Usenix FCW '14 is in Philly June 17-20 and one of the tutorials is the highly rated SRE University--Practical Large System Design. It is taught by actual Google SREs. It is worth going to this conference just to take this class.
There are other sysadmin-related classes at FCW '14 this year including Hadoop Operations, Apache Cloudstack, Jenkins CI, and Hands-On Security for system administrators. Check out the full schedule.
Is there any possibility for remote sessions, or on-demand webcasts for such session, distance, and work commitments is an obstacle to attend such great content