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About.com: Linux RAID Revisited

Dec 23, 2000, 13:38 (0 Talkback[s])
(Other stories by Aron Hsiao)


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"The Linux software RAID code has been updated for the 2.4 kernel series and has been "backported" to the 2.2 kernel series in patch form. The new RAID code provides several benefits:

  • Increased performance.
  • Increased stability.
  • More uniform and well-documented configuration through /etc/raidtab.
  • Automatic RAID volume recognition without the need for scripts."
"In order to use the new RAID system, you'll need first to get the latest release of the RAID tools. You'll also need to compile RAID support into your kernel. For 2.4 kernels, enable the following:
  • CONFIG_MD=yes
  • CONFIG_MD_RAID0=yes (for striping)
  • CONFIG_MD_RAID1=yes (for mirroring)
  • CONFIG_MD_RAID5=yes (for striping with distributed parity)
For 2.2 kernels, you'll net to get the RAID patch which matches your kernel and apply it. Most patches can be found in the RAID tools directory, but for the most recent 2.2 kernels, you may also want to check Ingo Molnar's RAID patches directory."

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