Node Storage

Node storage (referred to as ephemeral storage in Kubernetes clusters) is built from the local storage in each host and is used for the disk volumes that back the local storage for each virtual node. Using SEDs (Self-Encrypting Drives) will ensure that any data written to node storage is encrypted on write and decrypted on read by the OS. A tenant can optionally be assigned a quota for how much storage the nodes in that tenant can consume.

Virtual nodes/containers running on public cloud VMs (such as AWS EC2) utilize storage within the instance (such as AWS Elastic Block Storage, or EBS) as node storage.