组合冷凝 斐波拉契_外部USB硬盘是否有内部冷凝的风险？

组合冷凝 斐波拉契

While most of us do not need to pack our external hard-drives with us everywhere we go, there are some people who may need to carry them wherever they travel. With that in mind, can noticeable differences in temperature have a negative impact on those hard-drives? Today’s SuperUser Q&A post has the answers to a worried reader’s questions.

虽然我们大多数人不需要在任何地方随身携带外部硬盘驱动器，但无论到哪里旅行，都有一些人可能需要随身携带它们。 考虑到这一点，明显的温度差异会对这些硬盘驱动器产生负面影响吗？ 今天的“超级用户问答”帖子为读者提供了一个令人担忧的问题的答案。

Today’s Question & Answer session comes to us courtesy of SuperUser—a subdivision of Stack Exchange, a community-driven grouping of Q&A web sites.

今天的“问答”环节由SuperUser提供，它是Stack Exchange的一个分支，该社区是由社区驱动的Q＆A网站分组。

Photo courtesy of Gillware Data Recovery (YouTube).

照片由Gillware Data Recovery(YouTube)提供。

问题 (The Question)

SuperUser reader misha256 wants to know if external USB hard-drives are at risk from internal condensation:

SuperUser阅读器misha256想知道外部USB硬盘是否受到内部冷凝的威胁：

Apparently, you can kill a USB hard-drive by moving it from a cold temperature environment to a warm one and powering it up (the killer being internal condensation).

显然，您可以通过将USB硬盘驱动器从低温环境移至温暖的环境并加电来杀死USB硬盘驱动器(杀手是内部结露)。

How real is the risk? What kind of temperatures are we talking about? I do not want to waste time acclimatizing my hard-drive every day if it is not necessary. Are there technologies or solutions available to mitigate the risk?

风险有多真实？ 我们在谈论什么样的温度？ 如果不想，我不想每天浪费时间来使我的硬盘适应环境。 是否有降低风险的技术或解决方案？

Surprisingly, I have found nothing useful on the Internet that provides satisfactory answers to my questions.

令人惊讶的是，我发现在互联网上没有任何有用的东西可以为我的问题提供令人满意的答案。

Are external USB hard-drives at risk from internal condensation?

外部USB硬盘驱动器是否有内部凝结的危险？

答案 (The Answer)

SuperUser contributor harrymc has the answer for us:

超级用户贡献者harrymc为我们提供了答案：

Condensation is a real danger for hard-drives. You can see in a real-life YouTube demonstration by a data-recovery specialist what a hard-drive looks like when taken out of a freezer and briefly turned on (it is full of scratches):

冷凝对于硬盘驱动器是真正的危险。 您可以在数据恢复专家的真实YouTube演示中看到从冰柜中取出并短暂打开时硬盘驱动器的外观(充满划痕)：

Such scratches could possibly damage the hard-drive to a point where even a data-recovery specialist would be unable to recover the data. A Control Data (later Seagate) factory packaging manual for hard-drives says:

这样的刮擦可能会损坏硬盘驱动器，甚至使数据恢复专家也无法恢复数据。 硬盘驱动器的《控制数据》(希捷公司后来发布)工厂包装手册说：

• If you have just received or removed this unit from a climate with temperatures at or below 50°F (10°C), do not open this container until the following conditions are met, otherwise condensation could occur and damage to the device and/or media may result. Place this package in the operating environment for the time duration according to the following temperature chart.
  如果您刚刚将本设备从温度在50°F(10°C)或以下的气候环境中接收或取出，请在满足以下条件之前不要打开该容器，否则可能会凝结并损坏设备和/或设备。可能会产生媒体。 根据以下温度图表，将此包装放置在操作环境中持续一段时间。

It seems that dangerously low temperatures start when a computer is brought in from temperatures below 50°F (10°C) into a room-temperature area and it may need several hours for acclimatization. This long time is explained by the fact that in a mechanical hard-drive, the head is supported by airflow entering through special air-intakes. These intakes are heavily filtered against dust, but not against humidity. They are also small enough that it slows down the evaporation process of internal humidity.

将计算机从低于50°F(10°C)的温度带入室温区域时，开始出现危险的低温状态，可能需要几个小时才能适应环境。 长时间的解释是，在机械硬盘驱动器中，磁头由通过特殊进气口进入的气流支撑。 这些进气口经过了严格的防尘过滤处理，但没有防潮处理。 它们还足够小，可以减慢内部湿度的蒸发过程。

You could possibly minimize the acclimatization time by wrapping the disk in watertight plastic while it is acclimatizing in order to reduce the humidity that would enter via the air-intakes. You should allow for some drying-off time after unwrapping the disk (for the humidity in the air already contained inside the disk).

您可以在磁盘适应环境时将其包裹在不透水的塑料中，以减少适应时间，从而减少通过进气口进入的湿度。 打开磁盘包装后，应留出一些干燥时间(以防止磁盘中已经包含的空气湿度)。

This is not the only danger, as explained by data-recovery specialist ReWave Recovery:

正如数据恢复专家ReWave Recovery所解释的那样，这不是唯一的危险：

• A hard-drive is at risk for sudden temperature changes including overheating and condensation.
  硬盘驱动器存在温度突然变化(包括过热和冷凝)的风险。
• A sudden change in temperature that causes condensation inside the hard-drive can cause the material on the platter to evaporate which causes the read/write heads to stick to the platter and stop it from rotating.
  温度的突然变化会导致硬盘驱动器内部凝结，从而导致盘片上的材料蒸发，从而导致读/写头粘在盘片上并停止旋转。
• Overheating can also be an issue. Overheating can cause the platters to expand which makes the read/write heads travel farther to read the data. The expansion of platters can cause friction which can lead to a head crash.
  过热也可能是一个问题。 过热会导致磁盘膨胀，从而使读/写头移动得更远，以读取数据。 盘片的膨胀会引起摩擦，从而导致磁头碰撞。

Have something to add to the explanation? Sound off in the comments. Want to read more answers from other tech-savvy Stack Exchange users? Check out the full discussion thread here.

有什么补充说明吗？ 在评论中听起来不错。 是否想从其他精通Stack Exchange的用户那里获得更多答案？ 在此处查看完整的讨论线程。

翻译自: https://www.howtogeek.com/234640/are-external-usb-hard-drives-at-risk-from-internal-condensation/

组合冷凝 斐波拉契