[CentOS] performance lost in using a software raid array with only 1 disk

[Dennis Willson]

On Wed, 31 Jan 2007 09:41:42 -0500
  Jerry Geis <geisj at pagestation.com> wrote:
>Is there any performance lost in using a software raid array
>with only 1 disk?
>
>I was wanting to use the mdadm monitoring tools to monitor the
>machines single disk drive for failures and such. Is there any
>performance hit for such a setup?
>

For monitor drive health I would think smartd would be a better 
choice. 

>Some machines have RAID some machines dont (for me) and
>I was thinking about a common setup.
>
>Also then if I want in the future I can actually just add the second
>disk and now I have RAID.

This is not a bad idea if you plan on actually upgrading running 
machines non-RAID machines to RAID 1.

>
>Jerry
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Dennis Willson