Hitachi Reveals Super Skinny 7mm HDDs

Hard drive manufacturer Hitachi Global Storage Technologies Tuesday launched the Z-Series family of TravelStar and CinemaStar 2.5-inch HDDs, sporting a super-thin size of 7-mm and packed with up to 320 GB of storage on a single platter. This new series will include the TravelStar Z7K320 family, the world's first 7200 RPM, 7-mm 2.5-inch drives, and the CinemaStar Z5K320 family, the first 7-mm drives optimized for audio/video devices.

"From laptops and handhelds to PVRs and blade servers, Hitachi’s new 7-mm Z-series family of TravelStar and CinemaStar drives are designed as a direct replacement for today’s standard 2.5-inch, 9.5-mm hard drives," the company said. "All Hitachi Z-series drives feature common connectors and common mounting points for simple integration into existing systems, and enable greater design flexibility to differentiate and meet market demands for new, thinner, lighter and more robust devices."

In addition to the thin size, the new TravelStar Z7K320 family uses 16 MB of cache and a Serial ATA 3Gb/sec interface. Apparently they're also eco-friendly, incorporating a halogen-free design while offering 1.8 watts read/write power and 0.8 watts low power idle for more unplugged computing time.

Hitachi is also launching the TravelStar Z5K320 family, a less-beefy version with 5400 RPM, 8 MB of cache, and a Serial ATA 3Gb/sec interface. These drives are also slated as eco-friendly, offering 1.6 watts of read/write power and 0.55 watts of low power idle.

As for the CinemaStar Z5K320 family, these 2.5-inch drives provide 5400 RPM, 8 MB of cache, and a Serial ATA 3Gb/sec interface. This family is particularly unique thanks to the 1.9 idle / 2.0 seek bels, making them the quietest 7-mm 2.5-inch drives thus far "for bedroom-quiet systems." Hitachi said that volume shipments of the Travelstar Z5K320 will begin in July. The Travelstar Z7K320 and the CinemaStar Z5K320 drive families will begin to ship in August.

  • jerreece
    Hard Drives just keep getting small and smaller, and storage space bigger. This is a good thing. Hopefully they continue to use less power too!
  • razor512
    Hopefully it performs as well as other drives or no one will buy it.
  • Gin Fushicho
    I'm seriously confused on the size. is it 7mm's or 2.5 inches?
  • jellico
    Yeah, these are still the first choice for laptops since SSDs are still quite expensive. It's pretty cool how they keep shrinking these things. I wonder what the lower limit on size will end up being.
  • unrealpinky
    These drives have the potential to being on par or better with existing 5400rpm hard drives due to the single and lighter platter. Would definitely like to see some benchmarks on these.
  • Anomalyx
    Gin FushichoI'm seriously confused on the size. is it 7mm's or 2.5 inches?7mm thick, 2.5 in wide
  • fatkid35
    Gin FushichoI'm seriously confused on the size. is it 7mm's or 2.5 inches?
    thats what your girlfriend said.
  • jrharbort
    Finally some competition for the 7mm hard drives released by seagate a few months ago. These will finally allow some super thin notebooks and netbooks that currently have to accommodate thicker 9.5mm drives. The lower power consumption is also a huge plus for longer battery life.

    320GB for a single platter isn't bad either. My current hitachi drive is a two platter, 320GB model.
  • Pyroflea
    That's pretty cool, these things are getting ridiculously small. They need to start making other hardware smaller as well. Imagine a high-end, low poer, Mini-ITX gaming platform? That'd be awesome.
  • cadder
    these things are getting ridiculously small

    They have put hard drives into camera memory cards, which makes a 7mm drive seem pretty big, but 7mm drives would be good for touchpad devices and so forth.