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On 30/09/11 04:11, Mike Dresser wrote:
> Just finishing up moving one of my backuppc servers to new larger disks, 
> and figured I'd submit a success story with backuppc_tarpccopy... I 
> wanted to create a new xfs filesystem rather than my usual dd and 
> xfsgrowfs, as this thing has been in use since backuppc 2.1 or similar.  
> Old disks were 10 x 1TB in raid10, new is 6 x 3TB's in raid6 (which in 
> itself has been upgraded many times).. the new raid6 is FAR faster in 
> both iops and STR than the old one.

Hi,

I'm curious that you say you are getting better performance from the new
RAID6 compared to the old RAID10.

Can I assume this is because the new HDD's perform better than the old?
In other words, would it be safe to assume you would get even better
performance using RAID10 with the new HDD's than you are getting with RAID6?

I'm just curious, I'm fairly confident that RAID10 always performs
better than RAID5 or RAID6. Just want to make sure I'm not making a mess
of things by using RAID10 over RAID6.

Can anyone suggest any advantage of RAID6 over RAID10 (aside from the
obvious additional storage capacity/reduced wastage of space)?

Thanks,
Adam

- -- 
Adam Goryachev
Website Managers
www.websitemanagers.com.au
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