Which action should an Implementation Engineer take to confirm that all volumes connected to a host are automatically in a protection group?

On a Pure Storage FlashArray, adding a host object as a member of a protection group is the designated method to automatically protect all volumes associated with it. When a host is a member, any volume currently connected to that host, as well as any volumes connected in the future, are automatically included under the protection group's policy. This ensures that all of the host's LUNs are consistently protected by the group's snapshot and replication schedules without requiring manual intervention for each individual volume, thereby simplifying administration and preventing configuration drift.

A. Add the volumes as members of a protection group.

This is a manual, per-volume action that does not automatically include any new volumes connected to the host later.

B. Add a new volume each time it is attached to the host.

This describes a repetitive manual process, which is the opposite of the automated protection the question requires.

1. Pure Storage FlashArray Purity//FA GUI User Guide (Version 6.4.4): In the section "Protection > Protection Groups > Protection Group Details > Members Tab," the documentation states: "The Members tab lists the members of the protection group. Members can be volumes, hosts, or host groups. When a host or host group is a member of a protection group, all volumes connected to the host or host group are members of the protection group." (Page 201)

2. Pure Storage FlashArray CLI User Guide (Version 6.4.4): The purepgroup command reference describes the functionality. The description for the add subcommand under purepgroup specifies that hosts can be added as members. The underlying principle is that membership of the host confers protection to all its connected volumes. (Section: purepgroup, Page 298)

3. Pure Storage Best Practices for VMware vSphere: While specific to VMware, this document reinforces the concept. In the section on "Protection Groups," it recommends adding hosts or host groups to protection groups to ensure all associated datastores (volumes) are automatically protected, simplifying management. This demonstrates the intended use case. (Reference: Pure Storage and VMware vSphere Best Practices, TR-20042601-08, Page 35)