# df -alh Filesystem Size Used Avail Capacity Mounted on /dev/twed0s1a 1.9G 135M 1.7G 7% / procfs 4.0K 4.0K 0B 100% /proc /dev/twed0s1d 992M 84K 913M 0% /tmp /dev/twed0s1e 9.7G 1.7G 7.2G 19% /usr /dev/twed0s1f 7.8G 407M 6.7G 6% /var /dev/twed0s1g 50G 1.7G 44G 4% /home linprocfs 4.0K 4.0K 0B 100% /compat/
So it appears your server has a 3ware RAID card.One other example is RAID. Why should I have to know or care exactly what brand of RAID controller I have and what driver that particular RAID controller is using, just to be able to refer to the array? For example, in FreeBSD:
"/dev/aacd" is used to refer to an Adaptec RAID device,
"/dev/mlxd" or maybe /dev/mlyd for Mylex RAID,
"/dev/amrd" for AMI RAID,
"/dev/idad" for Compaq Smart RAID,
"/dev/twed" for 3ware RAID.
And after that, you need to add the other information to refer to a specific partition:
"/dev/twed1s2e" (or something like that). Now that is an intuitive and obvious name.