Exam SK0-005 topic 1 question 15 discussion

B, Always load servers from the bottom up. This prevents servers from becoming top-heavy and tipping also we do not alternate the direction of the airflow because that would have already been setup on the room with airflow sensors

D is the Correct Answer

A is clearly the joke answer. Data centers have cold aisles and hot aisles. Cold air blows into the cold aisle for all the devices to pull through, exhausting out to the hot aisle. Servers pull air through the front and push hot air out the back. Imagine you had two servers with alternating airflows... They'd just cycle hot air between each other! 1U spaces between servers is good if you have the space, but not essential. Putting heavy things at the top of an empty server is a recipe for disaster.

A is the correct answer, airflow is the first thing to be considered. New servers come with server rail, regardless the sizes, with the server rail and server lift, you only need to slide it out with no energy required. If you place the bigger one at the bottom and block the airflow, all the server on the rack will be overheating quickly.

It is essential to ensure to secure the rack to the floor. This prevents servers that are pulled forward on rails from overbalancing the rack and causing it to tip over. Floors must also be rated to properly support the weight of the servers, the rack, and any other IT equipment.

This question is far too vague to interpret without making a lot of assumptions, however, as a rule of thumb, one NEVER puts the heaviest object at the top of a vertical structure. Heavy objects should always be on the bottom in order of heaviest to lightest. I guess OSHA doesn't inspect data centers.

Always load servers from the bottom up

B is the answer.

@Removed and Dion79: Keyword say the BEST course of action.. D is an optional implementation, while B is a standard implementation to prevent top-heavy rack.

Server Racks can be completely full with no space to accommodate. So leaving 1U space is not always the correct answer. It seems that its pointing to Hot & Cold aisles but the question almost seems its missing something.

You don't alternate airflow. Airflow always goes front to back. UPS doesn't go at the top as it is probably the heaviest thing. Leaving 1U gap is wasteful and not required. You should install everything from the bottom upwards and ensure the rack is not top heavy. therefore correct answer is to install heaviest server at the bottom.

B or D is the right answer