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Asus A7V133 & Linux: Hardware or Software RAID 1?

B

bubba

Golden Member

This is for a production environment, so I want to know which is more stable, not necessarily which is "cooler".

I am going to use RAID 1 (mirroring) in all servers/workstations. Using an Asus A7V133 with a built-in Promise ATA RAID controller I wonder if it would be more stable to use the onboard RAID controller, or to do a software RAID of the disks. I am using the 2.4.x series kernels and have used software RAID on a couple of i850 boxes already in production.

So, which do y'all reccommend and why?
 
Hardware RAID is always preferred. Hardware RAID uses less CPU cycles since the card has it's own dedicated cpu(at least the good ones do). The cards usually have utilitties to rebuild the array, etc. I've never done RAID with Linux, so I'm not sure how the OS handles it.
 
I've heard bad things about the Promise chip (maybe it was just with Linux). Is that chip not very good?

 
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