|Screen Size||4 inches|
|Hard Drive||3 TB|
|National Stock Number||7025-01-621-3953|
Other Sellers on Amazon
+ Free Shipping
+ Free Shipping
+ Free Shipping
WD Red 3TB NAS Hard Disk Drive - 5400 RPM Class SATA 6 Gb/s 64MB Cache 3.5 Inch - WD30EFRX
|Price:||$109.00 & FREE Shipping. Details|
- Enter your model number to make sure this fits.
- Capacity: 3 TB
- Rotational Speed (RPM): IntelliPower
- Microsoft operating systems prior to Vista, 32-bit operating systems, and Mac systems prior to OSX 10.4 may not support volumes greater than 2TB. To recognize the full capacity of this drive, you may need multiple partitions. Check with the manufacturer to verify your system's compatibility.
- Interface: SATA3
- Data Transfer Rate: 6 Gb/s Buffer to Host (max); 145 MB/s Host to/from drive (typical)
- Form Factor: 3.5 inch
- Read/Write: 4.4 Watts
- Standby: 0.6 Watt
Frequently Bought Together
Customers Who Bought This Item Also Bought
Compare to Similar Items
This item: WD Red 3TB NAS Hard Disk Drive - 5400 RPM Class SATA 6 Gb/s 64MB Cache 3.5 Inch - WD30EFRX
|Shipping||FREE Shipping||FREE Shipping||$6.97||FREE Shipping|
|Hard Disk Size||3 TB||3 TB||3 TB||3 TB|
|Speed||5400 RPM||7200 RPM||7200 RPM||5900 RPM|
|Form Factor||3.5 inch||3.5 inch||3.5 inch||3.5 inch|
|Hardware Interface||sata 6 0 gb||sata 6 0 gb||sata 6 0 gb||sata 6 0 gb|
|Cache Memory Installed||64||64||64||64|
Please help us improve this feature. Tell us what you think of this feature.
From the Manufacturer
What are the benefits of NASware 3.0?
- Gives you an unrivaled NAS experience
- Enhances compatibility
- Improves Reliability
- Optimizes HDD for 24x7 NAS environments
WD Red - NAS Hard Drives
The Right Choice for Network Attached Storage
WD NAS hard drives are the essential solution for NAS applications. These drives are cool and quiet, and offer optimum compatibility in 24x7 NAS systems with up to eight bays.
- Network attached storage hard drives with up to 6TB capacities
- Designed for personal, home, and small business NAS systems up to 8-bays
- NASware 3.0 for optimal performance and compatibility
Experienced in Network Attached Storage
No matter which NAS enclosure you decide to purchase, you can trust that WD Red hard drives will have the most comprehensive compatibility list on the market.
Recommended for up to 8-bay NAS systems
Available in up to 6 TB capacities, WD Red allows for a potential of 48 TB total storage space in an 8-bay NAS system.
NAS for home or small business
WD Red hard drives enable customers to create their own reliable Personal Cloud systems whether it's in the office or at home.
|WD Red||WD Red Pro|
|Application||Up to 8-bay NAS systems||Up to 16-bay NAS systems|
|Ideal For||Personal Home & Small Office NAS||Medium to Large Business NAS|
|Cache||16 MB and 64 MB||64 MB – 128 MB|
|Highest Available Capacity||6TB||6TB|
|Interface||SATA 6 Gb/s||SATA 6 Gb/s|
Top Customer Reviews
I'm going to let the cat out of the bag right here and now. Everyone's home RAID is likely an accident waiting to happen. If you're using regular consumer drives in a large array, there are some very simple (and likely) scenarios that can cause it to completely fail. I'm guilty of operating under this same false hope - I have an 8-drive array of 3TB WD Caviar Greens in a RAID-5. For those uninitiated, RAID-5 is where one drive worth of capacity is volunteered for use as parity data, which is distributed amongst all drives in the array. This trick allows for no data loss in the case where a single drive fails. The RAID controller can simply figure out the missing data by running the extra parity through the same formula that created it. This is called redundancy, but I propose that it's not.
Since I'm also guilty here with my huge array of Caviar Greens, let me also say that every few weeks I have a batch job that reads *all* data from that array. Why on earth would I need to occasionally and repeatedly read 21TB of data from something that should already be super reliable? Here's the failure scenario for what might happen to me if I didn't:
* Array starts off operating as normal, but drive 3 has a bad sector that cropped up a few months back. This has gone unnoticed because the bad sector was part of a rarely accessed file.
* During operation, drive 1 encounters a new bad sector.
* Since drive 1 is a consumer drive it goes into a retry loop, repeatedly attempting to read and correct the bad sector.
* The RAID controller exceeds its timeout threshold waiting on drive 1 and marks it offline.
* Array is now in degraded status with drive 1 marked as failed.
* User replaces drive 1.Read more ›
I just purchased a second drive and did some testing on it while blank and uploaded the results under customer images to the right.
