Engineered to deliver high performance and reliability to commercial and enterprise NAS environments, the 2TB Red Pro 7200 rpm SATA III 3.5" Internal NAS HDD from WD is well-suited for multimedia and creative pros, medium to large businesses, and commercial and enterprise NAS systems. Able to work in RAID-optimized NAS systems with an unlimited number of drive bays, this 2TB drive operates using a SATA III 6 Gb/s interface, a 64MB cache, and a rotational speed of 7200 rpm, which all help to ensure uninterrupted data transfers with a rate of up to 164 MB/s. This drive also features high levels of reliability, with 600,000 load/unload cycles, < 1 in 10¹⁵ non-recoverable read errors per bits read, a workload rate of 550TB per year, dual-plane balance control technology, and 2 million hours MTBF. Shock protection is provided by a multi-axis shock sensor and WD's NASware helps increase system compatibility, allowing Red Pro drives to be more easily integrated with your existing network infrastructure.

4TB Storage Capacity (2 x 2TB)    3.5" Form Factor    SATA III 6 Gb/s Interface    64MB Cache    7200 rpm    Data Transfer Speeds up to 164 MB/s    600,000 Load/Unload Cycles    2 Million Hours MTBF    Multi-Axis Shock Sensor    NASware Technology

• 2TB storage capacity
• For RAID-optimized NAS systems with an unlimited number of bays
• Workload rating of up 550TB per year and up to a 2 million hours MTBF

• Multimedia creative pros
• Medium to large businesses
• Commercial and enterprise NAS systems

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

WD Red Pro hard drives are designed to handle the rigorous demands of high-intensity 24/7 multi-user NAS environments and increase system durability.

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

WD Red Pro drives include Rotation Vibration (RV) sensors that anticipate and proactively counteract disturbances caused by increased vibration. By dispersing excess vibration across the drive chassis, turbulence is minimized, performance is maintained, and drives are protected.

WD Red Pro hard drives include a multi-axis shock sensor to detect subtle shock events and automatically compensate with dynamic fly height technology to further protect the drives in NAS enclosures.

Western Digital stands behind their NAS storage solutions with the assurance of a limited 5-year limited warranty and world-class support services for hassle free data storage.

Related Questions and Answers

Q: 1. Does it work in the Synology DS1819+?

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

Q: 2. 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: 3. Is this compatible with synology DS115?

A: Yes

Q: 4. I'm buying multiple drives for a NAS. Why is it cheaper to buy 8 of these individually, and more expensive to buy the retail 8 pack?

A: This is an OEM drive which means that there is no manufacturer warranty. From Western Digital's website: OEM drives are sold without accessories or installation software. OEM drives may not contain a warranty from Western Digital. When Western Digital sells hard drives to OEM computer manufacturers such as Dell, Compaq, Apple, etc, we sell these drives without warranty. The OEM computer manufacturer would include the hard drive under the warranty of the computer system that the hard drive was installed into. For more information about hard drive warranties, please see our Warranty Policy. OEM drives do not have support available through Western Digital Customer Service and Support. If this hard drive came in an OEM system, check back with the OEM manufacturer for any support or possible updates. If you purchased this hard drive from a third party vendor, check back with the place of purchase.

Q: 5. What's the difference between the Red, Red Pro, and Retail Kit drives?

A: Red vs Red Pro: Basic diff Cost, RPM, Warranty, and application. Red should be for most home NAS setups with array of drives up to 8. Red Pro is geared more to small business/rack mounts, ect. If your setting up NAS with RAID, speed and Warranty should not be a big issue. prioritize cost and size.

Q: 6. 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: 7. 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: 8. Is this hard drive compatible with the iMac 24 inch early 2009 model?

A: Yes it is compatible.

Q: 9. Is this a Cmr or Smr drive?

A: This 4TB WD hard drive would be CMR.

Q: 10. What is the difference between Red and Retail Kit?

A: Package is diff, HDD itself is the same. (Red in brown box, Retail in printed box)