Navigation: Linux Kernel Driver DataBase - web LKDDB: Main index - M index

CONFIG_MD_RAID456: RAID-4/RAID-5/RAID-6 mode

General informations

The Linux kernel configuration item CONFIG_MD_RAID456:

Help text

A RAID-5 set of N drives with a capacity of C MB per drive provides the capacity of C * (N - 1) MB, and protects against a failure of a single drive. For a given sector (row) number, (N - 1) drives contain data sectors, and one drive contains the parity protection. For a RAID-4 set, the parity blocks are present on a single drive, while a RAID-5 set distributes the parity across the drives in one of the available parity distribution methods.

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.

Information about Software RAID on Linux is contained in the Software-RAID mini-HOWTO, available from http://www.tldp.org/docs.html#howto. There you will also learn where to get the supporting user space utilities raidtools.

If you want to use such a RAID-4/RAID-5/RAID-6 set, say Y. To compile this code as a module, choose M here: the module will be called raid456.

If unsure, say Y.

Hardware

LKDDb

Raw data from LKDDb:

Sources

This page is automaticly generated with free (libre, open) software lkddb(see lkddb-sources).

The data is retrived from:

Automatic links from Google (and ads)

Custom Search

Popular queries:

Navigation: Linux Kernel Driver DataBase - web LKDDB: main index - M index

Automatically generated (in year 2014) with gen-web-lkddb.py in lkddb-sources.