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8.0TB Ultrastar® He8 Hard Disk Drive
Enterprise Class

3.5-Inch | SAS 12.0Gb/s | 7200RPM | 128MB Cache
Innovation for Next-generation,
High-density Data Centers
HelioSeal® Delivers Twice the Capacity Using One-Quarter Less Power
One-third more capacity and 23% lower energy consumption. Available today. That's the power of helium. Delivering high capacity at 8TB, Ultrastar He8 is based on the widely accepted and proven HelioSeal platform. HelioSeal technology replaces air with helium inside the drive, reducing air turbulence and enabling 7Stac™, a seven-disk design in a traditional 3.5-inch form factor.

Ultrastar He8 goes beyond what any air-based HDD can do and seamlessly integrates into virtually any mainstream enterprise environment. Cooler and quieter with excellent power efficiency (Watts/TB) and no-compromise performance, the Ultrastar He8 lays the foundation for future growth in massive scale-out environments.
TCOptimized™ — Increasing Storage Efficiency to Drive Down Data Center TCO
HGST recognizes the growing pressures that data centers face. Volume is expanding, operating costs are rising while budgets remain flat. Lowering the total cost of ownership (TCO) has become the focus of data center architects. Ultrastar He8 provides a unique TCO value proposition and delivers greater storage efficiency with breakthroughs in capacity, power efficiency and performance.

This HelioSeal hard drive achieves up to 3X higher random write performance than the prior generation, Ultrastar He6, thanks to HGST media cache architecture, a disk-based caching technology. Designed to handle workloads of up to 550TB per year, He8 offers either a 6Gb/s SATA interface or 12Gb/s SAS interface for easy integration into high performance data centers. Features like Rebuild Assist dramatically reduce RAID rebuild times and maintain system performance during the rebuild process.
Data Security with Industry-Leading Quality and Reliability
Compliance and privacy requirements drive the need for increased data security. Ultrastar He8 offers security and encryption options to protect data from unauthorized use. Instant Secure Erase (ISE) models expedite drive redeployment and retirement. Encryption models protect data with hardware-based encryption, including a Trusted Computing Group (TCG) option with FIPS 140-2 certification, Level 2.

The Ultrastar He8 extends HGST's long-standing tradition of reliability leadership with a 2.5M-hour MTBF rating. HGST's drive reliability and security options also help lower data center TCO.
HGST Quality and Service
HGST's Ultrastar He8 extends the company's long-standing tradition of perfor- mance and capacity leadership. The proven drive design enables high reliability and availability to customer data.

Ultrastar quality, performance and world class technical support and service provides customers with a lower total cost of ownership over previous generations.
A Note on SAS Compatibility
SAS drives are not compatible with SATA interface storage solutions. If you're not sure if you need a SAS, SATA, or any other type of drive, please contact our Customer Service team for assistance.
Note: This 8.0TB HDD utilizes a new standardized mounting screw pattern that is not compatible with older Mac Pro models. In a Mac Pro tower, the drive can be installed in an empty optical drive bay using an OWC Multi-Mount Bracket for 2009/10/12 Mac Pro, or an OWC Multi-Mount Bracket for 2006/07/08 Mac Pro.

8.0TB HGST Ultrastar® He8 Specifications:


Form Factor
3.5″ HDD
SAS 12.0Gb/s
Formatted Capacity2
Rotational Speed
7,200 RPM
Cache / Data Buffer
Manufacturer Model Number


Height (max)
26.1mm (1.027″)
Width (max)
101.6mm (4.0″)
Length (max)
147mm (5.787″)
Weight (typical)
650g (1.433 lbs.)
Areal Density


MTBF (Mean Time Between Failures)
2,000,000 hours
Contact Start-Stops
Nonrecoverable Read Errors
1 per 1015 bits read
5 Year HGST Warranty


Transfer Rate (Max)
Average Seek Time


Maximum Start Current, DC
2.0 Amps
Read Power
9.1 Watts
Write Power
9.1 Watts
Idle Mode
5.7 Watts

Environmental (Operating)

70 G max at 2ms
Ambient Temperature (°F)
41°F to 140°F
Ambient Temperature (°C)
5°C to 60°C
0.67 G (5 to 500 Hz)
Relative Humidity (non-condensing)
8% to 90%
-304.8 m to 3,048 m (-1,000 ft to 10,000+ ft)

Environmental (Non-Operating)

350 G max at 1ms
Ambient Temperature (°F)
-40°F to 158°F
Ambient Temperature (°C)
-40°C to 70°C
1.04 G (5 to 500 Hz)
Relative Humidity (non-condensing)
5% to 95%
-304.8 m to 12,192 m (-1000 ft to 40,000+ ft)


