Filesystems — Inodes, Links, Journaling, ext4/XFS/Btrfs/ZFS/APFS/NTFS
Core filesystem concepts every operator should know: inodes, directory structure, hard vs symbolic links, journaling, copy-on-write, and a head-to-head of ext4, XFS, Btrfs, ZFS, APFS, and NTFS with mount options and pitfalls.