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Hard-drive caches

ÆthelredÆthelred Registered User regular
edited November 2006 in Help / Advice Forum
So I'm still choosing a computer. :) Can anyone educate me on HDD speeds please? I basically have a choice between 2x 250GB, or a single 500GB which has a 16MB buffer, instead of 8MB. Is that buffer a significant difference in fetching files quickly? ie, a $40 one.. Thanks!

edit: both SATA

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    RuckusRuckus Registered User regular
    edited November 2006
    Cache has little effect on overall transfer speed.

    I can tell you that 2 250GB drives in a Hardware RAID 0 array would have slightly better performance than a single 500GB, but the difference would probably be negligable.

    Data wise single driver vs RAID0 your risk is about the same. A catastrophic drive failure of one drive results in complete data loss, though I guess running two seperate drives you double your chances that one of them will fail...

    Somebody in statistics pls correct my retarded math.

    Ruckus on
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    robaalrobaal Registered User regular
    edited November 2006
    The difference between 16MB cache and 8MB isn't big. The bigger drive will be faster because the data on it is denser, but again - the difference isn't big. You probably wouldn't notice it.

    There are 250GB drives with a 16MB cache though, in fact newegg has such a drive from WD at $60 ATM.


    edit: there is a large difference between 2MB and 8MB cache though

    robaal on
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    ÆthelredÆthelred Registered User regular
    edited November 2006
    Okay, so not a significant difference; shall use the saved $40 on another component. Thanks both.

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