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RAID shares a single property with regular backups: it lets you recover from a disk failure. But backup is a separate copy of your data set aside for emergenci
by cbs 15y ago
RAID shares a single property with regular backups: it lets you recover from a disk failure.
But backup is a separate copy of your data set aside for emergencies, while raid just increases the reliability of your one, in use, copy of the data.
Heres an example: You just accidentally dropped a table from your database. Can you recover it with a backup? Can you recover it with RAID?
- brador 15y agoI guess it depends on the type of data you are backing up too. If its music/movies it's not that big an issue to get 1 corrupted file, on the other hand, corruption on critical work files could be a disaster. I say RAID is fine for a media NAS box, but for critical business files, a more thorough backup strategy is required...
- cbs 15y ago>I say RAID is fine for a media NAS box In that case I still wouldn't call it a backup. I'd just say that the array itself was failure-resistant enough that you've chosen not to maintain a backup.