You can backup and restore across clusters using AWS S3 or vSAN.

To perform backup and restore across clusters, set acrossClusters to true on the source cluster, which can make the backup visible to other clusters.
apiVersion: tcx.vmware.com/v1alpha1
kind: Backup
metadata:
  name: group-backup
spec:
  acrossClusters:
    enabled: true                 # <----- HERE
  components:
    postgres:
      enabled: true
      timeout: 10m
      dbs:
        - "analyticsservice"
        - "alarmservice"
        - "collector"
        - "grafana"
        - "keycloak"
    collectors:
      enabled: true
      timeout: 10m
    configmaps:
      enabled: true
      timeout: 10m
      nameList:
        - name: "product-info"
          namespace: "default"
    elastic:
      enabled: true
      timeout: 30m
      indices: "ELASTICSEARCH_EVENTS,ELASTICSEARCH_CONFIG,ELASTICSEARCH_KAFKA_MAPPER"
    secrets:
      enabled: true
      timeout: 10m
      nameList:
        - name: "collector.tcops-postgres.credentials"
          namespace: "default"
    zookeeper:
      enabled: true
      timeout: 10m
      rootPaths:
        - "/vmware/vsa/gateway"
        - "/vmware/vsa/smarts"
        - "/omega/enrichment"
        - "/omega/kpi"
  retentionPolicy:
    numberOfDaysToKeep: 45
After the backup is successful, configure MinIO on the target cluster and use the same settings as the source cluster and perform a sync operation.
apiVersion: tcx.vmware.com/v1alpha1
kind: SyncBackup
metadata:
  name: sync-backup
Run the following command to sync the backup in the target cluster. After the sync operation is complete, you can see the status as SUCCESSFUL. The backups available in the AWS S3 or vSAN will be visible in the new cluster.
~> kubectl get syncbackup.tcx.vmware.com/sync-backup
NAME          STATUS       MESSAGE
sync-backup   SUCCESSFUL       # <---- HERE

In case of any failure, the MESSAGE field is populated with the error message.