Bit Rot
The slow, silent corruption of stored data over time due to hardware imperfections.
Traditional filesystems can't detect bit rot, so a photo may quietly become unreadable. Checksumming filesystems like ZFS and Btrfs detect and repair it when redundancy is present.
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Checksum
A small fingerprint of data used to detect corruption or verify integrity.
ZFS
An advanced filesystem and volume manager offering data integrity, snapshots, compression and software RAID.
ECC RAM(Error-Correcting Code Memory)
Mémoire qui détecte et corrige les erreurs mono-bit, améliorant l'intégrité des données sur les serveurs 24h/24.