{
  "id": "persistent-ephemeral-storage",
  "title": "Persistent and ephemeral node storage",
  "url": "https://redis.io/docs/latest/operate/rs/7.8/installing-upgrading/install/plan-deployment/persistent-ephemeral-storage/",
  "summary": "Configure paths for persistent storage and ephemeral storage.",
  "content": "For each node in the cluster, you can configure paths for both persistent\nstorage and ephemeral storage. To do so, the volume must have full permissions for user and group `redislabs` or users:group `redislabs:redislabs`. See the [Customize system user and group]() page for instructions.\n\n\nThe persistent storage and ephemeral storage discussed in this document are not related\nto Redis persistence or AWS ephemeral drives.\n\n\n## Persistent storage\n\nPersistent storage is mandatory. The cluster uses persistent storage to store\ninformation that needs to persist if a shard or a node fails,\nsuch as server logs, configurations, and files.\n\nTo set the frequency of syncs, you can configure [persistence]()\noptions for a database.\n    \nThe persistent volume must be a storage area network (SAN)\nusing an EXT4 or XFS file system and be connected as an external storage volume.\n    \nWhen using append-only file (AOF) persistence, use flash-based storage\nfor the persistent volume.\n\n## Ephemeral storage\n\nEphemeral storage is optional. If configured, temporary information that does not need to be persisted is stored by the cluster in the ephemeral storage.\nThis improves performance and helps reduce the load on the persistent storage.\n\nEphemeral storage must be a locally attached volume on each node.\n\n## Disk size requirements\n\nFor disk size requirements, see:\n\n- [Hardware\n    requirements]()\n    for general guidelines regarding the ideal disk size for each type of\n    storage.\n- [Disk size requirements for extreme write\n    scenarios]()\n    for special considerations when dealing with a high rate of write\n    commands.\n",
  "tags": ["docs","operate","rs","kubernetes"],
  "last_updated": "2026-04-01T08:10:08-05:00"
}