A read-create string of 1 to 63 case-sensitive characters naming the failover group, which cannot contain '?' or begin/end with a space, and cannot be changed after the group is created. Giving each failover group a human-readable name lets admins identify which service or card pair a group protects when reviewing configuration or alarms. An admin might name a group "Core-Slot1-Backup" to indicate it protects the primary card in slot 1.