Re: which dual-CPU hardware/OS is fastest for PostgreSQL?

>
>RAID controllers tend to use i960 or StrongARM CPUs that run at speeds
>that _aren't_ all that impressive.  With software RAID, you can take
>advantage of the _enormous_ increases in the speed of the main CPU.
>
>I don't know so much about FreeBSD's handling of this, but on Linux,
>there's pretty strong indication that _SOFTWARE_ RAID is faster than
>hardware RAID.
>
>
Unless something has changed though, you can't run raid 10
with linux software raid and raid 5 sucks for heavy writes.

J



>It has the further merit that you're not dependent on some disk
>formatting scheme that is only compatible with the model of RAID
>controller that you've got, where if the controller breaks down, you
>likely have to rebuild the whole array from scratch and your data is
>toast.
>
>The assumptions change if you're looking at really high end disk
>arrays, but that's certainly another story.
>
>


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