And as you exit the mountain front, you go out into the fan.

当您离开山前时， 您会进入扇区。

Where all the sectors are translated into different locations inside the 18 different NAND flash chips.

所有扇区都被翻译到18个不同NAND闪存芯片内的不同位置。

There, the astronomer Jean Piccard devised an impressively complicated method of triangulation involving quadrants, pendulum clocks, zenith sectors, and telescopes.

在那里， 天文学家让·皮卡德 （Jean Piccard） 设计了一种令人印象深刻的复杂三角测量方法，涉及象限、摆钟、天顶扇区和望。

After that, we have the actual data that's stored, typically 4 kilobytes of data per sector.

之后，我们有实际存储的数据，通常每个扇区存储4千节的数据。

For example, When you store a picture, your computer tells the SSD to store the picture's data in a set of unused sectors.

例如，当你存储一张图片时， 你的电脑会态硬盘将图片的数据存储在一组未使用的扇区中。

And then the error-correcting code at the back of the sector is used to ensure no data is lost.

然后扇区后面的纠错码会被用来确保没有数据丢失。

And in the process, we'll look at the tracks, sectors, and magnetic domains of the metal disk.

在这个过程中，我们将查看金属盘上的磁道、扇区和磁性区域。

The next part of the sector is the address, which helps the read-write head know which track and sector it's currently positioned over.

扇区的下一部分是地址，这有助于读写头知道它当前位于哪一条磁道和哪个扇区上。

So you'll get a sector that has a valid checksum for the database, but it's the wrong, now you need to daisy chain your checksums.

所以你会得到一个对数据库具有有效校验和的扇区，但它是错误的， 现在你需要串联你的校验和。

And finally, there's a gap between this sector and the next, which allows the read-write heads some tolerance when writing the contents of a block.

而且最后， 在这个扇区和下一个扇区之间有一个间隙，这允许读写头在写入块内容时有一定的容差。

So disks do very rarely, but 1%, you know, in a year or two, a disk will have some kind of, you know, corruption or latent sector error.

所以磁盘确实很少会出现问题，但大约1%的磁盘会在一两年内出现某种形式的损坏或潜在扇区错误。

To fix this, in each sector, the preamble is simply a set of alternating domains and is used to set the size of each domain.

为了修复这个问题，在每个扇区中，前导码只是一个交替的磁性区域集合，用于设置每个磁性区域的大小。

Note that this type of translation is also called a logical-to-physical translation, where your computer only sees what sectors the picture is stored in, but the SSD knows the physical locations.

请注意， 这种类型的转换也称为逻辑到物理转换，其中你的计算机只知道图片存储在哪些扇区，但SSD知道实际位置。

From the perspective of your computer, the SSD is just a massive set of sectors of data, each the size of 512 bytes, and thus this 8 terabyte drive has 15 billion sectors.

从你的电脑角度来看，态硬盘就是一个巨大的数据扇区集合，每个扇区大小为512节， 因此这块8TB的硬盘有150亿个扇区。

These tracks are then divided into sectors, and in each sector is a preamble or synchronization zone, which tells the read-write head the exact speed of the spinning disk and the length of each bit of data.

这些磁道被进一步划分为扇区，每个扇区中都有一个前导码或同步区，它读写头磁盘旋转的确切速度以及每比特数据的长度。