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CONFIG_MD_RAID6: RAID-6 mode (EXPERIMENTAL)

General informations

The Linux kernel configuration item CONFIG_MD_RAID6 has multiple definitions:

RAID-6 mode (EXPERIMENTAL) found in drivers/md/Kconfig

The configuration item CONFIG_MD_RAID6:

Help text

WARNING: RAID-6 is currently highly experimental. If you use it, there is no guarantee whatsoever that it won't destroy your data, eat your disk drives, insult your mother, or re-appoint George W. Bush.

A RAID-6 set of N drives with a capacity of C MB per drive provides the capacity of C * (N - 2) MB, and protects against a failure of any two drives. For a given sector (row) number, (N - 2) drives contain data sectors, and two drives contains two independent redundancy syndromes. Like RAID-5, RAID-6 distributes the syndromes across the drives in one of the available parity distribution methods.

RAID-6 requires mdadm-1.5.0 or later, available at:

ftp://ftp.kernel.org/pub/linux/utils/raid/mdadm/

If you want to use such a RAID-6 set, say Y. To compile this code as a module, choose M here: the module will be called raid6.

If unsure, say N.

RAID-6 mode found in drivers/md/Kconfig

The configuration item CONFIG_MD_RAID6:

Help text

A RAID-6 set of N drives with a capacity of C MB per drive provides the capacity of C * (N - 2) MB, and protects against a failure of any two drives. For a given sector (row) number, (N - 2) drives contain data sectors, and two drives contains two independent redundancy syndromes. Like RAID-5, RAID-6 distributes the syndromes across the drives in one of the available parity distribution methods.

RAID-6 requires mdadm-1.5.0 or later, available at:

ftp://ftp.kernel.org/pub/linux/utils/raid/mdadm/

If you want to use such a RAID-6 set, say Y. To compile this code as a module, choose M here: the module will be called raid6.

If unsure, say Y.

Hardware

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