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Item#: N82E16822178379

Seagate Hybrid Drive ST4000DX001 4TB MLC/8GB 64MB Cache SATA 6.0Gb/s NCQ 3.5" Desktop SSHD

  • Solid state speed for fast, responsive system performance
  • Innovative use of solid state memory delivers affordable performance and capacity
  • NAND Flash and HDD technology
  • 3-year limited warranty
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This product qualifies for the Iron Egg guarantee. We'll match any qualifying competitor's price.
BUY WITH CONFIDENCE
This product qualifies for the Iron Egg guarantee. We'll match any qualifying competitor's price.
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Learn more about the Seagate ST4000DX001

Model

Brand
Seagate
Model
ST4000DX001
Packaging
Bare Drive

Performance

Interface
SATA 6.0Gb/s
Capacity
4TB+8GB NAND Flash
Cache
64MB
Average Seek Time
<12ms
Average Write Time
<12ms

Physical Spec

Form Factor
3.5"

Features

Features
The first solid state hybrid drive (SSHD) in a 3.5-inch form factor

Boots and performs like an SSD

SATA 6Gb/s with NCQ for interface speed

Faster than a traditional HDD

All-in-one design for simplicity and ease of installation

Installs and operates like a standard hard drive: cross-platform, no drivers or additional software required

Quick Info

Warranty

  • Limited Warranty period (parts): 3 years
  • Limited Warranty period (labor): 3 years


Customer Reviews of the Seagate ST4000DX001

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Showing 16 of 16 reviews - Clear Filters

  • Donald E.
  • 4/22/2014 12:32:48 PM
  • Tech Level: High
  • Ownership: 1 day to 1 week
  • Verified Owner

2 out of 5 eggsDisappointed

This review is from: Seagate Hybrid Drive ST4000DX001 4TB MLC/8GB 64MB Cache SATA 6.0Gb/s NCQ 3.5" Desktop SSHD

Pros: Plenty of speed and storage. Had no problem getting the full 4TB recognized. Windows 8.1 w/Update 1 loaded without a hitch.

Cons: Again, Installed windows 8.1, worked like a champ. Started copying data from 1.5 TB WD RE drive it was replacing. (It had reached capacity after 2.5+ trouble free years.) After about 95% done and the 4TB failed,,,, hard! Very discouraging.

Other Thoughts: New egg is replacing the drive. Hopefully my experience is an exception and the replacement drive can give years of trouble free operation that I have experience with the 2.5" SSHDs in other application.

Did you find this review helpful? Yes No

  • kwokken m.
  • 4/20/2014 8:01:04 AM
  • Tech Level: Somewhat High
  • Ownership: 1 week to 1 month
  • Verified Owner

2 out of 5 eggshumvee drive

This review is from: Seagate Hybrid Drive ST4000DX001 4TB MLC/8GB 64MB Cache SATA 6.0Gb/s NCQ 3.5" Desktop SSHD

Pros: Fast
High Capacity
Low power

Cons: Drive motor below expectation, emits a sound between a hum and a vee noise

Other Thoughts: If you are looking for a fast, high capacity, low cost and cool to the touch drive, this is the drive you want. Unfortunately, I got a humvee drive where the motor emits a constant low level noise between the sound of a hum and a vee, so I am calling this a humvee drive!! I can't stand the humvee noise after a few minutes of being 5 feet away from the enclosed and internally sound padded desktop case.

I don't know how seagate can claim their drives are quiet, when every single 3TB and 4TB drives I have emits low level white noise from the motor, becomes a roar in a raid set of 5 drives each.

Did you find this review helpful? Yes No

  • Jason A.
  • 4/16/2014 12:13:22 PM
  • Tech Level: High
  • Ownership: 1 day to 1 week
  • Verified Owner

5 out of 5 eggsSize and Speed - awesome

This review is from: Seagate Hybrid Drive ST4000DX001 4TB MLC/8GB 64MB Cache SATA 6.0Gb/s NCQ 3.5" Desktop SSHD

Pros: Very fast reads due to 8GB SSD hybrid. I installed this on my old iMac Mid 2007 and everything is considerably faster. Boot times went from 1:43 to 0:33 on a fresh install of Mavericks. Writes are still about the same as any hard drive, but on par with other current generation hard drives.

