How many versions are on CrashPlan? What is backing up the shared directories? I am assuming they have important files given they are shared out. Ransomeware can usually get to mapped drives?
The biggest deficiency I see is the lack of an image of the whole server nightly. But, this may be personal preference. It's kind of like what my anatomy teacher used to say, with General to Specific. My feeling is that a whole backup of the server nightly is the most significant backup. Then doing the specific backups would be great. Maybe use an external drive or two. You say worst case scenario do a bare metal restore....then restore the specific stuff. Why not have a backup from the night before. Restore to bare metal and be done. You have thought through the most important data, maybe even all of it, but with a full backup, you KNOW you have everything, and you are getting redundancy, because you are backing up the PM and the AC folder.
As it is, you have CrashPlan's software, but there is no mention of any other backup software. Win 7 Pro has its own backup software, and it isn't terrible, but it's not BackupAssist or Macrium or OO, etc.
There is also no reason you couldn't start on a Friday and back up the server to Crashplan, then do incrementals. You wouldn't be able to restore the entire backup quickly, but you would have access to every file. Hope this helps.
