Arthur Besse@lemmy.ml to Piracy: ꜱᴀɪʟ ᴛʜᴇ ʜɪɢʜ ꜱᴇᴀꜱ@lemmy.dbzer0.comEnglish · 9 months ago“It’s a Silent Fire”: Decaying Digital Movie and TV Show Files Are a Hollywood Crisiswww.hollywoodreporter.comexternal-linkmessage-square46fedilinkarrow-up1260arrow-down18cross-posted to: [email protected][email protected][email protected]
arrow-up1252arrow-down1external-link“It’s a Silent Fire”: Decaying Digital Movie and TV Show Files Are a Hollywood Crisiswww.hollywoodreporter.comArthur Besse@lemmy.ml to Piracy: ꜱᴀɪʟ ᴛʜᴇ ʜɪɢʜ ꜱᴇᴀꜱ@lemmy.dbzer0.comEnglish · 9 months agomessage-square46fedilinkcross-posted to: [email protected][email protected][email protected]
minus-squarefar_university1990@feddit.delinkfedilinkEnglisharrow-up2·9 months agoNote: zfs/btrfs cannot repair bitrot without redundancy, only detect it. But if redudancy, is repaired automatically (self-healing). Raid 1/5/6 cannot repair, only detect bitrot, cannot decide which copy good.
minus-squareNithanim@programming.devlinkfedilinkEnglisharrow-up1·edit-29 months agoI have never seen an implementation of e.g. a mirror that gives up on disagreements of both disks. Repairing/redundnancy is what raid is there for. Edit: maybe old hardware raid does not check?
minus-squarefar_university1990@feddit.delinkfedilinkEnglisharrow-up1·9 months agoNo, raid for disk failure: https://en.wikipedia.org/wiki/RAID Raid has no checksum, see argument here: https://superuser.com/questions/769104/is-raid1-or-similar-needed-for-btrfs-zfs-to-protect-against-bit-rot But look like some raid implementation (and lot of drive) have error correction now: https://en.wikipedia.org/wiki/Error_detection_and_correction#Data_storage https://serverfault.com/questions/77710/is-bit-rot-on-hard-drives-a-real-problem-what-can-be-done-about-it
Note: zfs/btrfs cannot repair bitrot without redundancy, only detect it. But if redudancy, is repaired automatically (self-healing).
Raid 1/5/6 cannot repair, only detect bitrot, cannot decide which copy good.
I have never seen an implementation of e.g. a mirror that gives up on disagreements of both disks. Repairing/redundnancy is what raid is there for.
Edit: maybe old hardware raid does not check?
No, raid for disk failure: https://en.wikipedia.org/wiki/RAID
Raid has no checksum, see argument here: https://superuser.com/questions/769104/is-raid1-or-similar-needed-for-btrfs-zfs-to-protect-against-bit-rot
But look like some raid implementation (and lot of drive) have error correction now: https://en.wikipedia.org/wiki/Error_detection_and_correction#Data_storage https://serverfault.com/questions/77710/is-bit-rot-on-hard-drives-a-real-problem-what-can-be-done-about-it