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HGST - WD Ultrastar DC HC520 HDD | HUH721212ALE600 | 12TB 7.2K SATA 6Gb/s 256MB Cache 3.5-Inch Helium Data Center Internal Hard Disk Drive

4.0 4.0 out of 5 stars 141 ratings
$261.45
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Purchase options and add-ons

Digital Storage Capacity 12000 GB
Hard Disk Interface SATA 6 GB/s
Connectivity Technology SATA
Brand HGST
Special Feature Portable
Hard Disk Form Factor 3.5 Inches
Hard Disk Description Mechanical Hard Disk
Compatible Devices Desktop
Installation Type Internal Hard Drive
Hard Disk Size 12 TB

About this item

  • Instant secure erase (ISE), endurance optimized with field-proven helium design
  • Dual safe firmware for reliable updates, 2.5M MTBF, power efficient with low idle W/TB than air-filled drives
  • High capacity storage for big data storage applications, perfect for cloud and hyperscale storage that need durability and security
  • Optimal for high-density data centers and centralized video surveillance for reliability, capacity density, and power efficiency
  • 12TB of storage capacity, SATA III interface, 256MB buffer, 7200 RPM spindle rotational speed
  • Up to 2.5M hours MTBF with a 5 year limited OEM warrant direct with Authorized Reseller

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HGST - WD Ultrastar DC HC520 HDD | HUH721212ALE601 | 12TB 7200RPM SATA 6Gb/s 256MB Cache 3.5-Inch | ISE 512e | Helium Data Center Internal Hard Disk Drive (Renewed)
HGST - WD Ultrastar DC HC520 HDD | HUH721212ALE601 | 12TB 7200RPM SATA 6Gb/s 256MB Cache 3.5-Inch | ISE 512e | Helium Data Center Internal Hard Disk Drive (Renewed) $102.95 & FREE Shipping
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Price$264.99-15% $127.68
List Price: $149.99		$173.05-41% $173.99
New Price: $294.99		$109.99$95.88
Delivery
Get it May 9 - 14
—
Get it May 9 - 13
Get it as soon as Tomorrow, May 7
Get it as soon as Sunday, May 12
Get it as soon as Sunday, May 12
Customer Ratings
4.04.0 out of 5 stars141
4.24.2 out of 5 stars519
5.05.0 out of 5 stars5
4.44.4 out of 5 stars129
4.54.5 out of 5 stars51
4.34.3 out of 5 stars19
Noise level
4.1
3.8
—
3.7
3.9
—
Value for money
3.9
4.1
—
4.1
4.4
—
Storage Capacity
—
4.5
—
4.8
4.3
—
Sold By
Arsenal PC
Endless Technology Solutions
Redefine IT
Tech on Tech
MD TECH
goHardDrive
storage capacity
12000 GB
14 TB
12000 GB
16000 GB
12 TB
12 TB
hardware interface
sata 6 0 gb
sata 6 0 gb
sata 6 0 gb
sata 6 0 gb
sata 6 0 gb
sata 6 0 gb
compatible devices
Desktop
Desktop
Desktop
Desktop, PC, NAS, DAS, Storage Array
Desktop
Desktop
form factor
3.5-inch
3.5-inch
3.5-inch
3.5-inch
3.5-inch
3.5-inch

Product Description

More Value to the Data Center with Maximum Capacity, Power Efficiency and Reliability

Laying the foundation for a worry-free data center, Western Digital delivers capacity to conquer the data explosion – Ultrastar DC HC520, previously known as Ultrastar He12 and part of our HC500 series of helium-filled hard drives. Designed to handle workloads up to 550TB per year, the Ultrastar DC HC520 is the industry’s first 12TB drive and uses traditional perpendicular magnetic recording (PMR) technology to make it dropin ready for any enterprise-capacity application or environment. This high capacity helium drive offers one of the lowest power profiles in the industry to help data center architects meet eco-environmental goals and requirements. Targeted at 2.5M hours MTBF, the Ultrastar DC HC520 provides the highest reliability rating available of all HDDs on the market today by building on the successful design of its 10TB, 8TB and 6TB predecessors. Trust Western Digital and the Ultrastar DC HC520 to deliver more capacity, more efficiency, more reliability and more value to your data center.

