With sequential access, the disk head can move directly to the next available track on the disk.

使用顺序访问，磁盘头可以直接移动到磁盘的下一个可用磁道。

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As mentioned above, random access requires the disk head to move randomly over the disk to find the proper data points.

正如上文提到的，随机访问要求磁盘头能随机移动到磁盘上，查找对应的数据点。

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Then, the server's disk head had to move randomly over all areas of the disk to get to the proper track and sector for the data that was changed or updated.

然后，服务器的磁盘头随机移动到磁盘的各个区域查找更改或更新过数据的磁道或扇区。

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So as the particles on the disk that get the current in the read/write head moving put together millions of these magnetized segments and you've got a file.

通过读写头你就可以得到每个粒子的极性,如果把这些上百万粒子的信息,汇聚要一起就够成了一个文件。

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Getting to that stage might mean combining self-assembly methods with lithography, or doing away with the head that reads the data-packed disk and instead creating a self-assembling solid-state system on the model of Flash memory storage used today.

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However, the new drive will be significantly slower when writing to the older 100MB disks -- because of the head design changes needed to increase per-disk capacity.

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