WD 4TB My Book Thunderbolt Duo External Desktop Hard Drive

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Quoting product code: A59QB


About this product


Product overview

• 4TB desktop hard drive gives you a huge storage capacity for all your documents, pictures and videos
• Thunderbolt (Gen1) connections can transfer up to two times faster than USB 3.0, while the drive spins at 7,200rpm
• Perfect for storing all your valuable documents and pictures as a backup
• Daisy chain devices such as HD monitors and media plays through the dual Thunderbolt ports for nearly unlimited efficiency
• RAID 0/RAID 1 functions allow you to either enhance your system’s performance or automatically generate a duplicate copy of your data
• JBOD mode allows you to use the hard drive as two individual 2TB drives

What can I store on this hard drive?
This hard drive has 4TB (4,000GB) of storage, so you have plenty of space for your files. You can store up to 31 hours of 4K video at 30 fps, 132 hours of 1080p video at 30 fps, 1,000 two-hour DVD films, 1.28 million digital photos or 66,400 hours of digital music.

What makes this hard drive different?
The My Book Duo from WD comes as two 2TB hard drives that give you a total of 4TB of storage. The built-in RAID software allows you to change the function of what the hard drive can do, meaning you can make your hard drive perform in the best way for you. By choosing RAID 0 you can boost the speed and enhance your system performance and by choosing RAID 1 the hard drive will automatically generate a duplicate copy of your data. This ensures you will always have a spare copy if your original was corrupted along the way. By selecting JBOD mode (Just a Bunch of Disks), you can use the system as two individual drives and save to the two 2TB drives separately.

Does this only come as a Thunderbolt connection?
This particular model comes with the Thunderbolt connection. The speed of this connection is twice as fast as USB 3.0 and more than 20 times as fast as USB 2.0. That being said, this hard drive is only compatible with Mac based computers. However, the dual Thunderbolt ports allow you to daisy-chain your other Thunderbolt devices, such as HD monitors and media players, for almost unlimited workflow efficiency and productivity.



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Product Specifications

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Drive Form Factor:

3.5 inch

What is the data transfer rate of this drive when connected to a Mac with Thunderbolt Gen 1 connector?

Asked by: djt57
The only information provided by WD can be found in the manual under our download tab but I believe this is a theoretical maximum, not actual performance. Thunderbolt Ports: As shown in Figure 2 on page 3, the My Book Thunderbolt Duo dual-drive storage device has two dual-channel Thunderbolt ports that provide a fast, flexible interface for: • Performance—Thunderbolt technology delivers unprecedented data transfer rates thanks to its revolutionary bidirectional I/O throughput. Each Thunderbolt port provides two bidirectional channels, each with theoretically up to 10 Gb/s of bandwidth.
Answered by: Dominic
Date published: 2017-06-28

Can I use this in JBOD mode to back up using time machine to one disk while using the other as an external hard drive

Asked by: Stortford
I am sorry but the item in question does not support use in your intended application.
Answered by: Les
Date published: 2016-10-03

I intend to use this to extend the storage capacity of my Mac. Is it okay to leave the drive switched on at all times?

Asked by: ManagerPete
Yes this would be fine.
Answered by: Dominic
Date published: 2016-03-09

can it be set to act as a single 4tb drive to act as media server for iMac

Asked by: BigEric
Yes, the drives are in RAID so would appear as 1 drive to the Imac.
Answered by: Russell
Date published: 2015-07-17
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