of the product's features as well as specifications. This allows you to quickly find out all the pertinent details about the product, without reading through official press releases.

When we receive the product for review, we will quickly take photos of it and create a Pictorial Review. The purpose of a pictorial review is to allow you, the reader, to quickly examine the product visually. It may help you make better purchase decisions, especially if you cannot wait for the full review.

After thorough testing, we will post a Comprehensive Review of the product. This adds on to the pictorial review with comprehensive test results and our final conclusion on the product.

But no matter whether you are reading a Pictorial Review or a Comprehensive Review, you can always read the summary of the review as well as examine the product's specifications right on the first page. In all our new reviews, we will maintain the first page as a Product Overview page. If the product is listed in PriceGrabber, you can also check out the lowest price online.

We hope this new review system will make your experience a lot more enjoyable and informative!


Support Tech ARP!

If you like our work, you can help support out work by visiting our sponsors, participate in the Tech ARP Forums, or even donate to our fund. Any help you can render is greatly appreciated!

Support us by buying from!

Grab a FREE 30-day trial of Amazon Prime for free shipping, instant access to 40,000 movies and TV episodes and the Kindle Owners' Lending Library!
The Intel Core 2 Duo E6850 Overclocking Report
Intel Centrino Duo & Pro Technology Report
NVIDIA GeForce 7900 GT Graphics Card Review Rev. 2.0
Corsair 2GB XMS-4400PRO DDR Memory Kit Pictorial Review
The 6th NVIDIA Editors' Day
BenQ E520 & E510 Digital Cameras
Intel Mobility Party Report
NVIDIA GeForce 7800 GTX Graphics Card Review
Dell Pocket DJ Review
ARP Christmas Dinner 2004


Copyright © Tech All rights reserved.