My Diigo Bits 07/14/2009

July 15, 2009

  • Mining gold from others’ green drive

    tags: seagate

    • Its client, hardware manufacturer Seagate, reckoned it has saved about US$100,000 (S$146,300) per quarter since switching to the new pallets in mid-2007. That works out to a hefty $1.17 million savings in about two years.

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My Diigo Bits 05/07/2009

May 8, 2009

  • 1TB, 1.5TB, 2TB… Does Anyone Want More? - X-bit labs - Annotated

    tags: no_tag

    • Take note that there are no products with three or four platters in this series although they might have been expected
      • FPR太低，yield pass rate 可能对于3、4张碟来说不理想。 - post by hdd2006
    • In other words, WD increased storage capacity twofold in a single jump!
    • The same WD Caviar Green series with 32MB buffer also includes a 3-platter 1.5-terabyte model. A 1-terabyte drive based on two platters is only a matter of time (the manufacturer is waiting until it has enough platters in stock).
      • 看着很奇怪的说法，明明没那么多碟片，不多做2碟却先上市4碟的，因4碟的卖的贵。 - post by hdd2006
    • IBM DTLA-307015 system disk, 15GB
      • 拜托，老大，这硬盘可以换换了，也太robust了吧。 - post by hdd2006
    • And there is one more thing to be noted: Seagate’s drives draw rather smooth data-transfer graphs whereas the new drive from Western Digital has very wild fluctuations of speed at the beginning of the partition. Yes, achieving such a high recording density has not been easy for anyone. With Western Digital, the speed depends heavily on the lucky combination of platter surface and head.
      • 啥意思，WD 5400转都控制不好？这也太说不过去了。 - post by hdd2006

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My Diigo Bits 03/26/2009

March 27, 2009


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My Diigo Bits 02/27/2009

February 28, 2009

  • 中国的确需要改变了 - 译言翻译

    图很有意思。尤其第一张。小日本太彪悍了。真希望我们也Change一下。

    tags: Change

    • 但是为什么中国的制造商们不多做些努力来提高他们的产品质量呢？往好的解释就是中国正经历着当年日本曾经经历的同样的问题，但是在这样一个动辄就起诉的以消费者为中心的年代，每个瑕疵都会被放大。

          虽然这是有原因的，但是日本全国对的质量情结早在战后的工业化期间就已经很明显了，当时日本采用了美国质量监控专家W.Edwards Deming的主张。一些公司比如洪达（Honda ）凭借高质量低价位的优势击败了英国的摩托车行业；索尼和松下以同样的方式击败了美国的收音机和电视机制造商。几乎所有这些公司都是为其它厂家生产部件起步的（索尼现在仍然在为其它公司生产），但是也都同样立志于制造出众的产品来创造自己的品牌。说到这些公司有长期规划无疑是暗指松下集团创始人松下幸之助的，因为他为公司起草了一份千年计划。


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My Diigo Bits 02/11/2009

February 12, 2009


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My Diigo Bits 01/11/2009

January 12, 2009


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My Diigo Bits 12/29/2008

December 30, 2008


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My Diigo Bits 06/17/2008

June 18, 2008

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My Diigo Bits 09/13/2007

September 14, 2007

5th USENIX Conference on File and Storage Technologies - Paper

怎样把稻草变成金条？ — 探长日记

你对磁盘的认识全都错了 — 探长日记

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My Diigo Bits 06/28/2007

June 29, 2007

鸿海精密是敌是友？——第一部分
鸿海精密是敌是友？——第一部分  Annotated

    一个佐证是，鸿海精密具有能将iPod nana机壳背面打磨得如同镜面一样的加工水平。这个结论得自于对客户企业评论的综合评判。要想快速研磨硬质不锈钢，需要具备丰富的技术与经验。因此直到数年前，这项业务还只有具备丰富经验的日本新泻县燕三条市的一家金属加工企业能够承担。但令人吃惊的是，目前除检查以外，鸿海精密已经能够以半自动的机械化方式进行镜面加工了。
      从材料、元器件到产品（成品）、服务及内容等各个行业，在表示附加值高低的“微笑曲线”上，作为鸿海精密最大收入来源的产品制造就位于其“底”部。也就是说，要想获得高收益率并非易事。然而，鸿海精密2005年度营业利润率达到了5.4%，超过了位于微笑曲线“上缘”的绝大多数大型电子厂商。营业利润率仅有1.9%的Flextronics公司和营业亏损额达505亿日元的美国Sanmina-SCI公司更难望其项背。

        【CEATEC】TDK采用新型硬盘TMR磁头，实现面记录密度超300Gbit –技术在线!
        【CEATEC】TDK采用新型硬盘TMR磁头，实现面记录密度超300Gbit --技术在线!  Annotated

          悬浮量的控制功能是在低温条件下更能发挥作用。原因在于低温条件下，介质的磁矫顽力会增高，而且滑动头收缩后会远离介质，因此不易进行读写。“在什么条件下，如何运用悬浮量的控制功能，那就看厂硬盘厂商的技术水平了”（TDK）。

            【CES】日立全球存储科技的1TB硬盘亮相–技术在线!
            【CES】日立全球存储科技的1TB硬盘亮相--技术在线!  Annotated

              可看见内部的透明外壳
                磁头为自主开发产品

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