usb共享驱动下载

If you have multiple hard drives connected to a USB hub, does copied data move through the computer first or directly through the USB hub itself? Today’s SuperUser Q&A post has the answers to a curious reader’s questions.

如果您有多个硬盘驱动器连接到USB集线器，复制的数据是先在计算机中移动还是直接通过USB集线器本身移动？ 今天的“超级用户问答”帖子回答了好奇的读者的问题。

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 .

图片由 。

问题 (The Question)

SuperUser reader IAmJulianAcosta wants to know if two USB hub connected drives could transfer data directly via the USB hub and completely bypass the computer:

超级用户阅读器IAmJulianAcosta想知道两个USB集线器连接的驱动器是否可以直接通过USB集线器传输数据并完全绕过计算机：

If I connect two USB drives to an external hub and I copy data from one drive to the other, does the data go through the computer or will the USB hub manage the data? Does this have some performance benefit?

如果我将两个USB驱动器连接到外部集线器，并且将数据从一个驱动器复制到另一个驱动器，那么数据是否通过计算机传输，或者USB集线器将管理数据？ 这对性能有好处吗？

What route will the data take when being copied from one USB drive to the other?

将数据从一个USB驱动器复制到另一个USB驱动器时，将采取什么路线？

答案 (The Answer)

SuperUser contributors lzam, Luu Vinh Phuc, and fixer1234 have the answer for us. First up, lzam:

超级用户贡献者lzam，Luu Vinh Phuc和fixer1234为我们找到了答案。 首先，lzam：

No, this will not work. All the data you are copying will need to be read by the computer from the source drive before it is copied to the target drive.

不，这不起作用。 计算机将需要从源驱动器中读取您要复制的所有数据，然后再将其复制到目标驱动器中。

If anything, having two hard-drives connected to the same USB hub might slow things down. If you have multiple devices connected to the hub, they have to share the bandwidth.

如果有的话，将两个硬盘驱动器连接到同一USB集线器可能会减慢速度。 如果您有多个设备连接到集线器，则它们必须共享带宽。

Followed by the answer from Luu Vinh Phuc:

随后是Luu Vinh Phuc的回答：

USB is a host-driven protocol, not a peer-to-peer standard like firewire. Drives are just devices, they are not hosts that control or decide anything. Without the host, they cannot even interact with the outside world.

USB是主机驱动的协议，而不是像Firewire这样的对等标准。 驱动器只是设备，它们不是控制或决定任何内容的主机。 没有主持人，他们甚至无法与外界互动。

Assuming that you can connect the two drives like that, how will they know which files and/or folders you want to copy? How will they know which drive to copy from and will they overwrite duplicated files? How will they behave if the drives are full?

假设您可以像这样连接两个驱动器，它们将如何知道要复制哪些文件和/或文件夹？ 他们将如何知道要从哪个驱动器进行复制，并将覆盖重复的文件？ 如果驱动器已满，它们将如何工作？

And our final answer from fixer1234:

而来自fixer1234的最终答案是：

A USB hub is just a way to share a connection to the computer when you do not have enough USB ports for all the devices you want to connect. Devices connected to the computer through a USB hub never talk to each other. The USB hub ensures that traffic between the computer and the connected devices goes to and from the right device as if each was literally connected to a USB port on the computer.

当您没有足够的USB端口用于所有要连接的设备时，USB集线器只是共享与计算机的连接的一种方法。 通过USB集线器连接到计算机的设备永远不会相互通信。 USB集线器可确保计算机与连接的设备之间的通信往返于正确的设备，就像每个设备实际上都已连接到计算机上的USB端口一样。

There is no performance benefit and there may be a performance detriment. The USB hub itself is connected to the computer through a USB connection, so everything connected to the USB hub has to share the bandwidth of that connection. Hard-drives can consume a lot of the USB hub’s bandwidth and affect the performance of other devices attached to the USB hub. You generally do not want to connect hard-drives through a USB hub at all because of that.

没有性能优势，并且可能会损害性能。 USB集线器本身通过USB连接连接到计算机，因此连接到USB集线器的所有设备都必须共享该连接的带宽。 硬盘驱动器会占用USB集线器的大量带宽，并影响连接到USB集线器的其他设备的性能。 因此，您通常根本不想通过USB集线器连接硬盘驱动器。

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

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？ 。

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usb共享驱动下载