An administrator is attempting to add a volume to a volume group but it does not show up in the list of volumes available to move in, even though it does show up in the volumes pane.
In the Pure Storage Purity operating environment, a volume can only be a member of one Volume Group at a time .
When an administrator navigates to a Volume Group in the GUI and clicks to add members, the system filters the inventory and only displays volumes that are currently " unassigned " (not belonging to any Volume Group). If a volume is already residing inside another Volume Group, Purity intentionally hides it from this available list to prevent conflicting overlapping memberships. To resolve this, the administrator must first navigate to the volume ' s current Volume Group, remove the volume from that group, and then it will become available to add to the new one.
Here is why the other options are incorrect:
It is already part of a Protection Group (B): Protection Groups (pgroups) manage snapshot and replication schedules. A volume can absolutely be a standalone member of a Protection Group while simultaneously being added to a Volume Group. Being in a pgroup does not hide it from the vgroup selection list.
It is protected by SafeMode (C): SafeMode is a ransomware protection feature that prevents the manual eradication of destroyed volumes and snapshots before their retention timer expires. It does not dictate or restrict logical organizational containers like Volume Groups.
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