RAID 0 - Striping without parity, high performance no fault tolerance, RAID 1 - mirroring,  duplicates data for fault tolerance but requires twice the disk space, RAID 5 - striping with parity , fault tolerance most redundancy 3 disks, RAID 10 - requires at least four physical disks and a RAID compatible disk controller. Whenever data is written to the server, it is written across several disks at the same time., incremental backup - new files and files modified last back up, full backup - all selected data , differential backup - all data modified since last full backup,

RAID/backups/ v2

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