For my home-made FreeNAS (google it!) NAS/Server, I bought 5 WD Red drives from Adorama (purchased through Amazon) and 1 drive directly from Amazon.
The one drive from Amazon came very well packaged, double boxed in what looks like a WD cardboard box with a shock absorbing cradle. Very well packaged for shipment. Honestly, Amazon has been stellar for packaging boxes for shipment.
The 5 hard drives from Adorama came in a big box which 'clunked' when it was tilted. Opening the box revealed some big plastic pillow air strips, and 5 loose smaller boxes. Inside each of the smaller boxes was a few pillows and a factory bagged hard drive. There were not enough pillows in each box to securely cushion the hard drives against rattling around, so there's a high likelihood of damage in shipment. BAD SHIPPERS! NO DONUT!
Anyway, getting on to the performance of the drives... I'm running 6 drives in a ZFS RaidZ2 array. They are all controlled using an IBM M1015 PCIE 8x SATA 3 controller which has been flashed to be an HBA providing JBOD to the ZFS OS. That's a lotta acronyms! The speed of the array is quite fast...Read more ›
Since this hard drive's introduction, users have consistently reported premature failures and data corruption. These complaints were well warranted, for the manufacturer has shorten the life cycle of this computer component by design.
The source of the problem is Western Digital's attempt to make the device "more green" - use less electricity. One way to accomplish this goal is to park the heads on a plastic pad after eight seconds of no read/write requests instead of allowing them to float over the spinning platters of the hard drive. This adds up to 10,800 cycles each day. The numerous scrapings gradually wears out the heads. According to some literature, 250,000 to 1,250,000 cycles will result in damage that will lead to read/write errors. If you do the math, data corruption will begin within 23.148 to 115.741 days if you are employing the hard drive on a heavily used server. Regular consumers will not notice read/write problems until later. Some WD drives reported 3,000 to 5,000 cycles per day. At this rate, the first instances of data corruption will begin within 83.33 to 250 days.
From my experience, early data loss will not be noticed by the average user. There are no signs of trouble if work files are not accessed, edited, and save. With numerous usages, lost sectors on the hard drive appear and indexes become corrupted. Then, damages become apparent. During bootup, Windows OS will begin employing Check Disk (chkdsk/f) to repair errors. Chunks of bad information get deleted and corrupted indexes are re-corrected during the process. Eventually, 50%-to-60% drive gets wiped out before the user realizes the problem.Read more ›
We appreciate your time and input. The Red Pro drive is designed and intended for use in 1-16 Bay NAS enclosures with RAID. Please follow the links below for more information regarding to idle time and the S.M.A.R.T. attribute Load Counter along with our list of tested and supported enclosures.
"The S.M.A.R.T Attribute 193 Load/Unload counter keeps increasing on a SATA 2 hard drive": http://support.wdc.com/KnowledgeBase/answ
"WD Red Supported NAS enclosures": http://www.wdc.com/en/products/products.a
Please know the WD Red Pro includes firmware which directly addresses load cycles. The WD Red 3.5 and 2.5 inch models along with our RE family of drives support our idle3 software to increase idle time from 8 seconds to 5 minutes with Load/Unload Utility below.
"WD Red SMART load/Unload utility 3.5" Drive": http://support.wdc.com/product.aspx?ID=61
"WD Red SMART load/Unload utility 2.5" Drive": http://support.wdc.com/product.aspx?ID=70
We would appreciate you contact us directly by phone or Email below. Please mention this Amazon review as a point of reference so we can collect more information in order to fully address your concerns.
Need Help? Please follow the link below for further assistance or contact us at 1(855) 559-3733.
Most Recent Customer Reviews
This weighs as much as I would want it to when spending this kind of dough on it - lets hope it is not just lead inside of it to make me feel that way. Read morePublished 2 hours ago by Brett2
The drive worked great until a month after I installed it. The drive failed and started an electrical fire in my NAS. The fire destroyed the drive and all surrounding cables. Read morePublished 6 hours ago by Ghosty
These drive has worked good. I use it in disk station array. I buy for reliability.Published 10 hours ago by TJW
I buy about four or five of these per year, since I have triple redundancy of my work. I can always count of these. Read morePublished 1 day ago by Rhee Bevere
I have been running this drive for about a year in a Synology NAS in RAID 1. Absolutely no problems at all. Read morePublished 1 day ago by Paul N. Maghielse
I am alway a WD red drive fan. First of all , the drive works fine. But the noise level is too high. It has much noticeable noise than red drive 6TB and 3TB red. Read more
These drives just run and run and run. Nice and quiet, no errors in a year now.Published 3 days ago by P. Wright
I bought two of these and use them combined as a RAID drive for video editing on an older Mac Pro. I am very happy with their performance. Read morePublished 3 days ago by Amazon Customer