WD Red Plus NAS Hard Drive WD40EFRX - hard drive - 4 TB - SATA 6Gb/s
Mfg # WD40EFRX
CDW # 3123305
Quick tech specs
- Hard drive
- internal
- SATA 6Gb/s
- for My Cloud EX2; EX4
- 4 TB
- 3.5"
- buffer: 64 MB
Know your gear
Tackle Intensity with WD Red Plus
Packed with power to handle the small- to medium-sized business NAS environments and increased workloads for SOHO customers, WD Red Plus is ideal for archiving and sharing, as well as RAID array rebuilding
on systems using ZFS and other file systems. Built and tested for up to 8-bay NAS systems, these drives give you the flexibility, versatility, and confidence in storing and sharing your precious home and work files.
For Small or Medium Businesses
Stream, backup, share, and organize your digital content with a NAS and WD Red Plus drives designed to effortlessly share content with the devices at your home or business. NASware 3.0 technology increases your drives'
compatibility with your existing network and devices. For larger businesses with up to 24 bays, count on WD Red Pro drives to deliver exceptional performance.
Exclusive NASware 3.0
Not just any drive will do. Get up to 112TB of capacity in your 8-bay NAS system and with Western Digital's exclusive NASware 3.0 technology, you can optimize each and every drive. Built into every WD Red Plus hard drive,
NASware 3.0's advanced technology improves storage performance by increasing compatibility, integration, upgradeability, and reliability.
Built for Optimum NAS Compatibility
WD Red Plus drives with NASware technology takes the guesswork out of selecting a drive. Optimized for NAS systems, our unique algorithm balances performance and reliability in NAS and RAID environments. Simply put,
a WD Red Plus drive is one of the most compatible drives available for NAS enclosures. But don't take our word for it. WD Red Plus drives are a reflection of extensive NAS partner technology engagement and compatibility-testing.
WD Red Pro for Big Business
If you're looking for heavy duty performance for NAS, WD Red Pro drives deliver exceptional performance for the medium to large business customer with extreme demands. For NAS environments with 9 to 24 bays,
WD Red Pro drives deliver uncompromising performance and unwavering assurance backed by a 5-year limited warranty.
3D Active Balance Plus
Our enhanced dual-plane balance control technology significantly improves the overall drive performance and reliability. Hard drives that are not properly balanced may cause excessive vibration and noise
in a multi-drive system, reduce the hard drive life span, and degrade the performance over time.
24/7 Environment
Since your NAS system is always on, a reliable drive is essential. With an MTBF of up to 1 million hours, the WD Red Plus drive is engineered to tackle 24x7 environments.
Premium Support and a 3-year Limited Warranty
Confidently upgrade your NAS performance with the assurance of a 3-year limited warranty, coupled with world-class support services included with every WD Red Plus drive.
Desktop Drives vs. WD Red Plus
Do right by your NAS and choose the drive purpose-built for NAS with an array of features to help preserve your data and maintain optimum performance. Take the following into consideration when choosing a hard drive for your NAS:
Compatibility: Unlike desktop drives, these drives are specifically tested for compatibility with NAS systems for optimum performance.
Reliability: The always-on environment of a NAS or RAID is a hot one, and desktop drives aren't typically designed and tested under those conditions like WD Red Plus drives are.
Error Recovery Controls: WD Red Plus NAS hard drives are specifically designed with RAID error recovery control to help reduce failures within the NAS system.
Noise and Vibration Protection: Designed to operate solo, desktop drives typically offer little or no protection from the noise and vibration present in a multi-drive system. WD Red Plus drives are designed to thrive in multi-bay NAS system environments.
Packed with power to handle the small- to medium-sized business NAS environments and increased workloads for SOHO customers, WD Red Plus is ideal for archiving and sharing, as well as RAID array rebuilding
on systems using ZFS and other file systems. Built and tested for up to 8-bay NAS systems, these drives give you the flexibility, versatility, and confidence in storing and sharing your precious home and work files.
For Small or Medium Businesses
Stream, backup, share, and organize your digital content with a NAS and WD Red Plus drives designed to effortlessly share content with the devices at your home or business. NASware 3.0 technology increases your drives'
compatibility with your existing network and devices. For larger businesses with up to 24 bays, count on WD Red Pro drives to deliver exceptional performance.