One improvement that surprised me was that Minecraft is notably more consistent in frame rate with the new drive. I'm guessing that textures can load more quickly with the SSD Cache. My frame rates previously would vary between 60fps and 6fps, averaging about 39fps or so. Now, my average is closer to 45, but it has not been below 30fps.

Cons: None So Far.

Other Thoughts: I bought two of these, one to serve as a backup drive (and later to be allocated to a new PC). The only issue is that my external drive enclosure only supports 3TB, not 4TB. Purely my fault for not researching, but for some this could be a con to purchasing this size drive. If you plan to use this drive (or any other 4TB drive, make sure you verify your enclosure supports 4tb+). Most as of this writing have a 3TB cap.

The more you know....

1 out of 1 people found this review helpful. Did you? Yes No

  • Bob N.
  • 4/14/2014 9:37:00 AM
  • Tech Level: Average
  • Ownership: 1 day to 1 week
  • Verified Owner

5 out of 5 eggsSo far so good

This review is from: Seagate Hybrid Drive ST4000DX001 4TB MLC/8GB 64MB Cache SATA 6.0Gb/s NCQ 3.5" Desktop SSHD

Pros: Works - that is always good for a hard drive. Packing was pretty good but I am sure the delivery company can overcome any packing. Haven't exhaustively tested it yet but HD Tune Pro reports 3 to 4 times as fast as 4 TB drive depending on transfer size and it maintained transfer rates of over 150 MB/sec for all transfer sizes over 1 MB.

Cons: None so far

Other Thoughts: I got this to complement my SSD system drive. I moved all the program data files and MyDocuments to this drive plus all the normal data files I use. Most file it would read in normal use are within the limit of the flash memory so I should see some improvement over a normal HD.

Did you find this review helpful? Yes No

  • David K.
  • 3/26/2014 12:37:49 PM
  • Tech Level: High
  • Ownership: less than 1 day
  • Verified Owner

5 out of 5 eggsImpressed

This review is from: Seagate Hybrid Drive ST4000DX001 4TB MLC/8GB 64MB Cache SATA 6.0Gb/s NCQ 3.5" Desktop SSHD

Pros: Faster than expected.

Cons: Costs money, occupies space, isn't as fast as RAM.

Other Thoughts: This SSHD hybrid was not much more expensive than an pure HD so I opted to try it.

Installed in my 2006 vintage MacPro 1,1 with slower SATA than this drive is capable of. Moved 1.9TB of my archives from another drive and the rate was limited by what the other would move. Then I launched md5 on all the copied files and was delighted to see the sustained read data rate between 155 and 200 megabytes/sec, favoring the high end of that range. First evening of use, I'm pretty happy.

1 out of 2 people found this review helpful. Did you? Yes No

  • Keith S.
  • 3/25/2014 7:25:50 AM
  • Tech Level: Somewhat Low
  • Ownership: 1 day to 1 week
  • Verified Owner

4 out of 5 eggsRecieved

This review is from: Seagate Hybrid Drive ST4000DX001 4TB MLC/8GB 64MB Cache SATA 6.0Gb/s NCQ 3.5" Desktop SSHD

Pros: Recieved sooner than expected, Packed well,

Cons: none yet,

Other Thoughts: Still getting parts to replace 12 Yr old EMachine,

0 out of 5 people found this review helpful. Did you? Yes No

5 out of 5 eggsgreat HTPC drive

This review is from: Seagate Hybrid Drive ST4000DX001 4TB MLC/8GB 64MB Cache SATA 6.0Gb/s NCQ 3.5" Desktop SSHD

Pros: capacity
faster than a standard HDD

Cons: file transfers don't benefit from the SSHD technology
boot times not as fast as the SSD this replaced

