Hello,
there are in Precise 5.4.3 a fixed addressing like /dev/disk/by-path?
Normally, udev create this link. udev is installed out of the box, but I don't find /dev/disk/by-path. It is nice to have for cloning hard discs.
Using of /dev/disk/by-path
Yes, but /dev/sd.. is not stable. It depends from the order of connect or power on. In opposite, "by-path" has a invariant relation to the main board connector.
http://wiki.gentoo.org/wiki/Udev
http://wiki.gentoo.org/wiki/Udev