Idle (Typical)
2.0 bels
Seek (Typical)
3.6 bels
  1. 1GB = 1,000,000,000 bytes. Total accessible capacity varies depending upon operating environment (typically 5-10% less). The actual total capacity will depend on your own defined file settings/preferences.
  2. In terms of standard gigabytes, 1GiB ≈ 1.074GB and refers to the actual formatted capacity of shown under Mac OS 10.5 or earlier and Microsoft Windows OS.
  3. Specific application environments such as temperature and duty cycle will affect the overall reliability rates.
Manufacturer provided specifications for HGST p/n HUH728080AL5200 UPC#: 829686004221
This product is compatible with... Learn how to find your Mac's model ID
Xserve Intel
Xserve 8-Core (Early 2009)
(April, 2009)
Model ID: Xserve3,1
2.26GHz, 2.66GHz, 2.93GHz
Xserve Intel
Xserve Quad-Core (Early 2009)
(April, 2009)
Model ID: Xserve3,1
Xserve Intel
Xserve (Early 2008)
(January, 2008)
Model ID: Xserve2,1
2.8GHz, dual 2.8GHz, dual 3.0GHz
Xserve Intel
Xserve (Late 2006)
(August, 2006)
Model ID: Xserve1,1
dual 2.0GHz, dual 2.66GHz, dual 3.0GHz
Mac Pro
Mac Pro
Models equipped with a SAS Controller Card
PowerMac G4
Power Mac G4 & G5
Models equipped with a SAS Controller Card
PC Servers
PCIe capable servers
With an installed
SAS PCIe Controller
3.5-inch SAS Enclosures
3.5" SAS Enclosures


The best warranty is one you never have to use - but should the need occur - we're proud to provide a superior level of support and service coverage to our customers.

90 Day OWC Replacement Warranty
OWC is proud to offer an extended replacement window of 90 days on new internal hard disk drives. Once a return authorization number has been issued and we receive the problematic drive back, you will get a brand new replacement drive, rather than a factory refurbished drive.

5 Year HGST Warranty
After 90 days, the drive is fully backed by the manufacturer to be free from defects in material and workmanship for the remainder of the five year warranty period.

Customer Ratings

Write a Review 4 / 5 3 out of 3 (100%) reviewers would recommend this product
Verified Buyer
Reviewer: NorCalFrank Location: Lincoln, CA Age: 55-65 Experience Level: IT Professional Owned Product: 1-3 months
Rating: 2/5 Careful with older Macs May 15, 2018 I purchased this enterprise HD for my older Mac Pro and ended up utilizing it in my PC. The Mac refused to see it- I should say it saw it once, but not again. It could be my older OS 10.11.6 - not sure, but it didn't play well. The recommendation "Yes" rating comes at least from the fact that I did get it work, and usable. I purchased a reconditioned 6TB a year ago that ended up not working at all (but through my own delay didn't return in time). I formatted it in the same Mac Pro, and it showed up a couple times and then no longer. Again, I am not sure if it's the quality of the drive, or the age of my Mac and OS - which I'm hoping to get as much life out of as possible.

I would recommend this item to a friend! This review is from 8.0TB HGST Ultrastar He8 3.5-inch SATA 6.0Gb/s 7200RPM Enterprise Class Hard Drive. Customer Videos:

Response from, Call Center May 15, 2018 I'm very sorry about any issues you were experiencing with your HGST Ultrastar He8 HDD. With the 2009-2012 Mac Pros, we have seen some issues with these drives mounting after a restart. In order to get them to mount, it is best to shut down completely and boot fresh. We have this notated on the compatibility for the drive, and do apologize if it was unclear.
Verified Buyer
Reviewer: PeaceofMind Location: Oz Age: 55-65 Experience Level: Power User Owned Product: less than a month
Rating: 5/5 Enterprise storage at entry level prices April 1, 2018 I have been a long time user of the Hitachi (HGST) hard disks and am very pleased with the new 8Tb Ultrastar disks. The are quiet in use and very fast at a price that cannot be matched. Well done.

I would recommend this item to a friend! This review is from 8.0TB HGST Ultrastar He8 3.5-inch SATA 6.0Gb/s 7200RPM Enterprise Class Hard Drive. Customer Videos:

Verified Buyer
Reviewer: olufsen Location: Western Washington Age: 45-54 Experience Level: Home User Owned Product: less than a month
Rating: 5/5 Great Price December 31, 2017 MacSales had these for a great price so ended up with 3 of these. Love HGST drives and great price for the 8TB. Only warning I may have, I have a mid 2012 MacPro. While these run fine you need the new mounting sleds the OWC also sells due to the screw location being changed.

I would recommend this item to a friend! This review is from 8.0TB HGST Ultrastar He8 3.5-inch SATA 6.0Gb/s 7200RPM Enterprise Class Hard Drive. Customer Videos:

Verified Buyer
Reviewer: donutcritic
Rating: 5/5 Works as advertised February 4, 2017 I just installed these 8TB gems in my Synology NAS. Others have complained about infant mortality but so far (24h) these drives have been fine. I decided to buy the HGST drives based on BackBlaze's analysis of drive failures, HGST consistently has the lowest failure rate in their fleet.

I would recommend this item to a friend! This review is from 8.0TB HGST Ultrastar He8 3.5-inch SATA 6.0Gb/s 7200RPM Enterprise Class Hard Drive. Customer Videos:

HGST 8.0TB Ultrastar® He8 Hard Disk Drive Mfr P/N: HUH728080AL5200 OWC SKU: HIT0F23268 Enterprise Class
128MB Cache 7200RPM
SAS 12.0Gb/s (6.0Gb/s backwards compatible)
3.5-inch Hard Disk Drive.
HGST 5 Year Limited Warranty
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