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CKA study material · question 326 of 1000

An emptyDir is configured to be backed by RAM. What is the trade-off?

  1. It can be shared between Pods
  2. It is limited to 1 MiB
  3. It is faster but charges the memory to the Pod
  4. It survives node reboots
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Answer: C. It is faster but charges the memory to the Pod

A RAM-backed emptyDir is fast, but the storage it uses counts against the Pod's memory.

Source: Volumes (Kubernetes) — emptyDir memory configuration example

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