What SATA drive should I install FreeBSD onto? i.e. ar0 vs da0 vs ad4/5

Posted by Matt on Server Fault See other posts from Server Fault or by Matt
Published on 2010-03-02T20:10:58Z Indexed on 2010/06/18 4:03 UTC
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freebsd8

I'm installing FreeBSD 8.0 on a server that has hardware SATA Raid.

I'm just wondering. What is the difference between these devices.

i.e. ar0, da0, ad4, ad5 I take it that ad4 & 5 are my two disks. Somehow the OS can see them individually even though it's one logical mirrored drive.

Should I be installing it onto ar0 or one of the adX disks. What is da0? it's smaller than the others. ar0 is not some kind of software raid device is it?

Just want to make sure I don't mess this up right from the get go.

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