Burning Sun
Специфичный юмор Эдварда Халецки (Edward L. Haletky) на 458 странице его вне всякого сомнения интересного, но также весьма специфичного пособия "VMware ESX Server In The Enterprise".
Disasters take many forms. The following list is undoubtedly not exhaustive, but it includes many different types of potential disasters.
Application failure
An application failure is the sudden death of a necessary application, which can be caused by poorly coded applications and are exploited by denial-ofservice (DoS) attacks that force an application to crash.
VM failure
A VM failure could be man-made, by nature, or both. Consider the manmade possibilities such as where a security patch needs to be applied or software is to be added to the VM. By nature could be the failure of the VM due to an OS bug, an unimplemented procedure within the virtualization layer, or an application issue that used up enough resources to cause the VM to crash. In general, VM failures are unrelated to hardware because the virtualization layer removes the hardware from the equation. But it does not remove OS bugs from the equation.
ESX Server failure
A machine failure can be man-made, by nature, or even both. For example, a man-made failure could be the planned outage to upgrade firmware, hardware, the ESX OS, or the possible occurrence of a hardware failure of some sort that causes a crash. Another example is if power is inadvertently shut off to the server.
Communication failure
A communication failure is unrelated to ESX, but will affect ESX nonetheless. Communication can be either via Fibre Channel or Ethernet. The errors could be related to a communication card, cable, switch, or a device at the non-ESX side of the communication. An example of this type of failure is a Fibre or network cable being pulled from the box or a switch is powered off or rebooted.
Rack disaster
Rack failures are extremely bad and are often caused by the rack being moved around or even toppling over. Not only will such an incident cause failures to the systems or communications, but it could cause physical injury to someone caught by the rack when it topples. Another rack failure could be the removal of power to fans of and around the whole rack, causing a massive overheat situation where all the servers in the rack fail simultaneously.
Datacenter disaster
Datacenter disasters include air conditioning failures that cause overheating, power spikes, lack of power, earthquakes, floods, fire, and anything else imaginable that could render the datacenter unavailable. An example of this type of disaster is the inadvertent triggering of a sprinkler system or a sprinkler tank bursting and flooding the datacenter below. It may seem odd, but some datacenters still use water and no other flame prevention system. Use of halon and other gasses can be dangerous to human life and therefore may not be used.
Building disaster
Like datacenter disasters, these disasters cause the building to become untenable. These include loss of power or some form of massive physical destruction. An example of this type of disaster is what happened to the World Trade Center.
Campus disaster
Campus disasters include a host of natural and man-made disasters where destruction is total. An example of this type of disaster are tornados, which will strike one place and skip others but will render anything in its path rubble.
Citywide disaster
Citywide disasters are campus disasters on a much larger scale. In some cases, the town is the campus (as is the case for larger universities). Examples range from earthquakes, to hurricanes, to atomic bombs.
Regional disaster
Regional disasters include massive power outages similar to the blackout in the New England area in the 2003 and hurricanes such as Katrina that cover well over 200 miles of coastline.
National disasters
For small countries such as Singapore or Luxembourg, a national disaster is equivalent to a citywide disaster and could equate to a regional disaster. National disasters in larger countries may be unthinkable, but it is not impossible.
Multinational disaster
Again because most countries touch other countries and there are myriad small countries all connected, this must be a consideration for planning. Tsunamis, earthquakes, and other massive natural disasters are occurring around us. Another option is a massive planned terrorist attack on a single multinational company.
World disaster
This sort of disaster is unthinkable and way out of scope!
Кто не понял, после варианта падения стойки на админа уже ересь.