On Fri, Sep 23, 2005 at 02:31:55PM +0100, Paul Brook wrote:
> Depends on your definition of "better".
> 
> Hardware raid does allow you to offload some processing from the main system 
> to the RAID card. However you need to bear in mind that volumes created with 
> a hardware raid card will only work with that type of card, so It's advisable 
> to have spare cards in case one dies. With Linux software raid the volumes 
> will work in any linux machine.

Certainly handy for getting up and running after a hardware failure.

> In terms of data integrity both should be equivalent, though make sure your 
> hardware card has battery backup.

Or does not do any write caching.

> Unless you know you need hadware RAID I generally recommend going with 
> software raid and spending the money you save on more memory, faster CPU, or 
> more disks :-)

Lennart Sorensen


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