In fact, the BMR master server can be on any platform, Windows, Solaris, Linux, etc...
But, for the boot server, it's different. If you want to restore Windows, you need to have a Windows Boot server and if you want to restore Linux, you need to have a Linux boot server. BUT, but, but... you need to have a boot server for every linux distribution you want to restore, Redhat, Suse, etc...
Thanks for the reply back. I ended up talking with a Symantec tech and he relayed to me the same information that you stated. Can't thank everyone enough for the good advise and correct information. Thanks.