Digimer: Created page with '{{fs_header}} Redundant Array of Inexpensive Disks. This is a collection of storage devices (traditionally platter-based hard drives) used together in one of 6 base "le…'

2009-10-11T09:13:03Z

Created page with '{{fs_header}} Redundant Array of Inexpensive Disks. This is a collection of storage devices (traditionally platter-based hard drives) used together in one of 6 base "le…'

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Redundant Array of Inexpensive Disks.

This is a collection of storage devices (traditionally platter-based [[HDD|hard drives]]) used together in one of 6 base "levels" to provide redundancy. RAID level 0 is not a true RAID level, but is often referenced and thus worth noting. It is not, however, redundant.

* RAID0 - [[Stripe_(RAID)|Striping]] only, NO redundancy (not a true RAID level)
* RAID1 - [[Mirror_(RAID)|Mirroring]] only.
* RAID2 - Proprietary RAID level that is rarely used and largely redundant thanks to error-correction on modern storage devices.
* RAID3 - Parity and Striping, dedicated [[Parity_(RAID)|parity]] disk, large [[block]] sizes.
* RAID4 - Parity and Striping, dedicated parity disk, small block sizes.
* RAID5 - Parity and Striping, parity evenly distributed across all member drives.
* RAID6 - Same as RAID5 but with 2x parity.

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RAID - Revision history

Digimer: Created page with '{{fs_header}} Redundant Array of Inexpensive Disks. This is a collection of storage devices (traditionally platter-based hard drives) used together in one of 6 base "le…'