Other Thoughts: The mini-ITX case I installed this in only has 1x3.5" internal bay so this hybrid drive is a nice compromise. The setup this replaced was a 64GB SSD boot drive and a 750GB laptop drive. I had these drives in a 3.5"->2x2.5" adapter. Prior to this hybrid drive, my boot time was 11 seconds and I averaged just under 100MB/s transfers. With this drive my PC boots in 14 seconds and I average almost 130MB/s transfers. I rarely have to boot my HTPC since it's left on so in my case the 30% slower boot time is worth the 30% increase in transfer speeds. I love the capacity of this drive and how it's SSHD technology works, while the boot time with my SSD/HDD duo was a little faster I don't miss that setup at all. The capacity of this drive is amazing and the speed is great. I did compare this drive to a SSD in the "cons" but while it shares some of the same technology it isn't advertised as a SSD so it's an unfair comparison. If you're in a situation like me where your case only has 1 bay for an internal drive, or you're just looking to have a minimal footprint inside your case you should definitely look at this drive.

8 out of 15 people found this review helpful. Did you? Yes No

4 out of 5 eggsSolid HDD - Not an SSD replacement

This review is from: Seagate Hybrid Drive ST4000DX001 4TB MLC/8GB 64MB Cache SATA 6.0Gb/s NCQ 3.5" Desktop SSHD

Pros: I really wish Seagate would market this drive differently so as to avoid any negative backlash on it's performance. There is no question that this drive is certainly solid and decently fast for a mechanical drive. That being said, you will not get anywhere near SSD performance out of it.

The attached 8GB of flash storage acts as a larger on board cache. You cannot directly install or transfer files to it, it simply finds what files you access the most and keeps them for later, albeit faster, access. I'll leave the technical benchmark numbers to the other reviewers as there is no sense in cluttering the page up with duplicate results, but if you take a look you will see that it does perform on par with other mechanical drives of its size.

I noticed that it seemed to perform much better with smaller files and there were diminishing returns with the bigger the files. This of course meant countless opening and closing of the same files over and over with a stop watch to see if the speed increase was real or simply perceived.

Cons: I'm a little disappointed that they market this drive for speed, but the platters only spin up to 5900 RPM. The standard for "fast" mechanical drives is and has been 7200 RPM for a long time now. They get a little bit faster but are usually reserved for enthusiasts or enterprise solutions. There was a considerable difference in speed when I transferred a 20GB 1080P video from my main SSD to this drive, and then pitting it against my other 2TB 7200 RPM drive. Because this was a large file and a one time transfer, the 8GB of flash storage doesn't come into play at all and it relies totally on the platter speed to which this unit has a disadvantage.

I think Seagate is doing themselves a disservice by only attaching 8GB of flash storage, especially considering the cost has of NAND memory has never been lower (not counting natural disasters). Setting a minimum of 16 GB would allow plenty of room for the OS to boot quickly, as well as room for resource intensive apps (Adobe creative suite, anyone?) to load in a snap. Making it 7200 RPM and just tacking on a few bucks to the price tag would be icing on the cake and an ideal compromise in my opinion.

Other Thoughts: So, who is this drive really geared towards? If you find yourself using the same programs or files over the course of a work day then you could potentially find benefit with this unit. You'll see your OS boot a little bit faster, your favorite maps in a video game may also see an increase, but is it worth the premium? If you are in the market for a large capacity drive for daily use, then yes I think it is. I would not recommend this drive for storage such as a NAS or streaming device, you would be throwing money down the well in that scenario.

If you are looking for the best possible boot and application launch times and you don't have an immediate need for Terabytes of storage then save your money and get a real SSD, you'll be much happier you did.

*Tech note - Ensure your motherboard and OS support hard drives 2TB in size and over. Most modern hardware shouldn't have an issue, but it's better to double check before spending your hard earned cash*

**Full disclosure, I was offered this drive for reviewing purposes**

18 out of 23 people found this review helpful. Did you? Yes No

4 out of 5 eggsTL;DR why use 1200 words with 500 make the point?

