RALUS has a trivial bug which causes it to crash at startup on Linux kernel release 3.x, see for example
https://www-secure.symantec.com/connect/forums/ralus-linux-any-hope-kernel-3x-support
The bug has been known for a long time, and it is definitely a bug in RALUS, not the kernel's fault. As stated, the fix would be trivial, but Symantec chooses to ignore the problem and prefers instead to discontinue Backup Exec's "Linux support" for every distribution that updates from the old 2.6 kernel release train to a more current release. For SLES11 that happened with SP3.
The topic has been brought up many times here. This forum can neither help with that problem nor is it the place to discuss Symantec policy. Symantec support expressly refuses to discuss the topic, either. You may or may not have better luck bringing up this topic with your Symantec sales representative and stating that you consider support for non-obsolete kernel versions an essential element of Linux support.
Yes, I'm mightily p***ed off at that, too. But again, this is not the place.