One very interesting reliability improvement for ATA HDDs is protection against shock, sudden jolts that can destroy HDDs in laptop computers.

ATA HDD 的一个非常有趣的可靠性改进就是震动保护，这种突然的晃动会破坏笔记本电脑的 HDD。

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Therefore, seek time continues to be the largest source of latency in HDDs.

因此，寻道时间一直是HDD的延迟时间的最主要来源。

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But although SSD costs are declining every quarter, SSDs are still more expensive than HDDs.

但是，虽然SSD的成本每个季度都在递减，但是SSD仍然比HDD昂贵。

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Toshiba has not indicated a great interest in the past to make 3.5-inch HDDs as it has focused on 2.5-inch and smaller HDDs.

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Based upon WD and Seagate discussions in their quarterly conference calls last week calendar Q4 2011 will probably see a short fall of 20-40 million HDDs compared to demand of 170-175 million drives total.

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HGST, part of Western Digital, has announced that it will make He-filled HDDs that can support a couple more disks in a 5 disk 3.5-inch HDD package.

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