db performance
Wojciech Puchar
wojtek at wojtek.tensor.gdynia.pl
Thu Jan 17 13:53:57 PST 2008
>> is used)? what is more stupid? whould we vote?
>
> That was my whole point of showing you the low usage. I take that as a
> yes, RAID 1+0 would provide a dramatic difference in speed, thanks!
the only adventage of RAID-5 is less "wasted" space than RAID-1. one and
the only adventage. write performance is terrible on small writes -
exactly what happens on database usage.
with today sizes of disks more "wasted" space doesn't make much a problem,
as i don't think your database have hundreds of gigabytes.
did you look how much disks (no matter what RAID or just devices) are
actually used?!
use systat
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