The Technology Helps Solve Challenges Facing Next Generation Data Centers

Lowering the total cost of ownership (TCO) has become the focus of data center architects and the Ultrastar DC HC520 provides the best value proposition and greatest storage efficiency available. Compared to 8TB Ultrastar air-filled drives, this hard drive provides 50% more capacity, uses 52% less power (Watts/TB), and is 25% more reliable, rated at 2.5M hours MTBF.

“Power Disable” feature is a new industry standard feature defined for SATA devices. This new feature allows the host system to perform a hard reset to the hard drive ( HDD )

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Amazon.com Return Policy:You may return any new computer purchased from Amazon.com that is "dead on arrival," arrives in damaged condition, or is still in unopened boxes, for a full refund within 30 days of purchase. Amazon.com reserves the right to test "dead on arrival" returns and impose a customer fee equal to 15 percent of the product sales price if the customer misrepresents the condition of the product. Any returned computer that is damaged through customer misuse, is missing parts, or is in unsellable condition due to customer tampering will result in the customer being charged a higher restocking fee based on the condition of the product. Amazon.com will not accept returns of any desktop or notebook computer more than 30 days after you receive the shipment. New, used, and refurbished products purchased from Marketplace vendors are subject to the returns policy of the individual vendor.
Product Warranty: For warranty information about this product, please click here

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HGST - WD Ultrastar DC HC520 HDD | HUH721212ALE600 | 12TB 7.2K SATA 6Gb/s 256MB Cache 3.5-Inch Helium Data Center Internal Hard Disk Drive

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Customer reviews

4 out of 5 stars
4 out of 5
141 global ratings

Customers say

Customers like the durability, quality, noise, connectivity and value of the computer drive. For example, they mention it works flawlessly, is of enterprise quality and is super quiet. That said some like the speed. That being said some dislike power disable.

AI-generated from the text of customer reviews

15 customers mention11 positive4 negative

Customers like the durability of the hard drive. They say it works flawlessly, has a soft click when seeking, and has no issues with using it. Some customers also mention that the drive has problem-free operation for years beyond its 5-year warranty.

"...Very few drive failures. Problem free operation for years beyond their 5 year warranty...." Read more

"Drives are great, got 2 12TB, works fine out of the box, works great in my Synology DS215J NAS replacing my WD Red 3TB drives...." Read more

"...Gave it a try hoping it would still work. No luck in a new computer. Would not boot up. Was not even recognized as installed...." Read more

"5 year warranty is handled by SabrePC not WD.So far working very well. No bad sectors. HDDs manufactured in July/Aug 2020..." Read more

14 customers mention14 positive0 negative

Customers are satisfied with the quality of the computer drive. They mention that it's an enterprise-quality drive, has solid performance value, and has the lowest fail rate of high-capacity drives. Some say that the drives have no bad sectors and are well reviewed for their reliability.

"...Also used dozens of them at home for nearly a decade. Very few drive failures...." Read more

"This is an enterprise-quality drive --- a big investment in reliability and huge capacity...." Read more

"Drives are great, got 2 12TB, works fine out of the box, works great in my Synology DS215J NAS replacing my WD Red 3TB drives...." Read more

"...So far working very well. No bad sectors. HDDs manufactured in July/Aug 2020..." Read more

10 customers mention7 positive3 negative

Customers like the noise level of the computer drive. They say it's super quiet, reliable, and fast.

"...Excellent quality, reasonably quiet acoustics, and lower operating temperature than air-filled drives...." Read more

"...I have purchased 2 of these recently and noise level is low/good, and speed is very good...." Read more

"...Otherwise the, the drive is great.It's much quieter than my experiences with some old WD black drives...." Read more

"...The drives are noisier than the WD Red, I can hear the heads seeking during activity, not squealing or bearing, just head movement light "knocking"..." Read more

7 customers mention7 positive0 negative

Customers are satisfied with the connectivity of the computer drive. They mention that it is reliable, rock solid, and has excellent quality. Some say that the drive was new in boxes and came very well packaged and undamaged.

"...Excellent quality, reasonably quiet acoustics, and lower operating temperature than air-filled drives...." Read more

"This is an enterprise-quality drive --- a big investment in reliability and huge capacity...." Read more

"...They were new in boxes, good condition. I ran a full SMART test on them and all was good so I think things should be fine...." Read more

"I've been using this drive for a few months and it's been rock solid...." Read more

7 customers mention7 positive0 negative

Customers appreciate the value of the computer drive.

