Four 3 TB Hard Drives, Tested And Reviewed

Who Sells The Best 3 TB Hard Drive?

The latest 3.5” hard drives offer up to 3 TB of storage capacity. Western Digital was first with its Caviar Green WD30EZRS, and now Hitachi and Seagate have added competing products to their portfolios.

In this comparison, we put the Western Digital drive up against its 3 TB competitors: two drive from Hitachi (the Deskstar 5K3000 HDS5C3030ALA630 and Deskstar 7K3000 HDS723030ALA640), as well as Seagate's Barracuda XT ST33000651AS.

Sure, the 3 TB labels on the hard drives look impressive, but you have to exercise caution on many computers, which are incapable of recognizing and utilizing the drives properly. Making them run as intended often requires particular platform choices and a suitable operating system. And you can forget about using them as boot drives if you're not using a UEFI-equipped motherboard.

Despite those configuration-related hurdles (which we're going to have to collectively overcome at some point anyway if we want to see even larger disks), 3 TB drives still represent a very important pillar in storage environments, either at home or in enterprises. SSDs are superior in many ways, but they're definitely not in the position to displace conventional hard drives when it comes down to basic data storage. As a result of high capacity, low cost per gigabyte, and low power consumption per gigabyte, magnetic storage remains the only reasonable choice for backup, archiving, and user data.

Performance and Energy Saving

Our test candidates can be divided into two different camps. One is made up of the Western Digital Caviar Green WD30EZRS and the Hitachi Deskstar 5K3000 HDS5C3030ALA630. Their moderate spindle speeds translate to low power consumption, moderate temperatures, and minimal noise.

The second group is made up of the Hitachi Deskstar 7K3000 and Seagate Barracuda ST33000651AS XT. Their 7200 RPM speeds promise more performance. Power saving is not the main focus for these products, which is immediately reflected in their somewhat-higher power consumption.

  • agnickolov
    Three terabyte hard drives remain premium products, not only because they're best handled by enthusiasts who know what they're doing, but also because they're the largest disks available and you always seem to pay more for the largest, fastest, coolest...well, you know the drill.
    Well, that's no longer the case:,13371.html
  • The_King
    Seagate 5 year warranty FTW
  • vdr369
    Seagate barracuda is pulling my heart with it's performance, but punching my pocket with it's price,
  • salb99
    the hitachi 5k3000 at max throughput uses less power than at idle, is it correct? also, video power consumptions here are the same as idle for all drives.
  • dww
    I don't see the point of 3 TB drives. Too big to use in most current systems, but too small to be a useful gain over 2 TB for those that CAN handle larger sizes. At present they're also too expensive, and once 4 TB drives come out in volume they'll be superseded. So I guess they're just a short term stopgap.
  • excidium
    Graph labels for the 7K3000 are incorrect ( 5400RPM ) on page:
    Benchmark Results: Throughput And Interface Bandwidth

    Haven't finished reading the rest of the article.
  • WD30EZRS recommended for NAS?
    how about TLER ? and the issue with frequent head parking ? Though the later is correctable with wdidle3.exe..
    Considering each green drive might have different rotation speed are you sure about your NAS recommendation?
  • monkeysweat
    i know 2TB is cheaper per GB,, however i only got 4 HDD slots in my case,, and 3 are in use already,, 1.5, 2.0 & 2.5 TB model drives + 1 SSD tucked under my card reader,, either i gotta spend more on a new case + drive or just spend a little more on a nice drive...
  • chesteracorgi
    With 2 Samsung 2.0 TB F4 Ecogreen (SATA 3.0 & 32 MB cache) and 2 1.5 TB Seagate Barracuda Green (SATA 6.0 & 64 MB cache) drives installed in my home server, it is my experience that HDDs are no better off on SATA 6.0 than on SATA 3.0. If you are looking for performance then look for a faster rpm rate: the 640 GB WD Caviar Black (SATA 6.0 & 64 MB cache) kills all of the above in speed. However, none of these HDDs can touch an older generation SSD like the Crucial C300 (128 GB).

    The most important characteristic of the HDDs is reliability. So far, since 3/11, all of the HDDs have proven reliable, while the SSD had to be RMA'd after a couple of weeks.

    But the story is not complete on any of this hardware as it is still premature to talk about long term results. I believe that reliability is the biggest issue with 3 TB drives and would like to see more on failure rates and reliability.

    BTW the average feedback at Newegg on large HDDs is about 60% positive (4 or 5 eggs) on large drives. I made a decision to buy only drives with a rating of at least 80% aggregate positive.
  • nforce4max
    I went with three 2TB Hitachi drives instead.