>
>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.
>
>
--
Command Prompt, Inc., home of Mammoth PostgreSQL - S/ODBC and S/JDBC
Postgresql support, programming shared hosting and dedicated hosting.
+1-503-667-4564 - jd@commandprompt.com - http://www.commandprompt.com
PostgreSQL Replicator -- production quality replication for PostgreSQL
