How to Achieve Maximum Power Redundancy for Rack Installation
Question
A technician installs a rack in a datacenter.
The rack has two power strips installed in it.
To ensure maximum power redundancy for the rack, how should each PDU power strip be connected?
Answers
Explanations
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A. B. C. D.D.
When installing power strips in a rack, it is important to consider power redundancy, which means ensuring that power will continue to flow to the devices in the rack even if one source of power fails.
Option A, connecting each power strip to the same floor PDU, does not provide redundancy since if that PDU fails, both power strips will lose power.
Option B, connecting each power strip to different floor PDUs, provides some redundancy since if one PDU fails, the other power strip will still have power. However, if there is a power outage or failure that affects both PDUs, both power strips will lose power.
Option C, connecting each power strip to the same datacenter UPS, provides good redundancy since the UPS can continue to provide power even if one of its inputs fails. However, if the UPS itself fails, both power strips will lose power.
Option D, connecting each power strip to a different datacenter UPS, provides the best redundancy since even if one UPS fails, the other power strip will still have power from the other UPS. This option provides maximum power redundancy for the rack.
Therefore, the correct answer is D, each power strip should be connected to a different datacenter UPS to ensure maximum power redundancy for the rack.
