Redundant Array of Inexpensive Disks (RAID) is a type of protection available in Teradata. RAID provides Data protection at the disk Drive level. It ensures data is available even when the disk drive had failed.
There are around 6 levels of RAID ( RAID0 to RAID5) .
Teradata supports two levels of RAID protection
RAID 1 - Mirrored copy of data in other disk
RAID 5 - Parity bit (XOR) based Data protection on each disk array.
One of the major overhead's of RAID is Space consumption
RAID 1 - Mirrored copy of data in other disk
RAID 5 - Parity bit (XOR) based Data protection on each disk array.
One of the major overhead's of RAID is Space consumption
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