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什么硬盘都弱爆了 富士胶片:400TB磁带在路上

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无论机械硬盘还是固态硬盘,都在极力追求更大的容量,但是说起长期、大容量存储,老而弥坚的磁带仍然有着无可比拟的优势。富士胶片(FujiFilm)今天公布了远至2030年的磁带存储技术路线图,直奔400TB而去!

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目前磁带的存储密度为每平方英寸8Gb,而机械硬盘还徘徊在1.xGb。2017年的时候,、就展示了201Gb每平方英寸的磁带存储技术,但要到2026年才会投入量产。

现在富士胶片进一步提高到了224Gb每平方英寸,从而做到400TB级别的整体容量(严格来说是384TB),只不过还要等10年才能量产。

富士胶片能取得如此进步,主要原因是将现有磁带存储中的钡铁氧体(BaFe)更换为锶铁氧体(SrFe)。

在元素周期表中,锶的位置比钡高一行,其原子也小得多,从而可以放置更多存储单元,而且性能属性表现基本一致,从而同时得到更大容量、更高性能。

按照目前的发展趋势,磁带存储平均每2.5年容量翻一番,富士胶片提出的2030年搞定400TB磁带也是符合这一趋势的。

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容量稳步前进的同时,磁带的性能也在同步提升,但一直跟本不上容量的节奏。

目前的LTO-8级别写入速度为360MB/s,12TB容量需要9个多小时才能填满。400TB(384TB)的速度能有多快还不好说,但是估计200TB的会做到2.4GB/s,但即便如此填满也得22个多小时。

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