STEM与日常科技·英语30篇（3）

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ZFS校验和机制与静默数据损坏防护

ZFS computes a cryptographic checksum for every block of data written to disk.
When reading data back, ZFS recalculates the checksum and compares it with the stored value.
If they don’t match, ZFS knows the data has changed unexpectedly—this is silent corruption.
Unlike traditional file systems, ZFS can often repair corrupted blocks using mirrored copies or RAID-Z parity.
Silent corruption may happen due to aging hardware, cosmic rays, or firmware bugs in SSD controllers.
Because checksums are stored separately from data, even disk firmware errors rarely hide the mismatch.
ZFS verifies integrity not just on read, but also during background scrubbing operations.
This end-to-end protection ensures databases, archives, and scientific datasets remain trustworthy over years.
Without such checks, corrupted files might go unnoticed until critical analysis fails mysteriously.
ZFS treats data integrity as non-negotiable—not optional, not deferred, but enforced at every layer.

听 → 读 → 学表达 → 懂 → 今天会说这一句 → 跟读录音 → 自己说一句。

ZFS computes a cryptographic checksum for every block of data written to disk. ZFS 为写入磁盘的每个数据块计算加密校验和。
ZFS verifies integrity not just on read, but also during background scrubbing operations. ZFS 不仅在读取时验证完整性，还在后台清理（scrubbing）过程中持续检查。
This end-to-end protection ensures databases, archives, and scientific datasets remain trustworthy over years. 这种端到端保护确保数据库、归档文件和科学数据集多年保持可信。

这篇中文题目最接近哪一句？ ZFS校验和机制与静默数据损坏防护一次学校运动会的通知一份超市购物清单

课文第一句的意思更接近？ ZFS 为写入磁盘的每个数据块计算加密校验和。今天学校放假了。请把窗户打开。

这一课主要在讲什么？（看英文标题） ZFS Checksums and Silent Data Corruption Detection How to cook noodles A maths worksheet

ZFS computes a cryptographic checksum for every block of data written to disk.

ZFS computes a cryptographic checksum for every block of data written to disk.

第一版：录下来、回听、再听标准音。系统打分以后再加。

用今天的表达，自己说一句。

例子：ZFS computes a cryptographic checksum for every block of data written to disk.