This review is from: Seagate Hybrid Drive ST4000DX001 4TB MLC/8GB 64MB Cache SATA 6.0Gb/s NCQ 3.5" Desktop SSHD

Pros: I have avoided these ‘Hybrid Drives’ for one simple reason: IF you need SSD speeds why don’t you just buy an SSD? So of course I did just that and have achieved 1.5GB/s (yes GB) sustained read/writes. However such a setup for 4TB will cost you 4x(1TB SSD)=$2400, RAID card with battery=$800 for a total of $3200. Therefore a 4TB solution which proports to bridge the gap between cheap HDDs and expensive SSDs was something I was happy to check out.

Cons: I use these large capacity hard drives for backups and as such my reads/ writes are very sequential. When I use conventional Seagate enterprise class HDDs I get speeds of 100MB/s. With this drive I was able to get a sustained speed of 150MB/s. Frankly I was a bit disappointed, but let’s be fair and take a look at what an SSHD disc really is…

“The fundamental design principle behind SSHDs is to identify data elements that are most directly associated with performance (frequently accessed data, boot data, etc.) and store these data elements in the NAND flash memory. This has been shown to be effective in delivering significantly improved performance over the standard HDD.”

Thus the “SSD” capacities of this drive were designed for the random read/writes performed by the OS so I decided to put this drive head to head with my 6gbps Corsair 128GB SSD. The data below is for those 0.5-4kb read/writes used by your OS and the results are impressive compated to normal HHDs which are lucky to break 5MB/s for 0.5-4kb transfers

Corsair 128GB GS SSD (Read/Write)
0.5kb: 16.7MB/s 17.2MB/s
1kb: 30.2MB/s 33.5MB/s
2kb: 64.5MB/s 67.8Mb/s
4kb: 207.5MB/s 135.2MB/s

Seagate SSHD 4TB (Read/Write)
0.5kb: 13.3MB/s 10.6MB/s
1kb: 26.1MB/s 20.2MB/s
2kb: 49.1MB/s 38.4MB/s
4kb: 86.7MB/s 64.5MB/s

As you can see this SSHD is ~ %66 as fast of a SSD for those data sets used most by your OS 0.5kb-4kb. However at larger data sets (8192kb) the percentage drops to ~29% the performance of the SSD.

SSD achieves 522MB/s 549MB/s (read/writes)
4TB SSHD achieves 154MB/s 153MB/s (read/writes).

Other Thoughts: Seagate has realized that the average consumer cant afford an all SSD setup and has attempted to bridge the cost gap between SSDs and HDDS with this SSHD drive. For that I give them my praise.

As for my criticism: Do not call this a SSHD hybrid drive. The SSD of this drive is not formatable, it is a CACHE. This cache makes this drive the best HDD I have ever used in terms of performance but to call a CACHE an SSD is simply a lie by the marketing department.

So should you, the consumer, buy this drive??

If you need a 4TB drive for archival and backups: NO, you can buy cheaper 4TB drives

If you need a 4TB drive as your primary HDD and cannot afford an SSD: YES, it’s the best 4TB drive you can buy performance wise.

If you can afford an SSD but also want a good 4TB HDD for content: YES, but now you are paying a premium for two drives.

17 out of 21 people found this review helpful. Did you? Yes No

  • Samuel L.
  • 12/11/2013 3:52:10 PM
  • Tech Level: Somewhat High
  • Ownership: 1 day to 1 week
  • Verified Owner

1 out of 5 eggsGarbage

This review is from: Seagate Hybrid Drive ST4000DX001 4TB MLC/8GB 64MB Cache SATA 6.0Gb/s NCQ 3.5" Desktop SSHD

Pros: Nothing

Cons: Just awful. The drive was defective on arrival, and not a shred of my experience suggests any SSD like presence. It's slow, CONSTANTLY encounters 30secs-1minute freezes, around 3-4 times 5 minutes prior to attempting to write this review, I almost had to go on my phone.

This is fingers crossed this arrived defective, as I'm never going to purchase another product from Seagate ever again.

Be warned, this blows.

0 out of 37 people found this review helpful. Did you? Yes No

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