05
Section 05 · 1 guide
File Systems & Formats
A file system either notices that your data changed underneath it, or it does not. What ZFS and Btrfs catch, and what ext4, NTFS and APFS quietly do not.
- 2ChecksumsData and metadata. Most formats only verify the second and trust the first.
- 1ScrubAn array that has never been scrubbed is an array with unknown contents.
- 0Silent errorsWhat end-to-end verification actually buys you, and what a format cannot fix.
Everything in this section
What the format quietly does and does not notice.
The other rooms
Kept running by
The Bench Roll
Eleven names who keep the lights on in this room. Listed here, marked as what they are, and never mixed into the writing.
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