Re: software disk mirroring (raid-1) and cluster?

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On Fri, 2007-11-09 at 13:00 -0500, Jeff Wasilko wrote:
> Hi:
> 
> We're considering moving an application from Solaris (and Sun's cluster 
> software) to Linux (and RHCS). The application (campus-wide mail) has 
> stringent data availability requirements, so currently we are doing 
> host-based mirroring between 2 totally separate hardware arrays.
> 
> Can I use the MD (multi-device) software to mirror under RHCS?

You can't use md from multiple nodes in a cluster in a sane way.  It
might work, but it'd be purely accidental.

I believe the technology you need to look in to is cluster mirroring.

-- Lon


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