Exclusive NASware 3.0
Not just any drive will do. Get up to 112TB of capacity in your 8-bay NAS system and with Western Digital's exclusive NASware 3.0 technology, you can optimize each and every drive. Built into every WD Red Plus hard drive,
NASware 3.0's advanced technology improves storage performance by increasing compatibility, integration, upgradeability, and reliability.
Built for Optimum NAS Compatibility
WD Red Plus drives with NASware technology takes the guesswork out of selecting a drive. Optimized for NAS systems, our unique algorithm balances performance and reliability in NAS and RAID environments. Simply put,
a WD Red Plus drive is one of the most compatible drives available for NAS enclosures. But don't take our word for it. WD Red Plus drives are a reflection of extensive NAS partner technology engagement and compatibility-testing.
WD Red Pro for Big Business
If you're looking for heavy duty performance for NAS, WD Red Pro drives deliver exceptional performance for the medium to large business customer with extreme demands. For NAS environments with 9 to 24 bays,
WD Red Pro drives deliver uncompromising performance and unwavering assurance backed by a 5-year limited warranty.
3D Active Balance Plus
Our enhanced dual-plane balance control technology significantly improves the overall drive performance and reliability. Hard drives that are not properly balanced may cause excessive vibration and noise
in a multi-drive system, reduce the hard drive life span, and degrade the performance over time.
24/7 Environment
Since your NAS system is always on, a reliable drive is essential. With an MTBF of up to 1 million hours, the WD Red Plus drive is engineered to tackle 24x7 environments.
Premium Support and a 3-year Limited Warranty
Confidently upgrade your NAS performance with the assurance of a 3-year limited warranty, coupled with world-class support services included with every WD Red Plus drive.
Desktop Drives vs. WD Red Plus
Do right by your NAS and choose the drive purpose-built for NAS with an array of features to help preserve your data and maintain optimum performance. Take the following into consideration when choosing a hard drive for your NAS:
Compatibility: Unlike desktop drives, these drives are specifically tested for compatibility with NAS systems for optimum performance.
Reliability: The always-on environment of a NAS or RAID is a hot one, and desktop drives aren't typically designed and tested under those conditions like WD Red Plus drives are.
Error Recovery Controls: WD Red Plus NAS hard drives are specifically designed with RAID error recovery control to help reduce failures within the NAS system.
Noise and Vibration Protection: Designed to operate solo, desktop drives typically offer little or no protection from the noise and vibration present in a multi-drive system. WD Red Plus drives are designed to thrive in multi-bay NAS system environments.
Enhance your purchase
WD Red Plus NAS Hard Drive WD40EFRX - hard drive - 4 TB - SATA 6Gb/s is rated
4.82 out of
5 by
17.
Rated 5 out of
5 by
Sr. Engineer from
Surprisingly Good Speed in 4x NAS RAID5 (X-RAID) configuration
My #1 concern when I bought these was making sure my selection was specifically designed for a NAS environment. Reliability and long life being the keys.
I was very skeptical at the 5400RPM figuring it would be terrible performance not even able to soak a 1GbE on write. You know what? It's not terrible at all. One reason is because of them being in RAID5 due to stripe and better write speeds than RAID6.
This is over a 1GbE LAN. For a 10GbE or as an internal drive I can't speak, but I would expect them to fall short on performance in those scenarios.
For read on the LAN they of course soak. However, for 1GbE with my NAS dual bond (LACP) and using jumbo frames I constantly get 100+MB/s write speed to the NAS from my main rig.
This write speed is what surprised me. I expected far less. Note this relates to large files. For thousands of small files it's quite close to this, which was an even larger surprise.
I've yet to have any of the drives fail - they've been installed since [at-least] Thu Jun 4 2015 based on my NAS logs, and spinning 24/7.
In that time they've processed many, many TB of data and there's not a single log entry from any of the drives. Zero. Nada. That is really impressive.
What's not impressive is copying or moving internally where it's copying / moving / deleting files since it's the most extreme random read write trim operations. For these scenarios they can drop in raw throughput substantially. If I were constantly moving folders and files around - inside - the NAS this would be an issue. For my day to day this is simply not a common use case so it's no impact to me at all.
