Which of the following is considered an internal redundancy for a data center?
Which of the following is considered an internal redundancy for a data center?
Power distribution units (PDUs) are internal to a data center and supply power to internal components such as racks, appliances, and cooling systems. As such, they are considered an internal redundancy.
Generators are considered an external redundancy to a data center. Power distribution units (PDUs) are internal to a data center, and as such they are considered internal redundancies.
As the word "internal" is assumed to be defined as inside the data center, PDUs are located internal in the DC which are recommended to be redundantly sourced (direct powered and UPS powered).
I would say only generators provide a source of redundancy. All others would cause availability issues if they fail.
I would say only generators provide a source of redundancy. All others would cause availability issues if they fail.
D. Generators
A is the correct answer
Location: Internal redundancy duplicates components within the same facility or physical location, whereas external redundancy duplicates components across different locations or facilities. Scope of Protection: Internal redundancy protects against component-level failures within a facility, ensuring continuous operation and minimizing downtime. External redundancy protects against broader risks such as facility-level disasters or regional outages. Implementation: Internal redundancy typically involves redundant hardware or systems installed within the same data center or building. External redundancy requires duplicate infrastructure in geographically diverse locations, often involving additional costs and logistical considerations.