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Device file name /dev/sd? changes across reboots with Red Hat Enterprise Linux 6

Solution Verified - Updated 2013-06-17T18:58:14+00:00 -

Issue

On a system with multiple types of HBAs, it is possible for the device file name /dev/sd? to change across reboots.
This could be reproducible, but depends on configuration. Seems to happen often when mixing SAN storage, but could also occur on MegaRAID+SATA environments.
If /dev/sd? name is used to specify the drive, it may lead to data loss (mkfs wrong drive), or information leaks (using wrong drive in virtual machines) and other critical problems.

Environment

Red Hat Enterprise Linux 6.0
kernel-2.6.32-71.el6 or later

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