My server Dell R210 runs a Debian squeeze with hardware RAID1 (H200) preconfigured. But I notice that there is mdadm running. Sometimes in backup, or in OS upgrade (to Debian 6.0.4), I have messages like this:
W: mdadm: /etc/mdadm/mdadm.conf defines no arrays. W: mdadm: no arrays defined in configuration file.
Are they safe to ignore? How do I disable mdadm? Just a
/etc/init.d/mdadm stop, a bit of observation then
apt-get remove mdadm?