I've seen worse. In addition to most of that job description, I've seen additional requirements for concurrent experience and responsibilities for:

1. Cisco router and switch admin

2. VMWare admin

3. Windows Server admin

4. Network admin

5. Security admin

6. Exchange Server admin

...and more, all in the same job description.

These types of jobs are truly 24x7 - for you, the prospective employee. You should plan on giving up sleep or having a life. Even if they pay well, your employer will expect to own you.

I know times are hard and employers are squeezing employees for more productivity but some of the job descriptions seem to be approaching the lunatic fringe.