Computer filesystems: RAID dead. ZFS and BTRFS instead.

[Brickjectivity]

If you were once into filesystems and have been out of it for a while watch this video:

Spoiler: RAID is dead video

Most of us are not cutting edge admins. I think this video introduces very well major developments in filesystems.

Hardware support for parity checking has changed, thus making RAID 5 and 6 ineffectual against 'Bit rot'. In response admins have begun using file systems that are RAID aware and that check for parity. The main one that has been in use now for several years is ZFS. Another is BTRFS.

So when you hear about these: ZFS and BTRFS the reason is that they provide parity checking. ZFS provides the most parity checking, and BTRFS provides some checking and has some additional features.

 

[Stevicus]

Well, at least Raid will still kill bugs dead.

 

[dybmh]

Interesting video. I've never counted on Raid to protect against data corruption. I use a versioning backup system for that ( dirvish on a linux OS or Syncback on Microsoft ). I use Raid strictly to protect against HW failure.