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News All new hard drives will be "4k advanced format"

Discussion in 'Article Discussion' started by CardJoe, 2 Feb 2010.

  1. CardJoe

    CardJoe Freelance Journalist

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  2. kenco_uk

    kenco_uk I unsuccessfully then tried again

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    I wonder if it'll affect speed or capacity?
     
  3. devdevil85

    devdevil85 New Member

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    A step in the right direction it seems... I'm with kenco: will speed or capacity be affected?
     
  4. mi1ez

    mi1ez Active Member

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    First time I've even heard about this! Very rare I let something like this slip...
     
  5. [USRF]Obiwan

    [USRF]Obiwan New Member

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    what is 4k over 2TB drives these days. Its like one human hair on a basketball court!
     
  6. Da_Rude_Baboon

    Da_Rude_Baboon What the?

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    I read this article, looked at the WD 1TB drive i just purchased and it turns out its one of these new fangled advanced format drives. Will i see any noticeable difference?
     
  7. mclean007

    mclean007 Officious Bystander

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    I think you've misunderstood. 4k is the new sector size. Instead of having a sector lead-in and a 40 or 80 byte error correction block every 512 bytes, you have a larger data block with a lead-in and a 100 byte error correction block only every 4096 bytes, significantly reducing overhead. Usable disk space (i.e. the space used for data after deducting overheads for sector lead-in and ECC) increases from approximately 87% (81% with 80 byte ECC) to 96%. How this translates - for a given size of platter, you get up to 20% capacity gain. Your 2TB disk becomes 2.4TB. That surely is worth caring about!

    See the piece at AnandTech for the techie detail - http://www.anandtech.com/storage/showdoc.aspx?i=3691&cp=4
     
  8. paisa666

    paisa666 I WILL END YOU!!!

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    @kenco... maybe you missed that little paragraph in the article :)

    Yes it affects speed.. in a good way. With bigger sectors means that for the same file or data you need to write less sectors :) while space will be used more efficiently (less sectors = less fragmented data).
     
  9. paisa666

    paisa666 I WILL END YOU!!!

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    I think you misunderstood the article, for the example you say it wouldbe 2 TB divided into sectors of 4 Kb, where the data will be stored.
     
  10. Tsung

    Tsung New Member

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    Im confused, your article starts "Starting in Q1 this year, all new hard drive models will contain the "big sector", yet the segate PR quote states "beginning January 1, 2011 all new product releases with SATA interfaces will support Advanced Formatted media"

    So which is it? 2010? or 2011? or is the segate PR quote refering to something else?
     
  11. kenco_uk

    kenco_uk I unsuccessfully then tried again

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    But I'm a grammer nazi and there's a grammatical error in the sentence quoted, so unfortunately I didn't understand it :p

    That's my excuse and I'mma stick to it.
     
  12. Evildead666

    Evildead666 New Member

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    Will we get bigger than 2TB drives ?
    With MBR limited to 2TB I was wondering what was going to happen on that front.....
     
  13. Omnituens

    Omnituens New Member

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    define "older" OS's - we talking pre-NT?
     
  14. Da_Rude_Baboon

    Da_Rude_Baboon What the?

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    It means XP. The drive i have has special instructions for making it work in XP, all newer OS is will just work.
     
  15. whiskers

    whiskers New Member

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    Uhh, no. Your 2Tb disk will NOT become a 2.4Tb disk. Rather, if you have a 2Tb disk (let's forget for a second that manufacturers talk about disk space in power of 10, while the actual space is in powers of 2, which means an advertised 2Tb will show up in your OS as 1.86Tb), with the old format you'd be able to use only 2*0.87 = 1.75Tb due to cluster overhead. The new format lets you utilize 2*0.96 = 1.92Tb.
    No way to make that hard drive you bought have more sectors.
     
  16. Farfalho

    Farfalho New Member

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    Thanks to your explanation I understood the matter a bit better. It seems advantageous, why not?! btw, how much a new hard drive with that EARS thingy?
     
  17. Guest-16

    Guest-16 Guest

    About £10-15 more, but that's also because the Green drives also have a cache upgrade from 32-64MB too.

    I'll let you know the performance difference in a few weeks - we've got a 1TB drive from WD on the way to compare it to the older EADS 1TB. :)
     
  18. azrael-

    azrael- I'm special...

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    Doesn't NTFS default to an allocation unit size of 4KB since at least Windows 2000?
     
  19. ryall

    ryall New Member

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    Oh wow, my new WD Green has it too. They've kept pretty quiet about this haven't they? You'd expect a bit of fanfare and *NEW FEATURE* hype
     
  20. Tulatin

    Tulatin The Froggy Poster

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    The downside to this is that when you get bad sectors, the damage could be worse...
     
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