If you need to - constantly - copy and/or move files around - within - the same drive you're likely better off with higher RPM.
For all other scenarios where the content is writing to them or reading from them as the majority work load, and where your max transfer rate is a 1GbE - I can definitely recommend these drives.
Date published: 2017-12-12T00:00:00-05:00
Rated 5 out of
5 by
Mike from
another great WD product
Western Digital drives continue to be very good products.
Date published: 2019-02-21T00:00:00-05:00
Rated 5 out of
5 by
TempestK from
Great value
We replaced some WD Black 2TB drives with these 4TB Red models in our NAS. No performance degradation has been seen.
Date published: 2013-12-04T00:00:00-05:00
Rated 5 out of
5 by
JoeC from
Used with Synology DS1817+
I purchased WD Reds for my DS1817+ due to the price and reliability of these drives. No issues so far!
Date published: 2017-06-01T00:00:00-04:00
Rated 5 out of
5 by
gregp from
Great drives
Nice and not too expensive 4TB drive. Used for QNAP
Date published: 2015-06-03T00:00:00-04:00
Rated 5 out of
5 by
GatorEd from
AWESOME PRODUCT
We have been updating our back up systems and are using these drives in our NAZ Box! Great choice!
Date published: 2015-12-16T00:00:00-05:00
Rated 5 out of
5 by
RH434 from
Good Drives. Time will tell about reliability!
I used 4 of these in a Netgear NAS box for backup purposes, so no live critical data. So far they have been humming along fine with no failures. They seem to be quiet, cool and so far a very reasonable investment.
I prefer to buy drives at CDW vs. the other places due to packaging alone. I have not had a DOA from them yet.
Date published: 2013-11-13T00:00:00-05:00
Rated 5 out of
5 by
KP1123 from
Good reliable drives
I've never had one of these drives fail on me. I most often use them in large RAID configs in our NAS hardware.
Date published: 2016-08-25T00:00:00-04:00
Rated 5 out of
5 by
dwiseman from
Good product.
The hard drive seems to be in good working order and the product in general seems to have a good shelf life.
Date published: 2017-08-10T00:00:00-04:00
Rated 5 out of
5 by
ikoi from
Good drive
Expansive drive, but it worth it.
Great drive. I would recommended.
Date published: 2016-01-13T00:00:00-05:00
Rated 5 out of
5 by
Jeff from
Solid drive for NAS storage
This drive replaced a 1-year-old drive in a RAID NAS box. I hope this one lasts longer than the original. Seems good so far.
Date published: 2017-05-17T00:00:00-04:00
Rated 5 out of
5 by
ricky777 from
Excellent External Drive
Use: Synology RackStations NAS
Excellent Drives
Have been using these drives for awhile now(few years)with no failures to date.
I would definitely recommend these for a NAS.
Thank You
Rick
Date published: 2016-11-17T00:00:00-05:00
Rated 5 out of
5 by
Sputxx from
Best bang for the back
We use these drives to populate our iSCSI servers in a RAID 6 configuration. Quality is consistent and failure rate confirms to posted MTBF. Purchased eight of them recently and no issues.
Date published: 2014-11-12T00:00:00-05:00
Rated 5 out of
5 by
airbarron33 from
This product is a great value
I bought 4 of these to put into a NAS for backup. Installation was a breeze. All 4 worked perfectly and have been reliable. The price is great for 4TB of storage space.
Date published: 2015-01-28T00:00:00-05:00
Rated 5 out of
5 by
mpz9 from
Great Drive for NAS
We use the WD Red drives in all of our NAS deployments. Drives have been extremely reliable.
Date published: 2016-01-27T00:00:00-05:00
Rated 5 out of
5 by
anon727 from
They work like they should
These plug in and worked just fine, no failed drive and no DOA, of course a drive can always fail but these are good
Date published: 2016-02-10T00:00:00-05:00
Rated 5 out of
5 by
Scott from
Very reliable drive
After burning through several different makes and models of drives for our NAS systems, we finally settled on these Red drives, and thus far I have had a zero failure rate.
Date published: 2015-02-11T00:00:00-05:00