Which SnapMirror relationship type replicates all snapshots, including custom ones?

The mirror-all-snapshots policy type is designed for SnapMirror relationships where the destination volume must be an exact, block-for-block replica of the source. This includes replicating the entire history of Snapshot copies, both scheduled and manually created (custom), from the source volume to the destination. This ensures the destination has the same point-in-time recovery options as the source.

A. mirror-latest only replicates the most recent Snapshot copy, not the entire history, making it unsuitable for retaining all custom snapshots.

B. vault is used for SnapVault relationships and transfers only those snapshots that match a specific SnapMirror label defined in the policy.

D. sync refers to a synchronous replication type (SnapMirror Synchronous) that replicates data writes in real-time, not historical Snapshot copies.

1. NetApp, Inc. (2020). TR-4015: SnapMirror Configuration and Best Practices Guide for ONTAP 9.8. Section 3.1, "SnapMirror Policy Types," p. 13. "The MirrorAllSnapshots policy replicates all Snapshot copies from the source volume to the destination volume."

2. NetApp ONTAP 9 Documentation Center. (2022). Data protection using SnapMirror technology. Section: "SnapMirror policy types". "MirrorAllSnapshots: Replicates all the Snapshot copies from the source volume to the destination volume."