The 6TB Red Plus 5400 rpm SATA III 3.5" Internal NAS HDD from WD is built to handle the workloads of RAID-optimized NAS systems with up to 8 drive bays, including home offices and power users, small to medium businesses, and consumer and commercial NAS systems. This 6TB drive operates using a SATA III 6 Gb/s interface, a 256MB cache, and a rotational speed of 5400 rpm, which all help to ensure uninterrupted data transfers with a rate of up to 180 MB/s. This drive also features high levels of reliability, with 600,000 load/unload cycles, < 1 in 10¹⁴ non-recoverable read errors per bits read, a workload rate of 180TB per year, dual-plane balance control technology, and a 1 million hours MTBF. WD's NASware helps increase system compatibility, allowing Red Pro drives to be more easily integrated with your existing network infrastructure, while noise and vibration protection is provided by Rotation Vibration (RV) sensors.

24TB Storage Capacity (4 x 6TB)    3.5" Form Factor    SATA III 6 Gb/s Interface    256MB Cache    5400 rpm    Data Transfer Speeds up to 180 MB/s    600,000 Load/Unload Cycles    1 Million Hours MTBF    Dual-Plane Balance Control    Noise and Vibration Protection

• 6TB storage capacity
• For RAID-optimized NAS systems with up to 8 bays
• Workload rating of up 180TB per year and 1 million hours MTBF

• Home offices and power users
• Small to medium businesses
• Commercial and consumer NAS systems

Western Digital's exclusive NASware technology fine tunes drive parameters to match NAS system workloads, which helps increase performance and reliability.

Since your NAS system is always on, a reliable drive is essential. WD Red Plus hard drives are designed for systems that operate 24/7, giving users the confidence of knowing they can reliably access their data.

Western Digital partners with a wide range of NAS system vendors for extensive testing to ensure compatibility with most NAS enclosures.

WD Red Plus drives are engineered to use less power (versus previous models) and run cooler, which reduces operating costs and helps reduce heat in thermally challenged NAS boxes.

Despite using less power, the drives have plenty of bandwidth to handle the mixed performance demands of multi-drive NAS systems.

Hard drives that are not properly balanced may cause excessive vibration and noise in multi-drive systems, which could reduce hard drive life span and degrade the performance over time. WD's enhanced dual-plane balance control technology significantly improves balance and increases overall drive performance and reliability.

Western Digital stands behind their NAS storage solutions with the assurance of a limited 3-year limited warranty and world-class support services for hassle-free data storage.

Related Questions and Answers

Q: 1. Is this the CMR drive (WD40EFRX) in the box or the SMR drive (WD40EFAX) in the box? Review here says SMR drive but based on google search of the model number listed supposed to be the CMR drive. Thanks !!!

A: This drive is SMR. The Ultrastar line are all CMR. https://www.bhphotovideo.com/c/product/1463047-REG/wd_wdbbur0040bnc_wrsn_ultrastar_4tb_3_5_drive.html

Q: 2. Do these drives have NASware 3.0 Technology?

A: Yes, on the upper right of the label on the HDD there is text NASware 3.0

Q: 3. How are the 10tb reds noise wise? are they load?

A: I have 4 of them in a NAS. When spinning, each one is a little more audible than an old Seagate Barracuda 4TB drive in same NAS. Also, one out of the 4 Red 10TB drives hums much much louder than the whole rest of the NAS, so your mileage may vary... a lot.

Q: 4. Has anyone used this in a Synology DS412+ ? Thanks

A: Great, Thanks for the info.

Q: 5. The product model selection and display image show 256mb cache but the product description itself shows 64mb. I'm assuming the former is correct?

A: This product has 256MB of cache.

Q: 6. What is the spin rate (RPM?)

A: This is a 5400RPM HDD.

Q: 7. Will this work with Thunder3 RAID Station from AKiTiO ?

A: Yes, the WD 4TB Red B&H # WEWD40EFR is compatible with the Akitio Thunder3 Raid Station.

Q: 8. Is this hard drive compatible with the iMac 24 inch early 2009 model?

A: Yes it is compatible.

Q: 9. Where do i find warranty information for drives? Trying to decide which ones to get.

A: The warranty would be listed in the in the box tab on the product page. This would come with a Limited 3-Year Manufacturer Warranty.

Q: 10. Does it work in the Synology DS1819+?

A: Yes, this would be compatible with DS1819+.