"The drives were the best price per TB ratio and well reviewed for their reliability on Backblaze stats...." Read more

"...I couldn't be happier with the performance and price point of the drive. With the increasing demands of 4k, 6k, 8k video, storage is at a premium...." Read more

"An amazing price for one of the highest-rated drive mechanisms." Read more

"They gave good bulk pricing...." Read more

5 customers mention5 positive0 negative

Customers are satisfied with the speed of the computer drive. They mention that the noise level is low and the speed is very good.

"...purchased 2 of these recently and noise level is low/good, and speed is very good...." Read more

"The HDD is super high capacity, fast enough for a HDD, and runs pretty cool...." Read more

"already transferred lot of data, no issue so far.Fast and silent" Read more

"Used for my media NAS. Super quiet, reliable, and fast...." Read more

3 customers mention0 positive3 negative

Customers are dissatisfied with the power disable feature of the computer drive. They mention that the power down option is annoying and prevents use in most external enclosures.

"...The power down option is annoying as it precludes use in most external enclosures where you can't use the sata to molex adapter that doesn't connect..." Read more

"...I failed to notice that this has POWER-DISABLED technology. I did not know what it was until i got this delivered...." Read more

"...It turns out that it was part 0F29620 with the power disable feature. I was able to get it to work by covering up pins 1-3 with tape...." Read more

3 customers mention0 positive3 negative

Customers are dissatisfied with the spin-up of the computer drive. They mention that it may need some electrical tape to spin up.

"...If the drive doesn't spin up, you may need to take some electrical tape and cover up the 3.3v pins on the power connector...." Read more

"Spin-Up Problem May Be From 3.3V Presence on SATA Power Cable..." Read more

"Received different P/N than advertised - HDD won't spin up (power-disable?)..." Read more

Failed in 11 months.
1 Star
Failed in 11 months.
Used refers drives that fail in less than a year. Tried to file for return and was told that this is not an authorized seller.
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Top reviews from the United States

Brian Abrams
5.0 out of 5 stars Excellent drive from a trusted brand
Reviewed in the United States on April 26, 2019
Verified Purchase
Been a fan of the Ultrastar drives since before Western Digital bought Hitachi's drive business. HGST/Hitachi drives are consistently rated the best in the annual drive analysis report that Backblaze releases.
Been using Hitachi drives for many years in a large enterprise environment with thousands of drives in a high density storage cluster. Also used dozens of them at home for nearly a decade. Very few drive failures. Problem free operation for years beyond their 5 year warranty.

These new helium-filled drives live up to the Ultrastar reputation. Excellent quality, reasonably quiet acoustics, and lower operating temperature than air-filled drives. They are running in the low 80 degree range installed inside 8-bay drive enclosures. The other air-filed drives in the same enclosure run at least 10 degrees warmer.

These are brand new drives with a 5-year manufacturer warranty. I verified this on the HGST warranty check website.
I ordered 3 drives which arrived in a box with a plastic drive suspension insert that could hold 4 drives.
Very happy with product and service from 'ServerPartDeals'.
12 people found this helpful
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MorganR
5.0 out of 5 stars A fabulous drive with a good cost per TB (and projected great reliability)
Reviewed in the United States on December 8, 2020
Verified Purchase
This is an enterprise-quality drive --- a big investment in reliability and huge capacity. This is the first drive I've purchased with more than 6-TB (my preferred drives to date have been Western Digital Black 6TB drives). I have to say, I'm largely a convert.

One little gotcha -- as a newer drive, and one aimed at the enterprise market, the screw holes for mounting the drive are not the same as the standard ones used on 500-GB to 6-TB drives of years past. Two are the same, and two are different on the sides, and similarly on the back. So while it's plug compatible (as a SATA drive) some mounting brackets are not compatible with it. I have an older Mac tower with four disk slots (mounting brackets not compatible) and an external RAID array enclosure with 4 disk slots (mounting insertion completely compatible). So, buyer beware ... look at the pictures of where the mounting screw holes are, and make sure they match your setup (the change is readily visible ... not a slight misalignment, but some holes missing, some extra threaded holes).
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Nik Conwell
4.0 out of 5 stars Decent drives, a bit noisy. OEM drives, so limited WD warranty (just under 1 year with WD)
Reviewed in the United States on January 21, 2024
Verified Purchase
Drives are great, got 2 12TB, works fine out of the box, works great in my Synology DS215J NAS replacing my WD Red 3TB drives.

