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We strongly recommend that you consult the current technical information on SME Raid at http://wiki.contribs.org/Raid before commencing an install.
 
We strongly recommend that you consult the current technical information on SME Raid at http://wiki.contribs.org/Raid before commencing an install.
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=====Hardware Mirroring=====
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=====Hardware RAID=====
With hardware mirroring, you use a special RAID disk controller to perform the actual mirroring across multiple disks. As mirroring is performed in hardware, the performance may be faster than software mirroring. Additionally it can simplify configuration because to the operating system the entire RAID disk system looks like one single disk. You should be able to use any supported SATA or SCSI hardware RAID controller. NB: other options than mirroring may be supported by the controller.
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With hardware RAID, you use a special RAID disk controller to perform the actual striping across multiple disks. As RAID is performed in hardware, the performance may be faster than software mirroring, depending on the capabilites of the various hardware. Additionally Hardware RAID can simplify configuration and array rebuilds because to the operating system, the entire RAID disk system looks like one single disk. You should be able to use any supported SATA or SCSI hardware RAID controller. NB: other options than mirroring may be supported by the controller.
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** If you are going to use hardware mirroring, you should NOT choose Install - Dual hard disk with software RAID-1 mirroring during the installation process described in section 1.5.4. Installing the Software. (Doing so will enable software mirroring.) Instead, you should do a regular installation of the software. See [[Booting]]
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** If you are going to use hardware RAID, you should NOT choose Install - Dual hard disk with software RAID-1 mirroring during the installation process described in section 1.5.4. Installing the Software. (Doing so will enable software mirroring.) Instead, you should do a regular installation of the software. See [[Booting]]
    
====Upgrading From A Previous Version====
 
====Upgrading From A Previous Version====

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