A word of caution

In environments with a mix of persistent and non-persistent local disks, it is important to understand and use the DISK* directives very carefully.

By default on most Linux systems, device names are not guaranteed to be consistent across a reboot. One must be aware that a failed disk could cause the device ordering to come up inconsistently and potentially cause damage to subsequent local disks. One solution for persistent device names is to use udev and configure it to have strong associations between disk devices and their device names.