The drives are noisier than the WD Red, I can hear the heads seeking during activity, not squealing or bearing, just head movement light "knocking" noises. Not the end of the world, but the old WD Red were totally silent; I couldn't hear anything from them, so I was a bit surprised these were so noisy.

Warranty is a bit sketchy. The listing did note:

"Up to 2.5M hours MTBF with a 5 year limited OEM warrant direct with Authorized Reseller"

I registered the drives with WD and they said the warranty was until Dec 2024 (so just less than 1 year) since the drives are sold OEM it's up to the seller to provide the warranty. We will see if the reseller "The Nekid Cow" will provide warranty service in the next 5 years if I have an issue with the drives. I would have felt more comfortable if I had the 5 year warranty with WD, but I do realize I was getting a good deal on these drives so is reasonable.

They were new in boxes, good condition. I ran a full SMART test on them and all was good so I think things should be fine. I'll update the review later if there are issues.
One person found this helpful
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KZ
1.0 out of 5 stars NOT NEW nearly 5 years old!!!
Reviewed in the United States on April 2, 2024
Verified Purchase
Bought a Western Digital 12TB DC HC520 HDD listed as new. Arrived in a very plain unmarked box no labels of anything that would hint of what was inside. Did find inside what I thought was a new 12TB HDD until I looked at the manufacturers date of Oct 29-2019. Something nearly 5 years old is NOT new. Gave it a try hoping it would still work. No luck in a new computer. Would not boot up. Was not even recognized as installed. I have now tried two with the exact same manufacturer date and exact same result would not boot up would not even try. I have asked for a refund and Amazon needs to think about it…. for up to a week. I got scammed and Amazon needs to think about it!!
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G. Sollner
5.0 out of 5 stars Not the exact model advertised, but OK for me
Reviewed in the United States on March 8, 2024
Verified Purchase
I ordered the HUH721212ALE600, as advertised, but I received the HUH721212ALE604. The difference is that the 600 has Instant Secure Erase, while the 604 only has Secure Erase. A Western Digital tech brief explains the difference, but from my intended use, PC backup, it makes little difference. The 600 can instantly securely erase all data, while with the 604 you have to overwrite any data with new data to hide the old data. This can take a long time for a large drive like this one. I don’t need to hide any data as long as the drive is serviceable. Backblaze drive statistics for 2024 give the two drives nearly equivalent failure rates, both very low. So, bottom line, I don’t mind terribly being shipped a drive different from the one I ordered.

The drive I received was manufactured in 2019, so the seller, Nekid Cow (really), provides their own 5-year warranty, though how it compares to the original, I don’t know. It is a new drive, with only 56 hours of use, which may be for manufacture's testing, burn-in, infant-mortality elimination, etc.

This is the fourth HGST drive I have put into service, one now with 38,000 hours of service, and they all are healthy according to SMART. HGST was bought by Western Digital, but WD drives are equally reliable according to Backblaze published reliability reports.
2 people found this helpful
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NobleMD
5.0 out of 5 stars Good 12 TB HDD - Good price
Reviewed in the United States on March 29, 2021
Verified Purchase
5 year warranty is handled by SabrePC not WD.
So far working very well. No bad sectors. HDDs manufactured in July/Aug 2020

Ordered another 3 of these from SabrePC (ordered on Amazon - shipped by SabrePC). Arrived packaged very good in 1 large box with internal packing and each HDD in separate smaller box with end supports suspending drives in center of box. All drives manufactured in Nov 2020. My Synology 1621+ now has 6x12TB HDD RAID 5 with 52.4TB available storage in multiple Volumes.
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Top reviews from other countries

Ace Azzameen
5.0 out of 5 stars Good value and performance, but surprisingly noisy
Reviewed in Singapore on April 5, 2021
Verified Purchase
Bought this based on its excellent results in the Backblaze reports. Performance is good and great value for 12TB and 7200rpm. One small annoyance: there are more mechanical noises than I expected from a modern HDD (and this drive has passed all SMART and bad sector tests). They are audible through a full tower ATX case (Fractal Design Meshify 2XL) despite being mounted using rubber grommets etc. So you certainly know when it's working, much like a 1990s HDD or 5.25"/3.5" floppy drive. Not a big deal for me but something to be aware of.
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WeiP
5.0 out of 5 stars It just worked
Reviewed in Singapore on February 24, 2021
Verified Purchase
Worked perfectly for in a freenas setup of 6 disks.
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