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
Read the original article Hit count: 223

Filed under:

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.

Related posts about freebsd8

Setting a Static IP Running FreeBSD8 in VirtualBox hosted on Windows 7

as seen on Super User - Search for 'Super User'
I'm using VirtualBox on Windows 7 (host) to run a FreeBSD (guest) based web server. I`ve assigned a static ip of 192.168.80. 1 to the (virtualized) NIC which is run in bridged mode. The problem is that when I ping an external server (such as google.com) I get a No route to host error: dimetro#… >>> More
php5.4 + freebsd8.3+nginx can't get errors

as seen on Server Fault - Search for 'Server Fault'
I have a confusing behaviour. I can't get any error into log file or screen. I made a file index.php with content like this: "<?php a();".Normally, I will get message like this: "Call to undefined function a()" but when I called this script on my configuration I got nothing. Only white screen… >>> More
Setting a Static IP Running FreeBSD8 in VirtualBox hosted on Windows 7

as seen on Super User - Search for 'Super User'
I'm using VirtualBox on Windows 7 (host) to run a FreeBSD (guest) based web server. I`ve assigned a static ip of 192.168.80. 1 to the (virtualized) NIC which is run in bridged mode. The problem is that when I ping an external server (such as google.com) I get a No route to host error: dimetro#… >>> More
Strange ZFS hidden filesystem problem

as seen on Server Fault - Search for 'Server Fault'
Half of my ZFS filesystems are hidden in ZFS-fuse. Here's my story: So, I love ZFS. I used it for about six months on FreeBSD, but due to it crashing the kernel during heavy inter-filesystem IO load, I tried switching to Solaris 5.10. That was good, but when I attempted to do an import of my Version… >>> More
FreeBSD 8.1 unstable network connection

as seen on Server Fault - Search for 'Server Fault'
I have three FreeBSD 8.1 running on three different hardware and therefore consist of different network adapter as well (bce, bge and igb). I found that the network connection is kind of unstable which I have tried to scp some 10MB file and found that I cannot always get the files completed successfully… >>> More

Developer IT